diff --git a/go/vt/sqlparser/ast.go b/go/vt/sqlparser/ast.go
index 83c2ab33451..1b89be79979 100644
--- a/go/vt/sqlparser/ast.go
+++ b/go/vt/sqlparser/ast.go
@@ -600,6 +600,8 @@ func (node *Set) WalkSubtree(visit Visit) error {
 // DDL represents a CREATE, ALTER, DROP, RENAME or TRUNCATE statement.
 // Table is set for AlterStr, DropStr, RenameStr, TruncateStr
 // NewName is set for AlterStr, CreateStr, RenameStr.
+// VindexSpec is set for CreateVindexStr, DropVindexStr, AddColVindexStr, DropColVindexStr
+// VindexCols is set for AddColVindexStr
 type DDL struct {
 	Action        string
 	Table         TableName
@@ -607,15 +609,23 @@ type DDL struct {
 	IfExists      bool
 	TableSpec     *TableSpec
 	PartitionSpec *PartitionSpec
+	VindexSpec    *VindexSpec
+	VindexCols    []ColIdent
 }
 
 // DDL strings.
 const (
-	CreateStr   = "create"
-	AlterStr    = "alter"
-	DropStr     = "drop"
-	RenameStr   = "rename"
-	TruncateStr = "truncate"
+	CreateStr        = "create"
+	AlterStr         = "alter"
+	DropStr          = "drop"
+	RenameStr        = "rename"
+	TruncateStr      = "truncate"
+	CreateVindexStr  = "create vindex"
+	AddColVindexStr  = "add vindex"
+	DropColVindexStr = "drop vindex"
+
+	// Vindex DDL param to specify the owner of a vindex
+	VindexOwnerStr = "owner"
 )
 
 // Format formats the node.
@@ -641,6 +651,23 @@ func (node *DDL) Format(buf *TrackedBuffer) {
 		} else {
 			buf.Myprintf("%s table %v", node.Action, node.Table)
 		}
+	case CreateVindexStr:
+		buf.Myprintf("%s %v %v", node.Action, node.VindexSpec.Name, node.VindexSpec)
+	case AddColVindexStr:
+		buf.Myprintf("alter table %v %s %v (", node.Table, node.Action, node.VindexSpec.Name)
+		for i, col := range node.VindexCols {
+			if i != 0 {
+				buf.Myprintf(", %v", col)
+			} else {
+				buf.Myprintf("%v", col)
+			}
+		}
+		buf.Myprintf(")")
+		if node.VindexSpec.Type.String() != "" {
+			buf.Myprintf(" %v", node.VindexSpec)
+		}
+	case DropColVindexStr:
+		buf.Myprintf("alter table %v %s %v", node.Table, node.Action, node.VindexSpec.Name)
 	default:
 		buf.Myprintf("%s table %v", node.Action, node.Table)
 	}
@@ -1096,6 +1123,84 @@ const (
 	colKey
 )
 
+// VindexSpec defines a vindex for a CREATE VINDEX or DROP VINDEX statement
+type VindexSpec struct {
+	Name   ColIdent
+	Type   ColIdent
+	Params []VindexParam
+}
+
+// ParseParams parses the vindex parameter list, pulling out the special-case
+// "owner" parameter
+func (node *VindexSpec) ParseParams() (string, map[string]string) {
+	var owner string
+	params := map[string]string{}
+	for _, p := range node.Params {
+		if p.Key.Lowered() == VindexOwnerStr {
+			owner = p.Val
+		} else {
+			params[p.Key.String()] = p.Val
+		}
+	}
+	return owner, params
+}
+
+// Format formats the node. The "CREATE VINDEX" preamble was formatted in
+// the containing DDL node Format, so this just prints the type, any
+// parameters, and optionally the owner
+func (node *VindexSpec) Format(buf *TrackedBuffer) {
+	buf.Myprintf("using %v", node.Type)
+
+	numParams := len(node.Params)
+	if numParams != 0 {
+		buf.Myprintf(" with ")
+		for i, p := range node.Params {
+			if i != 0 {
+				buf.Myprintf(", ")
+			}
+			buf.Myprintf("%v", p)
+		}
+	}
+}
+
+// WalkSubtree walks the nodes of the subtree.
+func (node *VindexSpec) WalkSubtree(visit Visit) error {
+	err := Walk(visit,
+		node.Name,
+	)
+
+	if err != nil {
+		return err
+	}
+
+	for _, p := range node.Params {
+		err := Walk(visit, p)
+
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// VindexParam defines a key/value parameter for a CREATE VINDEX statement
+type VindexParam struct {
+	Key ColIdent
+	Val string
+}
+
+// Format formats the node.
+func (node VindexParam) Format(buf *TrackedBuffer) {
+	buf.Myprintf("%s=%s", node.Key.String(), node.Val)
+}
+
+// WalkSubtree walks the nodes of the subtree.
+func (node VindexParam) WalkSubtree(visit Visit) error {
+	return Walk(visit,
+		node.Key,
+	)
+}
+
 // Show represents a show statement.
 type Show struct {
 	Type    string
diff --git a/go/vt/sqlparser/parse_test.go b/go/vt/sqlparser/parse_test.go
index 23201b0d75d..5f3affd7fb1 100644
--- a/go/vt/sqlparser/parse_test.go
+++ b/go/vt/sqlparser/parse_test.go
@@ -750,6 +750,85 @@ var (
 	}, {
 		input:  "alter table a partition by range (id) (partition p0 values less than (10), partition p1 values less than (maxvalue))",
 		output: "alter table a",
+	}, {
+		input:  "alter table a add column id int",
+		output: "alter table a",
+	}, {
+		input:  "alter table a add index idx (id)",
+		output: "alter table a",
+	}, {
+		input:  "alter table a add fulltext index idx (id)",
+		output: "alter table a",
+	}, {
+		input:  "alter table a add spatial index idx (id)",
+		output: "alter table a",
+	}, {
+		input:  "alter table a add foreign key",
+		output: "alter table a",
+	}, {
+		input:  "alter table a add primary key",
+		output: "alter table a",
+	}, {
+		input:  "alter table a add constraint",
+		output: "alter table a",
+	}, {
+		input:  "alter table a add id",
+		output: "alter table a",
+	}, {
+		input:  "alter table a drop column id int",
+		output: "alter table a",
+	}, {
+		input:  "alter table a drop index idx (id)",
+		output: "alter table a",
+	}, {
+		input:  "alter table a drop fulltext index idx (id)",
+		output: "alter table a",
+	}, {
+		input:  "alter table a drop spatial index idx (id)",
+		output: "alter table a",
+	}, {
+		input:  "alter table a drop foreign key",
+		output: "alter table a",
+	}, {
+		input:  "alter table a drop primary key",
+		output: "alter table a",
+	}, {
+		input:  "alter table a drop constraint",
+		output: "alter table a",
+	}, {
+		input:  "alter table a drop id",
+		output: "alter table a",
+	}, {
+		input: "alter table a add vindex hash (id)",
+	}, {
+		input:  "alter table a add vindex `hash` (`id`)",
+		output: "alter table a add vindex hash (id)",
+	}, {
+		input:  "alter table a add vindex hash (id) using `hash`",
+		output: "alter table a add vindex hash (id) using hash",
+	}, {
+		input: "alter table a add vindex `add` (`add`)",
+	}, {
+		input: "alter table a add vindex hash (id) using hash",
+	}, {
+		input:  "alter table a add vindex hash (id) using `hash`",
+		output: "alter table a add vindex hash (id) using hash",
+	}, {
+		input: "alter table user add vindex name_lookup_vdx (name) using lookup_hash with owner=user, table=name_user_idx, from=name, to=user_id",
+	}, {
+		input:  "alter table user2 add vindex name_lastname_lookup_vdx (name,lastname) using lookup with owner=`user`, table=`name_lastname_keyspace_id_map`, from=`name,lastname`, to=`keyspace_id`",
+		output: "alter table user2 add vindex name_lastname_lookup_vdx (name, lastname) using lookup with owner=user, table=name_lastname_keyspace_id_map, from=name,lastname, to=keyspace_id",
+	}, {
+		input: "alter table a drop vindex hash",
+	}, {
+		input:  "alter table a drop vindex `hash`",
+		output: "alter table a drop vindex hash",
+	}, {
+		input:  "alter table a drop vindex hash",
+		output: "alter table a drop vindex hash",
+	}, {
+		input:  "alter table a drop vindex `add`",
+		output: "alter table a drop vindex `add`",
 	}, {
 		input: "create table a",
 	}, {
@@ -766,6 +845,12 @@ var (
 	}, {
 		input:  "create table a (a int, b char, c garbage)",
 		output: "create table a",
+	}, {
+		input: "create vindex hash_vdx using hash",
+	}, {
+		input: "create vindex lookup_vdx using lookup with owner=user, table=name_user_idx, from=name, to=user_id",
+	}, {
+		input: "create vindex xyz_vdx using xyz with param1=hello, param2='world', param3=123",
 	}, {
 		input:  "create index a on b",
 		output: "alter table b",
diff --git a/go/vt/sqlparser/sql.go b/go/vt/sqlparser/sql.go
index a05d7ad9e4f..38f3cf69a57 100644
--- a/go/vt/sqlparser/sql.go
+++ b/go/vt/sqlparser/sql.go
@@ -90,6 +90,8 @@ type yySymType struct {
 	partDefs          []*PartitionDefinition
 	partDef           *PartitionDefinition
 	partSpec          *PartitionSpec
+	vindexParam       VindexParam
+	vindexParams      []VindexParam
 }
 
 const LEX_ERROR = 57346
@@ -188,109 +190,115 @@ const ALTER = 57438
 const DROP = 57439
 const RENAME = 57440
 const ANALYZE = 57441
-const TABLE = 57442
-const INDEX = 57443
-const VIEW = 57444
-const TO = 57445
-const IGNORE = 57446
-const IF = 57447
-const UNIQUE = 57448
-const PRIMARY = 57449
-const SHOW = 57450
-const DESCRIBE = 57451
-const EXPLAIN = 57452
-const DATE = 57453
-const ESCAPE = 57454
-const REPAIR = 57455
-const OPTIMIZE = 57456
-const TRUNCATE = 57457
-const MAXVALUE = 57458
-const PARTITION = 57459
-const REORGANIZE = 57460
-const LESS = 57461
-const THAN = 57462
-const PROCEDURE = 57463
-const TRIGGER = 57464
-const VINDEX = 57465
-const VINDEXES = 57466
-const STATUS = 57467
-const VARIABLES = 57468
-const BEGIN = 57469
-const START = 57470
-const TRANSACTION = 57471
-const COMMIT = 57472
-const ROLLBACK = 57473
-const BIT = 57474
-const TINYINT = 57475
-const SMALLINT = 57476
-const MEDIUMINT = 57477
-const INT = 57478
-const INTEGER = 57479
-const BIGINT = 57480
-const INTNUM = 57481
-const REAL = 57482
-const DOUBLE = 57483
-const FLOAT_TYPE = 57484
-const DECIMAL = 57485
-const NUMERIC = 57486
-const TIME = 57487
-const TIMESTAMP = 57488
-const DATETIME = 57489
-const YEAR = 57490
-const CHAR = 57491
-const VARCHAR = 57492
-const BOOL = 57493
-const CHARACTER = 57494
-const VARBINARY = 57495
-const NCHAR = 57496
-const TEXT = 57497
-const TINYTEXT = 57498
-const MEDIUMTEXT = 57499
-const LONGTEXT = 57500
-const BLOB = 57501
-const TINYBLOB = 57502
-const MEDIUMBLOB = 57503
-const LONGBLOB = 57504
-const JSON = 57505
-const ENUM = 57506
-const NULLX = 57507
-const AUTO_INCREMENT = 57508
-const APPROXNUM = 57509
-const SIGNED = 57510
-const UNSIGNED = 57511
-const ZEROFILL = 57512
-const DATABASES = 57513
-const TABLES = 57514
-const VITESS_KEYSPACES = 57515
-const VITESS_SHARDS = 57516
-const VITESS_TABLETS = 57517
-const VSCHEMA_TABLES = 57518
-const NAMES = 57519
-const CHARSET = 57520
-const GLOBAL = 57521
-const SESSION = 57522
-const CURRENT_TIMESTAMP = 57523
-const DATABASE = 57524
-const CURRENT_DATE = 57525
-const CURRENT_TIME = 57526
-const LOCALTIME = 57527
-const LOCALTIMESTAMP = 57528
-const UTC_DATE = 57529
-const UTC_TIME = 57530
-const UTC_TIMESTAMP = 57531
-const REPLACE = 57532
-const CONVERT = 57533
-const CAST = 57534
-const GROUP_CONCAT = 57535
-const SEPARATOR = 57536
-const MATCH = 57537
-const AGAINST = 57538
-const BOOLEAN = 57539
-const LANGUAGE = 57540
-const WITH = 57541
-const QUERY = 57542
-const EXPANSION = 57543
-const UNUSED = 57544
+const ADD = 57442
+const TABLE = 57443
+const INDEX = 57444
+const VIEW = 57445
+const TO = 57446
+const IGNORE = 57447
+const IF = 57448
+const UNIQUE = 57449
+const PRIMARY = 57450
+const COLUMN = 57451
+const CONSTRAINT = 57452
+const SPATIAL = 57453
+const FULLTEXT = 57454
+const FOREIGN = 57455
+const SHOW = 57456
+const DESCRIBE = 57457
+const EXPLAIN = 57458
+const DATE = 57459
+const ESCAPE = 57460
+const REPAIR = 57461
+const OPTIMIZE = 57462
+const TRUNCATE = 57463
+const MAXVALUE = 57464
+const PARTITION = 57465
+const REORGANIZE = 57466
+const LESS = 57467
+const THAN = 57468
+const PROCEDURE = 57469
+const TRIGGER = 57470
+const VINDEX = 57471
+const VINDEXES = 57472
+const STATUS = 57473
+const VARIABLES = 57474
+const BEGIN = 57475
+const START = 57476
+const TRANSACTION = 57477
+const COMMIT = 57478
+const ROLLBACK = 57479
+const BIT = 57480
+const TINYINT = 57481
+const SMALLINT = 57482
+const MEDIUMINT = 57483
+const INT = 57484
+const INTEGER = 57485
+const BIGINT = 57486
+const INTNUM = 57487
+const REAL = 57488
+const DOUBLE = 57489
+const FLOAT_TYPE = 57490
+const DECIMAL = 57491
+const NUMERIC = 57492
+const TIME = 57493
+const TIMESTAMP = 57494
+const DATETIME = 57495
+const YEAR = 57496
+const CHAR = 57497
+const VARCHAR = 57498
+const BOOL = 57499
+const CHARACTER = 57500
+const VARBINARY = 57501
+const NCHAR = 57502
+const TEXT = 57503
+const TINYTEXT = 57504
+const MEDIUMTEXT = 57505
+const LONGTEXT = 57506
+const BLOB = 57507
+const TINYBLOB = 57508
+const MEDIUMBLOB = 57509
+const LONGBLOB = 57510
+const JSON = 57511
+const ENUM = 57512
+const NULLX = 57513
+const AUTO_INCREMENT = 57514
+const APPROXNUM = 57515
+const SIGNED = 57516
+const UNSIGNED = 57517
+const ZEROFILL = 57518
+const DATABASES = 57519
+const TABLES = 57520
+const VITESS_KEYSPACES = 57521
+const VITESS_SHARDS = 57522
+const VITESS_TABLETS = 57523
+const VSCHEMA_TABLES = 57524
+const NAMES = 57525
+const CHARSET = 57526
+const GLOBAL = 57527
+const SESSION = 57528
+const CURRENT_TIMESTAMP = 57529
+const DATABASE = 57530
+const CURRENT_DATE = 57531
+const CURRENT_TIME = 57532
+const LOCALTIME = 57533
+const LOCALTIMESTAMP = 57534
+const UTC_DATE = 57535
+const UTC_TIME = 57536
+const UTC_TIMESTAMP = 57537
+const REPLACE = 57538
+const CONVERT = 57539
+const CAST = 57540
+const GROUP_CONCAT = 57541
+const SEPARATOR = 57542
+const MATCH = 57543
+const AGAINST = 57544
+const BOOLEAN = 57545
+const LANGUAGE = 57546
+const WITH = 57547
+const QUERY = 57548
+const EXPANSION = 57549
+const UNUSED = 57550
 
 var yyToknames = [...]string{
 	"$end",
@@ -409,6 +417,7 @@ var yyToknames = [...]string{
 	"DROP",
 	"RENAME",
 	"ANALYZE",
+	"ADD",
 	"TABLE",
 	"INDEX",
 	"VIEW",
@@ -417,6 +426,11 @@ var yyToknames = [...]string{
 	"IF",
 	"UNIQUE",
 	"PRIMARY",
+	"COLUMN",
+	"CONSTRAINT",
+	"SPATIAL",
+	"FULLTEXT",
+	"FOREIGN",
 	"SHOW",
 	"DESCRIBE",
 	"EXPLAIN",
@@ -528,913 +542,960 @@ var yyExca = [...]int{
 	-1, 3,
 	5, 27,
 	-2, 4,
-	-1, 211,
-	109, 505,
-	-2, 501,
-	-1, 212,
-	109, 506,
-	-2, 502,
-	-1, 279,
-	80, 643,
-	109, 643,
+	-1, 215,
+	109, 526,
+	-2, 522,
+	-1, 216,
+	109, 527,
+	-2, 523,
+	-1, 283,
+	80, 667,
+	109, 667,
 	-2, 52,
-	-1, 280,
-	80, 616,
-	109, 616,
+	-1, 284,
+	80, 640,
+	109, 640,
 	-2, 53,
-	-1, 281,
-	80, 605,
-	109, 605,
+	-1, 285,
+	80, 627,
+	109, 627,
 	-2, 47,
-	-1, 283,
-	80, 630,
-	109, 630,
+	-1, 287,
+	80, 654,
+	109, 654,
 	-2, 49,
-	-1, 643,
-	109, 508,
-	-2, 504,
-	-1, 822,
+	-1, 651,
+	109, 529,
+	-2, 525,
+	-1, 835,
 	5, 28,
-	-2, 329,
-	-1, 842,
+	-2, 351,
+	-1, 855,
 	5, 27,
-	-2, 452,
-	-1, 1006,
-	5, 28,
-	-2, 453,
+	-2, 474,
 	-1, 1041,
+	5, 28,
+	-2, 475,
+	-1, 1079,
 	5, 27,
-	-2, 455,
-	-1, 1086,
+	-2, 477,
+	-1, 1126,
 	5, 28,
-	-2, 456,
+	-2, 478,
 }
 
 const yyPrivate = 57344
 
-const yyLast = 8482
+const yyLast = 8945
 
 var yyAct = [...]int{
 
-	242, 47, 1077, 936, 484, 958, 717, 216, 275, 772,
-	756, 315, 733, 241, 190, 937, 933, 483, 3, 750,
-	769, 732, 184, 1012, 529, 218, 527, 859, 845, 880,
-	678, 814, 915, 848, 742, 53, 668, 675, 417, 423,
-	765, 645, 531, 278, 698, 288, 317, 690, 47, 214,
-	730, 266, 437, 52, 265, 1103, 195, 429, 199, 1094,
-	516, 496, 270, 1101, 1084, 189, 185, 186, 187, 188,
-	1099, 284, 1093, 928, 1000, 292, 1083, 308, 1057, 876,
-	23, 24, 48, 26, 27, 749, 1024, 269, 264, 1034,
-	203, 757, 963, 964, 965, 995, 993, 183, 1100, 42,
-	1098, 966, 1078, 57, 28, 1065, 450, 449, 459, 460,
-	452, 453, 454, 455, 456, 457, 458, 451, 900, 298,
-	461, 409, 410, 37, 699, 718, 720, 50, 59, 60,
-	61, 62, 63, 299, 294, 151, 744, 152, 310, 152,
-	312, 1055, 594, 415, 450, 449, 459, 460, 452, 453,
-	454, 455, 456, 457, 458, 451, 589, 858, 461, 309,
-	311, 154, 155, 156, 870, 857, 856, 785, 314, 314,
-	314, 314, 212, 314, 314, 290, 295, 163, 153, 1070,
-	314, 783, 815, 972, 744, 881, 30, 31, 33, 32,
-	35, 1009, 897, 473, 474, 863, 47, 719, 899, 36,
-	43, 44, 757, 73, 45, 46, 34, 161, 789, 808,
-	161, 470, 289, 426, 472, 617, 547, 782, 38, 39,
-	307, 40, 41, 441, 303, 451, 743, 461, 461, 425,
-	614, 1066, 967, 973, 161, 161, 1056, 1054, 436, 471,
-	161, 482, 1082, 486, 487, 488, 489, 490, 491, 492,
-	930, 495, 497, 497, 497, 497, 497, 497, 497, 497,
-	505, 506, 507, 508, 546, 779, 784, 777, 691, 691,
-	832, 528, 591, 1073, 743, 209, 301, 434, 874, 741,
-	740, 49, 435, 434, 284, 541, 787, 790, 898, 543,
-	896, 431, 314, 436, 677, 50, 269, 314, 746, 436,
-	427, 916, 1028, 747, 150, 648, 314, 314, 314, 314,
-	314, 314, 314, 314, 498, 499, 500, 501, 502, 503,
-	504, 781, 1027, 918, 161, 889, 161, 435, 434, 888,
-	161, 805, 806, 807, 932, 780, 161, 877, 1088, 240,
-	73, 73, 73, 73, 436, 73, 73, 416, 652, 669,
-	601, 670, 73, 1037, 599, 920, 1026, 924, 971, 919,
-	786, 917, 650, 651, 649, 263, 922, 635, 637, 638,
-	71, 788, 636, 887, 960, 921, 1090, 416, 73, 871,
-	923, 925, 671, 450, 449, 459, 460, 452, 453, 454,
-	455, 456, 457, 458, 451, 1045, 416, 461, 1045, 1046,
-	827, 1021, 1020, 285, 445, 587, 448, 953, 416, 416,
-	314, 314, 462, 463, 464, 465, 466, 467, 468, 305,
-	446, 447, 444, 450, 449, 459, 460, 452, 453, 454,
-	455, 456, 457, 458, 451, 300, 161, 461, 1008, 416,
-	622, 978, 977, 161, 161, 161, 975, 974, 435, 434,
-	73, 820, 416, 642, 513, 416, 680, 416, 646, 620,
-	621, 549, 548, 205, 73, 436, 161, 289, 161, 73,
-	647, 161, 21, 47, 161, 1059, 161, 1058, 73, 73,
-	73, 73, 73, 73, 73, 73, 624, 486, 643, 538,
-	934, 639, 641, 540, 54, 475, 476, 477, 478, 479,
-	480, 481, 968, 512, 682, 435, 434, 316, 316, 316,
-	316, 23, 316, 316, 270, 270, 270, 270, 270, 316,
-	284, 701, 436, 672, 673, 540, 680, 513, 194, 528,
-	539, 721, 537, 820, 1004, 840, 513, 270, 841, 269,
-	269, 269, 269, 269, 695, 439, 682, 905, 284, 976,
-	688, 864, 820, 23, 269, 618, 846, 196, 50, 729,
-	734, 616, 269, 724, 846, 727, 703, 704, 702, 706,
-	623, 705, 758, 759, 760, 722, 752, 753, 754, 755,
-	723, 50, 73, 73, 726, 714, 161, 751, 23, 773,
-	820, 762, 763, 764, 643, 737, 962, 615, 513, 314,
-	50, 73, 770, 947, 50, 161, 540, 771, 867, 849,
-	850, 73, 766, 435, 434, 1040, 285, 316, 454, 455,
-	456, 457, 458, 451, 767, 768, 461, 679, 681, 642,
-	436, 316, 761, 65, 934, 50, 316, 890, 852, 597,
-	413, 693, 630, 809, 855, 316, 316, 316, 316, 316,
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+	0, 0, 86, 0, 121, 114, 139, 0, 115, 120,
+	103, 131, 117, 138, 166, 145, 129, 144, 76, 128,
+	137, 85, 122, 78, 135, 126, 107, 97, 98, 77,
+	0, 119, 89, 93, 88, 112, 132, 133, 87, 151,
+	81, 143, 80, 82, 142, 111, 130, 136, 108, 105,
+	79, 134, 106, 104, 99, 91, 276, 0, 0, 125,
+	140, 152, 0, 113, 146, 147, 148, 149, 110, 83,
+	96, 123, 90, 0, 0, 0, 0, 100, 0, 102,
+	0, 0, 124, 109, 0, 0, 0, 75, 0, 101,
+	150, 118, 92, 141, 0, 0, 0, 0, 0, 0,
+	0, 163, 0, 0, 0, 0, 0, 0, 0, 0,
+	84, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	162, 0, 0, 0, 0, 113, 0, 0, 0, 85,
-	0, 118, 111, 135, 0, 112, 117, 100, 127, 114,
-	134, 141, 142, 125, 140, 75, 124, 133, 84, 119,
-	77, 131, 123, 104, 94, 95, 76, 0, 116, 88,
-	92, 87, 109, 128, 129, 86, 148, 80, 139, 79,
-	81, 138, 108, 126, 132, 105, 102, 78, 130, 103,
-	101, 96, 90, 0, 0, 0, 122, 136, 149, 0,
-	110, 143, 144, 145, 146, 107, 82, 93, 120, 89,
-	0, 0, 0, 0, 97, 0, 99, 0, 0, 121,
-	106, 0, 0, 0, 74, 0, 98, 147, 115, 91,
-	137, 0, 0, 0, 0, 0, 0, 0, 72, 0,
-	440, 0, 0, 0, 0, 0, 0, 83, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 165, 0, 0, 0, 0,
+	116, 0, 0, 127, 95, 94, 0, 0, 0, 86,
+	0, 121, 114, 139, 0, 115, 120, 103, 131, 117,
+	138, 166, 145, 129, 144, 76, 128, 137, 85, 122,
+	78, 135, 126, 107, 97, 98, 77, 0, 119, 89,
+	93, 88, 112, 132, 133, 87, 151, 81, 143, 80,
+	82, 142, 111, 130, 136, 108, 105, 79, 134, 106,
+	104, 99, 91, 0, 0, 0, 125, 140, 152, 0,
+	113, 146, 147, 148, 149, 110, 83, 96, 123, 90,
+	0, 0, 0, 0, 100, 0, 102, 0, 0, 124,
+	109, 0, 0, 0, 75, 0, 101, 150, 118, 92,
+	141, 0, 0, 0, 0, 0, 0, 0, 163, 0,
+	0, 0, 0, 0, 0, 0, 0, 84, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 162, 0, 0, 0, 0, 113, 0, 0, 0,
-	85, 0, 118, 111, 135, 0, 112, 117, 100, 127,
-	114, 134, 141, 142, 125, 140, 75, 124, 133, 84,
-	119, 77, 131, 123, 104, 94, 95, 76, 0, 116,
-	88, 92, 87, 109, 128, 129, 86, 148, 80, 139,
-	79, 81, 138, 108, 126, 132, 105, 102, 78, 130,
-	103, 101, 96, 90, 0, 0, 0, 122, 136, 149,
-	0, 0, 143, 144, 145, 146, 107, 82, 93, 120,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 110, 74, 0, 98, 147, 115,
-	91, 137, 510, 89, 0, 0, 0, 0, 97, 0,
-	99, 0, 0, 121, 106, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 160, 0, 0, 0, 0, 0, 0, 0,
-	0, 83, 0, 0, 0, 0, 0, 0, 0, 0,
+	160, 0, 165, 0, 0, 0, 0, 116, 0, 0,
+	127, 95, 94, 0, 0, 0, 86, 0, 121, 114,
+	139, 0, 115, 120, 103, 131, 117, 138, 166, 145,
+	129, 144, 76, 128, 137, 85, 122, 78, 135, 126,
+	107, 97, 98, 77, 0, 119, 89, 93, 88, 112,
+	132, 133, 87, 151, 81, 143, 80, 82, 142, 111,
+	130, 136, 108, 105, 79, 134, 106, 104, 99, 91,
+	0, 0, 0, 125, 140, 152, 0, 113, 146, 147,
+	148, 149, 110, 83, 96, 123, 90, 0, 0, 0,
+	0, 100, 0, 102, 0, 0, 124, 109, 0, 0,
+	0, 75, 0, 101, 150, 118, 92, 141, 0, 0,
+	0, 0, 0, 0, 0, 73, 0, 0, 0, 0,
+	0, 0, 0, 0, 84, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 162, 0, 0, 0, 0,
-	113, 0, 0, 0, 85, 0, 118, 111, 135, 0,
-	112, 117, 100, 127, 114, 134, 141, 142, 125, 140,
-	75, 124, 133, 84, 119, 77, 131, 123, 104, 94,
-	95, 76, 0, 116, 88, 92, 87, 109, 128, 129,
-	86, 148, 80, 139, 79, 81, 138, 108, 126, 132,
-	105, 102, 78, 130, 103, 101, 96, 90, 272, 0,
-	0, 122, 136, 149, 0, 110, 143, 144, 145, 146,
-	107, 82, 93, 120, 89, 0, 0, 0, 0, 97,
-	0, 99, 0, 0, 121, 106, 0, 0, 0, 74,
-	0, 98, 147, 115, 91, 137, 0, 0, 0, 0,
-	0, 0, 0, 160, 0, 0, 0, 0, 0, 0,
-	0, 0, 83, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 165,
+	0, 0, 0, 0, 116, 0, 0, 127, 95, 94,
+	0, 0, 0, 86, 0, 121, 114, 139, 0, 115,
+	120, 103, 131, 117, 138, 166, 145, 129, 144, 76,
+	128, 137, 85, 122, 78, 135, 126, 107, 97, 98,
+	77, 0, 119, 89, 93, 88, 112, 132, 133, 87,
+	151, 81, 143, 80, 82, 142, 111, 130, 136, 108,
+	105, 79, 134, 106, 104, 99, 91, 0, 0, 0,
+	125, 140, 152, 0, 113, 146, 147, 148, 149, 110,
+	83, 96, 123, 90, 0, 0, 0, 0, 100, 0,
+	102, 0, 0, 124, 109, 0, 0, 0, 75, 0,
+	101, 150, 118, 92, 141, 0, 0, 0, 0, 0,
+	0, 0, 215, 0, 0, 0, 0, 0, 0, 0,
+	0, 84, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 162, 0, 0, 0,
-	0, 113, 0, 0, 0, 85, 0, 118, 111, 135,
-	0, 112, 117, 100, 127, 114, 134, 141, 142, 125,
-	140, 75, 124, 133, 84, 119, 77, 131, 123, 104,
-	94, 95, 76, 0, 116, 88, 92, 87, 109, 128,
-	129, 86, 148, 80, 139, 79, 81, 138, 108, 126,
-	132, 105, 102, 78, 130, 103, 101, 96, 90, 0,
-	0, 0, 122, 136, 149, 0, 110, 143, 144, 145,
-	146, 107, 82, 93, 120, 89, 0, 0, 0, 0,
-	97, 0, 99, 0, 0, 121, 106, 0, 0, 0,
-	74, 0, 98, 147, 115, 91, 137, 0, 0, 0,
-	0, 0, 0, 0, 160, 0, 0, 0, 0, 0,
-	0, 0, 0, 83, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 165, 0, 0, 0,
+	0, 116, 0, 0, 127, 95, 94, 0, 0, 0,
+	86, 0, 121, 114, 139, 0, 115, 120, 103, 131,
+	117, 138, 166, 145, 129, 144, 76, 128, 137, 85,
+	122, 78, 135, 126, 107, 97, 98, 77, 0, 119,
+	89, 93, 88, 112, 132, 133, 87, 151, 81, 143,
+	80, 82, 142, 111, 130, 136, 108, 105, 79, 134,
+	106, 104, 99, 91, 0, 0, 0, 125, 140, 152,
+	0, 113, 146, 147, 148, 149, 110, 83, 96, 123,
+	90, 0, 0, 0, 0, 100, 0, 102, 0, 0,
+	124, 109, 0, 0, 0, 75, 0, 101, 150, 118,
+	92, 141, 0, 0, 0, 0, 0, 0, 0, 163,
+	0, 0, 0, 0, 0, 0, 0, 0, 84, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 157, 0, 162, 0, 0,
-	0, 0, 113, 0, 0, 0, 85, 0, 118, 111,
-	135, 0, 112, 117, 100, 127, 114, 134, 141, 142,
-	125, 140, 75, 124, 133, 84, 119, 77, 131, 123,
-	104, 94, 95, 76, 0, 116, 88, 92, 87, 109,
-	128, 129, 86, 148, 80, 139, 79, 81, 138, 108,
-	126, 132, 105, 102, 78, 130, 103, 101, 96, 90,
-	0, 0, 0, 122, 136, 149, 0, 110, 143, 144,
-	145, 146, 107, 82, 93, 120, 89, 0, 0, 0,
-	0, 97, 0, 99, 0, 0, 121, 106, 0, 0,
-	0, 74, 0, 98, 147, 115, 91, 137, 0, 0,
-	0, 0, 0, 0, 0, 72, 0, 0, 0, 0,
-	0, 0, 0, 0, 83, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 165, 0, 0, 0, 0, 116, 0,
+	0, 127, 95, 94, 0, 0, 0, 86, 0, 121,
+	114, 139, 0, 115, 120, 103, 131, 117, 138, 166,
+	145, 129, 144, 76, 128, 137, 85, 122, 78, 135,
+	126, 107, 97, 98, 77, 0, 119, 89, 93, 88,
+	112, 132, 133, 87, 151, 81, 143, 80, 82, 142,
+	111, 130, 136, 108, 105, 79, 134, 106, 104, 99,
+	91, 0, 0, 0, 125, 140, 152, 0, 113, 146,
+	147, 148, 149, 110, 83, 96, 123, 90, 0, 0,
+	0, 0, 100, 0, 102, 0, 0, 124, 109, 0,
+	0, 0, 75, 0, 101, 150, 118, 92, 141, 0,
+	0, 0, 0, 0, 0, 0, 215, 0, 0, 0,
+	0, 0, 0, 0, 0, 84, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 162, 0,
-	0, 0, 0, 113, 0, 0, 0, 85, 0, 118,
-	111, 135, 0, 112, 117, 100, 127, 114, 134, 141,
-	142, 125, 140, 75, 124, 133, 84, 119, 77, 131,
-	123, 104, 94, 95, 76, 0, 116, 88, 92, 87,
-	109, 128, 129, 86, 148, 80, 139, 79, 81, 138,
-	108, 126, 132, 105, 102, 78, 130, 103, 101, 96,
-	90, 0, 0, 0, 122, 136, 149, 0, 110, 143,
-	144, 145, 146, 107, 82, 93, 120, 89, 0, 0,
-	0, 0, 97, 0, 99, 0, 0, 121, 106, 0,
-	0, 0, 74, 0, 98, 147, 115, 91, 137, 0,
-	0, 0, 0, 0, 0, 0, 211, 0, 0, 0,
-	0, 0, 0, 0, 0, 83, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	165, 0, 0, 0, 0, 116, 0, 0, 127, 95,
+	94, 0, 0, 0, 86, 0, 121, 114, 139, 0,
+	115, 120, 103, 131, 117, 138, 166, 145, 129, 144,
+	76, 128, 137, 85, 122, 78, 135, 126, 107, 97,
+	98, 77, 0, 119, 89, 93, 88, 112, 132, 133,
+	87, 151, 81, 143, 80, 286, 142, 111, 130, 136,
+	108, 105, 79, 134, 106, 104, 99, 91, 0, 0,
+	0, 125, 140, 152, 0, 0, 146, 147, 148, 149,
+	287, 285, 284, 283, 0, 0, 0, 23, 24, 48,
+	26, 27, 0, 0, 0, 0, 0, 0, 0, 75,
+	0, 101, 150, 118, 92, 141, 42, 0, 0, 0,
+	0, 28, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	37, 0, 0, 0, 50, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 162,
-	0, 0, 0, 0, 113, 0, 0, 0, 85, 0,
-	118, 111, 135, 0, 112, 117, 100, 127, 114, 134,
-	141, 142, 125, 140, 75, 124, 133, 84, 119, 77,
-	131, 123, 104, 94, 95, 76, 0, 116, 88, 92,
-	87, 109, 128, 129, 86, 148, 80, 139, 79, 81,
-	138, 108, 126, 132, 105, 102, 78, 130, 103, 101,
-	96, 90, 0, 0, 0, 122, 136, 149, 0, 110,
-	143, 144, 145, 146, 107, 82, 93, 120, 89, 0,
-	0, 0, 0, 97, 0, 99, 0, 0, 121, 106,
-	0, 0, 0, 74, 0, 98, 147, 115, 91, 137,
-	0, 0, 0, 0, 0, 0, 0, 160, 0, 0,
-	0, 0, 0, 0, 0, 0, 83, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 30, 31, 33, 32, 35, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	162, 0, 0, 0, 0, 113, 0, 0, 0, 85,
-	0, 118, 111, 135, 0, 112, 117, 100, 127, 114,
-	134, 141, 142, 125, 140, 75, 124, 133, 84, 119,
-	77, 131, 123, 104, 94, 95, 76, 0, 116, 88,
-	92, 87, 109, 128, 129, 86, 148, 80, 139, 79,
-	81, 138, 108, 126, 132, 105, 102, 78, 130, 103,
-	101, 96, 90, 0, 0, 0, 122, 136, 149, 0,
-	110, 143, 144, 145, 146, 107, 82, 93, 120, 89,
-	0, 0, 0, 0, 97, 0, 99, 0, 0, 121,
-	106, 0, 0, 0, 74, 0, 98, 147, 115, 91,
-	137, 0, 0, 0, 0, 0, 0, 0, 211, 0,
-	0, 0, 0, 0, 0, 0, 0, 83, 0, 0,
+	0, 0, 36, 43, 44, 0, 0, 45, 46, 34,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 38, 39, 0, 40, 41, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 162, 0, 0, 0, 0, 113, 0, 0, 0,
-	85, 0, 118, 111, 135, 0, 112, 117, 100, 127,
-	114, 134, 141, 142, 125, 140, 75, 124, 133, 84,
-	119, 77, 131, 123, 104, 94, 95, 76, 0, 116,
-	88, 92, 87, 109, 128, 129, 86, 148, 80, 139,
-	79, 282, 138, 108, 126, 132, 105, 102, 78, 130,
-	103, 101, 96, 90, 0, 0, 0, 122, 136, 149,
-	0, 0, 143, 144, 145, 146, 283, 281, 280, 279,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 74, 0, 98, 147, 115,
-	91, 137,
+	0, 0, 0, 0, 49,
 }
 var yyPact = [...]int{
 
-	74, -1000, -167, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	8731, -1000, -172, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, 736, 779, -1000, -1000, -1000, -1000, -1000, -1000, 580,
-	5568, 16, 61, 44, 7578, 60, 1000, 8091, -1000, -49,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, 547, -1000, -1000,
-	-1000, -1000, -1000, 730, 739, 551, 721, 627, -1000, 4402,
-	18, 6700, 7407, 8262, -1000, 411, 57, 8091, -132, 12,
+	-1000, 664, 696, -1000, -1000, -1000, -1000, -1000, -1000, 492,
+	5746, 9, 34, 22, 7822, 33, 1356, 8353, -1000, -46,
+	-1000, -1000, -1000, -1000, -1000, -1000, -1000, 475, -1000, -1000,
+	-1000, -1000, -1000, 643, 658, 494, 642, 569, -1000, 4544,
+	6, 6914, 7645, 8530, -1000, 319, 30, 8353, -126, 7999,
+	3, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
@@ -1442,24 +1503,24 @@ var yyPact = [...]int{
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, 32, 8353, -1000, 8353, -2, 300, -2,
+	8353, -1000, 58, -1000, -1000, -1000, -1000, 8353, 297, 603,
+	35, 2594, 2594, 2594, 2594, -30, 2594, 2594, 525, -1000,
+	-1000, -1000, -1000, 2594, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, 265, 609, 4963, 4963, 664, -1000, 475,
+	-1000, -1000, -1000, 596, -1000, -1000, 174, 679, -1000, 5569,
+	57, -1000, 4963, 1661, 448, -1000, -1000, 448, -1000, -1000,
+	46, -1000, -1000, 5361, 5361, 5361, 5361, 5361, 5361, 5361,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	59, 8091, -1000, 8091, 11, 379, 11, 8091, -1000, 115,
-	-1000, -1000, -1000, 8091, 363, 674, 21, 2506, 2506, 2506,
-	2506, -21, 2506, 2506, 589, -1000, -1000, -1000, -1000, 2506,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, 354,
-	677, 4809, 4809, 736, -1000, 547, -1000, -1000, -1000, 672,
-	-1000, -1000, 227, 763, -1000, 5397, 114, -1000, 4809, 332,
-	528, -1000, -1000, 528, -1000, -1000, 83, -1000, -1000, 5195,
-	5195, 5195, 5195, 5195, 5195, 5195, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, 448, -1000, 4755, 448, 448, 448,
+	448, 448, 448, 4963, 448, 448, 448, 448, 448, 448,
+	448, 448, 448, 448, 448, 448, 448, 7468, 486, 624,
+	-1000, -1000, -1000, 635, 6352, 6737, 8353, 409, -1000, 269,
+	8176, 3257, -1000, -1000, -1000, -1000, 602, -1000, 124, -1000,
+	56, 403, -1000, 227, 294, 2594, 23, 487, 8353, 141,
+	8353, 2594, 15, 8353, 633, 523, 8353, -1000, 3920, -1000,
+	2594, 2594, 2594, 2594, 2594, 2594, 2594, 2594, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	528, -1000, 4607, 528, 528, 528, 528, 528, 528, 4809,
-	528, 528, 528, 528, 528, 528, 528, 528, 528, 528,
-	528, 528, 528, 7236, 473, 826, -1000, -1000, -1000, 718,
-	6156, 6529, 8091, 478, -1000, 471, 7920, 3151, -1000, -1000,
-	-1000, -1000, 673, -1000, 184, -1000, 107, 407, -1000, 1437,
-	349, 2506, 37, 8091, 200, 8091, 2506, 22, 8091, 715,
-	588, 8091, -1000, 3796, -1000, 2506, 2506, 2506, 2506, 2506,
-	2506, 2506, 2506, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
@@ -1468,151 +1529,157 @@ var yyPact = [...]int{
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, 2506,
-	2506, -1000, -1000, 8091, -1000, -1000, -1000, -1000, 771, 140,
-	543, 106, 501, -1000, 435, 730, 354, 627, 6327, 600,
-	-1000, -1000, 8091, -1000, 4809, 4809, 300, -1000, 7042, -1000,
-	-1000, 2936, 151, 5195, 242, 274, 5195, 5195, 5195, 5195,
-	5195, 5195, 5195, 5195, 5195, 5195, 5195, 5195, 5195, 5195,
-	5195, 293, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	326, -1000, 547, 699, 699, 122, 122, 122, 122, 122,
-	122, 1818, 3998, 354, 402, 212, 4607, 4402, 4402, 4809,
-	4809, 4402, 722, 193, 212, 7749, -1000, 354, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, 4402, 4402, 4402, 4402, -10,
-	8091, -1000, 7920, 6700, 6700, 6700, 6700, 6700, -1000, 618,
-	616, -1000, 628, 624, 641, 8091, -1000, 400, 6156, 76,
-	528, -1000, 6871, -1000, -1000, -10, 6700, 8091, -1000, -1000,
-	7920, 471, -1000, -1000, -1000, -1000, 4809, 3581, 2291, 156,
-	231, -101, -1000, -1000, 534, -1000, 534, 534, 534, 534,
-	-78, -78, -78, -78, -1000, -1000, -1000, -1000, -1000, 579,
-	-1000, 534, 534, 534, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, 559, 559, 559, 549, 549, 537, -1000, 8091,
-	-1000, 697, 152, -1000, 8091, -1000, -1000, 8091, 2506, -1000,
+	-1000, -1000, -1000, -1000, -1000, 2594, 2594, -1000, -1000, 8353,
+	-1000, -1000, -1000, -1000, 691, 86, 267, 55, 444, -1000,
+	270, 643, 265, 569, 6529, 544, -1000, -1000, 8353, -1000,
+	4963, 4963, 231, -1000, 7268, -1000, -1000, 3036, 83, 5361,
+	220, 109, 5361, 5361, 5361, 5361, 5361, 5361, 5361, 5361,
+	5361, 5361, 5361, 5361, 5361, 5361, 5361, 214, -1000, -1000,
+	-1000, -1000, -1000, -1000, -1000, -1000, 291, -1000, 475, 588,
+	588, 64, 64, 64, 64, 64, 64, 1791, 4128, 265,
+	401, 120, 4755, 4544, 4544, 4963, 4963, 4544, 637, 110,
+	120, 7999, -1000, 265, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, 4544, 4544, 4544, 4544, -18, 8353, -1000, 8176, 6914,
+	6914, 6914, 6914, 6914, -1000, 559, 553, -1000, 549, 539,
+	560, 8353, -1000, 397, 6352, 88, 448, -1000, 7091, -1000,
+	-1000, -18, 6914, 8353, -1000, -1000, 8176, 269, -1000, -1000,
+	-1000, -1000, 4963, 3699, 2373, 102, 170, -100, -1000, -1000,
+	464, -1000, 464, 464, 464, 464, -79, -79, -79, -79,
+	-1000, -1000, -1000, -1000, -1000, 491, -1000, 464, 464, 464,
+	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, 483, 483,
+	483, 474, 474, 498, -1000, 8353, -156, 286, -1000, 630,
+	79, -1000, 8353, -1000, -1000, 8353, 2594, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, 643, 4809, 4809, 3581, 4809, -1000,
-	-1000, -1000, 677, -1000, 722, 735, -1000, 661, 659, 4402,
-	-1000, -1000, 151, 206, -1000, -1000, 264, -1000, -1000, -1000,
-	-1000, 100, 528, -1000, 1328, -1000, -1000, -1000, -1000, 242,
-	5195, 5195, 5195, 53, 1328, 1238, 897, 712, 122, 521,
-	521, 123, 123, 123, 123, 123, 815, 815, -1000, -1000,
-	-1000, 354, -1000, -1000, -1000, 354, 4402, 498, -1000, -1000,
-	4809, -1000, 354, 397, 397, 608, 378, 397, 4402, 192,
-	-1000, 4809, 354, -1000, 397, 354, 397, 397, 505, 528,
-	-1000, 552, 826, 558, 587, 1120, -1000, -1000, -1000, -1000,
-	612, -1000, 603, -1000, -1000, -1000, -1000, -1000, 48, 47,
-	39, 7749, -1000, 761, 544, -1000, -1000, -1000, 212, -1000,
-	86, 497, 2076, -1000, -1000, -1000, -1000, -1000, -1000, 555,
-	689, 108, 323, -1000, -1000, 682, -1000, 211, -108, -1000,
-	-1000, 278, -78, -78, -1000, -1000, 80, 667, 80, 80,
-	80, 315, -1000, -1000, -1000, -1000, 270, -1000, -1000, -1000,
-	266, -1000, 586, 7749, 2506, -1000, -1000, 170, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-16, -1000, 2506, -1000, 639, 212, 212, -1000, -1000, 8091,
-	-1000, -1000, -1000, -1000, 536, -1000, -1000, -1000, 2721, 4402,
-	-1000, 53, 1328, 1206, -1000, 5195, 5195, -1000, -1000, 397,
-	4402, 212, -1000, -1000, -1000, 195, 293, 195, -140, 479,
-	171, -1000, 4809, 257, -1000, -1000, -1000, -1000, -1000, 583,
-	7920, 528, -1000, 5963, 7749, 736, 4809, -1000, -1000, 4809,
-	550, -1000, 4809, -1000, -1000, -1000, 528, 528, 528, 353,
-	-1000, 736, -1000, 3366, 2291, -1000, 2291, 7749, -1000, 318,
-	-1000, -1000, 545, 34, -1000, -1000, -1000, 447, 80, 80,
-	-1000, 302, 127, -1000, -1000, -1000, 392, -1000, 495, 387,
-	8091, -1000, -1000, -1000, 8091, -1000, -1000, -1000, -1000, -1000,
-	7749, -1000, -1000, -1000, 761, 6700, -1000, -1000, 354, -1000,
-	5195, 1328, 1328, -1000, -1000, 354, 534, 534, -1000, 534,
-	549, -1000, 534, -58, 534, -59, 354, 354, 528, -137,
-	-1000, 212, 4809, -1000, 675, 439, 480, -1000, -1000, 4200,
-	354, 384, 82, 353, 730, 212, 212, 7749, 212, 7749,
-	7749, 7749, 5770, 7749, 730, 2076, -1000, 347, -1000, 534,
-	-1000, -97, 770, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, 298, 263, -1000, 243, 2506,
-	-1000, -1000, 692, 759, 482, -1000, 1328, -1000, -1000, 33,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, 5195, 354,
-	295, 212, 687, -1000, 528, -1000, -1000, 582, 7749, 7749,
-	-1000, -1000, 344, -1000, 341, 341, 341, 76, -1000, -1000,
-	537, 7749, -1000, 113, -1000, -120, -1000, 422, 420, -1000,
-	528, 755, 732, -1000, -1000, 15, -1000, -1000, 768, -1000,
-	528, -1000, 547, 70, -1000, 7749, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, 208, 686, -1000, 684, -1000, -1000, -1000,
-	-32, -1000, 4809, 4809, 354, 28, -153, 7920, 480, 354,
-	7749, -1000, -1000, 280, -1000, -1000, 322, -1000, 7749, 212,
-	472, -1000, 638, -143, -159, 471, -1000, -1000, -1000, -1000,
-	-32, 648, -1000, 635, -1000, -1000, -36, -146, -39, -154,
-	528, -163, 5002, -1000, 292, 354, -1000, -1000,
+	-1000, -1000, 578, 4963, 4963, 3699, 4963, -1000, -1000, -1000,
+	609, -1000, 637, 678, -1000, 587, 586, 4544, -1000, -1000,
+	83, 130, -1000, -1000, 262, -1000, -1000, -1000, -1000, 52,
+	448, -1000, 1481, -1000, -1000, -1000, -1000, 220, 5361, 5361,
+	5361, 1177, 1481, 1444, 461, 1503, 64, 179, 179, 80,
+	80, 80, 80, 80, 1092, 1092, -1000, -1000, -1000, 265,
+	-1000, -1000, -1000, 265, 4544, 440, -1000, -1000, 4963, -1000,
+	265, 389, 389, 238, 264, 389, 4544, 136, -1000, 4963,
+	265, -1000, 389, 265, 389, 389, 485, 448, -1000, 478,
+	624, 490, 521, 881, -1000, -1000, -1000, -1000, 552, -1000,
+	551, -1000, -1000, -1000, -1000, -1000, 28, 27, 26, 7999,
+	-1000, 674, 465, -1000, -1000, -1000, 120, -1000, 51, 415,
+	2152, -1000, -1000, -1000, -1000, -1000, -1000, 480, 614, 106,
+	280, -1000, -1000, 605, -1000, 162, -103, -1000, -1000, 242,
+	-79, -79, -1000, -1000, 63, 597, 63, 63, 63, 252,
+	-1000, -1000, -1000, -1000, 232, -1000, -1000, -1000, 187, -1000,
+	519, 7999, 2594, -1000, 3478, -1000, -1000, -1000, -1000, 781,
+	296, 111, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -20, -1000, 2594, -1000, 576, 120, 120,
+	-1000, -1000, 8353, -1000, -1000, -1000, -1000, 460, -1000, -1000,
+	-1000, 2815, 4544, -1000, 1177, 1481, 1250, -1000, 5361, 5361,
+	-1000, -1000, 389, 4544, 120, -1000, -1000, -1000, 268, 214,
+	268, -150, 420, 129, -1000, 4963, 118, -1000, -1000, -1000,
+	-1000, -1000, 513, 8176, 448, -1000, 6153, 7999, 664, 4963,
+	-1000, -1000, 4963, 476, -1000, 4963, -1000, -1000, -1000, 448,
+	448, 448, 364, -1000, 664, -1000, 3478, 2373, -1000, 2373,
+	7999, -1000, 271, -1000, -1000, 500, 65, -1000, -1000, -1000,
+	349, 63, 63, -1000, 266, 125, -1000, -1000, -1000, 377,
+	-1000, 414, 375, 8353, -1000, -1000, 412, -1000, 107, -1000,
+	-1000, 7999, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, 7999, 8353, -1000, -1000, -1000, -1000, -1000, 7999,
+	-1000, -1000, -1000, 674, 6914, -1000, -1000, 265, -1000, 5361,
+	1481, 1481, -1000, -1000, 265, 464, 464, -1000, 464, 474,
+	-1000, 464, -55, 464, -56, 265, 265, 448, -132, -1000,
+	120, 4963, -1000, 610, 411, 383, -1000, -1000, 4336, 265,
+	373, 50, 364, 643, 120, 120, 7999, 120, 7999, 7999,
+	7999, 5954, 7999, 643, 2152, -1000, 325, -1000, 464, -1000,
+	-96, 690, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, 249, 184, -1000, 176, 2594, 3478,
+	2373, -1000, 449, -1000, -1000, -1000, -1000, 617, 672, 410,
+	-1000, 1481, -1000, -1000, 47, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, 5361, 265, 248, 120, 613, -1000, 448,
+	-1000, -1000, 443, 7999, 7999, -1000, -1000, 323, -1000, 310,
+	310, 310, 88, -1000, -1000, 498, 7999, -1000, 99, -1000,
+	-115, -1000, 346, 334, -1000, -1000, -1000, 7999, 448, 670,
+	654, -1000, -1000, -19, -1000, -1000, 689, -1000, 448, -1000,
+	475, 45, -1000, 7999, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, 171, 607, -1000, 598, -1000, -1000, -1000, 308, -28,
+	-1000, 4963, 4963, 265, 54, -159, 8176, 383, 265, 7999,
+	-1000, -1000, 239, -1000, -1000, 487, 304, -1000, 7999, 120,
+	379, -1000, 575, -154, -163, 269, -1000, -1000, -1000, -156,
+	-1000, -28, 585, -1000, 567, -1000, -1000, -1000, -33, -157,
+	-36, -160, 448, -164, 5162, -1000, 1206, 265, -1000, -1000,
 }
 var yyPgo = [...]int{
 
-	0, 1046, 17, 472, 1045, 1042, 1038, 1035, 1034, 1033,
-	1029, 1028, 1026, 1023, 1022, 1021, 1012, 1009, 1007, 1006,
-	1004, 1001, 988, 987, 103, 985, 984, 982, 57, 978,
-	58, 976, 970, 31, 294, 37, 30, 463, 966, 26,
-	54, 51, 964, 33, 962, 961, 958, 956, 60, 955,
-	949, 1283, 948, 945, 6, 28, 943, 940, 935, 934,
-	49, 275, 930, 925, 923, 922, 921, 919, 41, 4,
-	3, 13, 15, 907, 25, 7, 904, 47, 903, 902,
-	901, 900, 35, 896, 39, 895, 14, 38, 893, 23,
-	44, 27, 16, 8, 892, 43, 891, 304, 890, 119,
-	889, 885, 884, 883, 882, 46, 172, 339, 11, 52,
-	877, 866, 9, 951, 50, 42, 24, 864, 22, 960,
-	36, 862, 856, 32, 854, 853, 850, 846, 845, 837,
-	19, 834, 833, 832, 10, 29, 830, 829, 40, 20,
-	825, 824, 823, 822, 45, 818, 34, 816, 801, 798,
-	21, 12, 797, 5, 796, 795, 2, 794, 792, 791,
-	0, 143, 787, 785, 61,
+	0, 945, 11, 441, 944, 940, 939, 937, 936, 934,
+	931, 930, 921, 918, 915, 914, 913, 902, 898, 888,
+	887, 886, 885, 884, 88, 883, 882, 880, 49, 878,
+	58, 877, 876, 31, 731, 36, 35, 770, 874, 22,
+	55, 47, 864, 41, 863, 862, 858, 850, 46, 848,
+	847, 1221, 846, 845, 13, 29, 843, 838, 836, 835,
+	50, 282, 834, 833, 831, 830, 829, 827, 38, 5,
+	8, 44, 15, 826, 101, 6, 825, 52, 824, 822,
+	813, 812, 30, 811, 34, 810, 18, 33, 808, 9,
+	40, 21, 20, 7, 807, 42, 804, 244, 803, 111,
+	802, 801, 800, 798, 797, 57, 171, 503, 583, 68,
+	788, 786, 14, 1172, 51, 45, 17, 776, 53, 579,
+	27, 775, 773, 25, 772, 771, 769, 768, 766, 765,
+	216, 760, 758, 751, 28, 24, 734, 733, 39, 19,
+	730, 729, 728, 727, 43, 725, 37, 724, 723, 722,
+	26, 23, 721, 10, 720, 719, 2, 717, 16, 716,
+	3, 712, 4, 32, 711, 709, 0, 148, 705, 704,
+	110,
 }
 var yyR1 = [...]int{
 
-	0, 158, 159, 159, 1, 1, 1, 1, 1, 1,
+	0, 164, 165, 165, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 2, 2, 2, 6, 3, 4, 4, 5,
-	5, 7, 7, 27, 27, 8, 9, 9, 162, 162,
+	5, 7, 7, 27, 27, 8, 9, 9, 168, 168,
 	46, 46, 90, 90, 10, 10, 10, 94, 94, 94,
-	111, 111, 121, 121, 11, 11, 11, 11, 16, 147,
-	148, 148, 148, 144, 124, 124, 124, 127, 127, 125,
-	125, 125, 125, 125, 125, 125, 126, 126, 126, 126,
-	126, 128, 128, 128, 128, 128, 129, 129, 129, 129,
-	129, 129, 129, 129, 129, 129, 129, 129, 129, 129,
-	143, 143, 130, 130, 138, 138, 139, 139, 139, 136,
-	136, 137, 137, 140, 140, 140, 131, 131, 131, 131,
-	131, 131, 133, 133, 141, 141, 134, 134, 134, 135,
-	135, 142, 142, 142, 142, 142, 132, 132, 145, 152,
-	152, 152, 152, 146, 146, 154, 154, 153, 149, 149,
-	149, 150, 150, 150, 151, 151, 151, 12, 12, 12,
-	12, 12, 157, 155, 155, 156, 156, 13, 14, 14,
-	14, 15, 15, 17, 18, 18, 18, 18, 18, 18,
+	111, 111, 121, 121, 11, 11, 11, 11, 11, 162,
+	162, 161, 160, 160, 159, 159, 158, 16, 147, 148,
+	148, 148, 144, 124, 124, 124, 127, 127, 125, 125,
+	125, 125, 125, 125, 125, 126, 126, 126, 126, 126,
+	128, 128, 128, 128, 128, 129, 129, 129, 129, 129,
+	129, 129, 129, 129, 129, 129, 129, 129, 129, 143,
+	143, 130, 130, 138, 138, 139, 139, 139, 136, 136,
+	137, 137, 140, 140, 140, 131, 131, 131, 131, 131,
+	131, 133, 133, 141, 141, 134, 134, 134, 135, 135,
+	142, 142, 142, 142, 142, 132, 132, 145, 152, 152,
+	152, 152, 146, 146, 154, 154, 153, 149, 149, 149,
+	150, 150, 150, 151, 151, 151, 12, 12, 12, 12,
+	12, 12, 12, 12, 12, 163, 163, 163, 163, 163,
+	163, 163, 163, 163, 157, 155, 155, 156, 156, 13,
+	14, 14, 14, 15, 15, 17, 18, 18, 18, 18,
 	18, 18, 18, 18, 18, 18, 18, 18, 18, 18,
-	18, 18, 18, 18, 18, 18, 18, 122, 122, 122,
-	19, 19, 21, 21, 22, 23, 20, 20, 20, 20,
-	20, 163, 24, 25, 25, 26, 26, 26, 30, 30,
-	30, 28, 28, 29, 29, 35, 35, 34, 34, 36,
-	36, 36, 36, 110, 110, 110, 109, 109, 38, 38,
-	39, 39, 40, 40, 41, 41, 41, 53, 53, 89,
-	89, 91, 91, 42, 42, 42, 42, 43, 43, 44,
-	44, 45, 45, 117, 117, 116, 116, 116, 115, 115,
-	47, 47, 47, 49, 48, 48, 48, 48, 50, 50,
-	52, 52, 51, 51, 54, 54, 54, 54, 55, 55,
-	37, 37, 37, 37, 37, 37, 37, 98, 98, 57,
-	57, 56, 56, 56, 56, 56, 56, 56, 56, 56,
-	56, 67, 67, 67, 67, 67, 67, 58, 58, 58,
-	58, 58, 58, 58, 33, 33, 68, 68, 68, 74,
-	69, 69, 61, 61, 61, 61, 61, 61, 61, 61,
+	18, 18, 18, 18, 18, 18, 18, 18, 18, 122,
+	122, 122, 19, 19, 21, 21, 22, 23, 20, 20,
+	20, 20, 20, 169, 24, 25, 25, 26, 26, 26,
+	30, 30, 30, 28, 28, 29, 29, 35, 35, 34,
+	34, 36, 36, 36, 36, 110, 110, 110, 109, 109,
+	38, 38, 39, 39, 40, 40, 41, 41, 41, 53,
+	53, 89, 89, 91, 91, 42, 42, 42, 42, 43,
+	43, 44, 44, 45, 45, 117, 117, 116, 116, 116,
+	115, 115, 47, 47, 47, 49, 48, 48, 48, 48,
+	50, 50, 52, 52, 51, 51, 54, 54, 54, 54,
+	55, 55, 37, 37, 37, 37, 37, 37, 37, 98,
+	98, 57, 57, 56, 56, 56, 56, 56, 56, 56,
+	56, 56, 56, 67, 67, 67, 67, 67, 67, 58,
+	58, 58, 58, 58, 58, 58, 33, 33, 68, 68,
+	68, 74, 69, 69, 61, 61, 61, 61, 61, 61,
 	61, 61, 61, 61, 61, 61, 61, 61, 61, 61,
 	61, 61, 61, 61, 61, 61, 61, 61, 61, 61,
-	61, 61, 61, 65, 65, 65, 63, 63, 63, 63,
-	63, 63, 63, 63, 63, 64, 64, 64, 64, 64,
-	64, 64, 64, 164, 164, 66, 66, 66, 66, 31,
-	31, 31, 31, 31, 120, 120, 123, 123, 123, 123,
-	123, 123, 123, 123, 123, 123, 123, 123, 123, 78,
-	78, 32, 32, 76, 76, 77, 79, 79, 75, 75,
-	75, 60, 60, 60, 60, 60, 60, 60, 60, 62,
-	62, 62, 80, 80, 81, 81, 82, 82, 83, 83,
-	84, 85, 85, 85, 86, 86, 86, 86, 87, 87,
-	87, 59, 59, 59, 59, 59, 59, 88, 88, 88,
-	88, 92, 92, 70, 70, 72, 72, 71, 73, 93,
-	93, 95, 96, 96, 99, 99, 100, 100, 97, 97,
-	101, 101, 101, 101, 101, 101, 101, 101, 101, 101,
-	101, 102, 102, 102, 103, 103, 104, 104, 104, 112,
-	112, 107, 107, 108, 108, 113, 113, 114, 114, 105,
+	61, 61, 61, 61, 61, 65, 65, 65, 63, 63,
+	63, 63, 63, 63, 63, 63, 63, 64, 64, 64,
+	64, 64, 64, 64, 64, 170, 170, 66, 66, 66,
+	66, 31, 31, 31, 31, 31, 120, 120, 123, 123,
+	123, 123, 123, 123, 123, 123, 123, 123, 123, 123,
+	123, 78, 78, 32, 32, 76, 76, 77, 79, 79,
+	75, 75, 75, 60, 60, 60, 60, 60, 60, 60,
+	60, 62, 62, 62, 80, 80, 81, 81, 82, 82,
+	83, 83, 84, 85, 85, 85, 86, 86, 86, 86,
+	87, 87, 87, 59, 59, 59, 59, 59, 59, 88,
+	88, 88, 88, 92, 92, 70, 70, 72, 72, 71,
+	73, 93, 93, 95, 96, 96, 99, 99, 100, 100,
+	97, 97, 101, 101, 101, 101, 101, 101, 101, 101,
+	101, 101, 102, 102, 102, 103, 103, 104, 104, 104,
+	112, 112, 107, 107, 108, 108, 113, 113, 114, 114,
 	105, 105, 105, 105, 105, 105, 105, 105, 105, 105,
 	105, 105, 105, 105, 105, 105, 105, 105, 105, 105,
 	105, 105, 105, 105, 105, 105, 105, 105, 105, 105,
@@ -1621,7 +1688,7 @@ var yyR1 = [...]int{
 	105, 105, 105, 105, 105, 105, 105, 105, 105, 105,
 	105, 105, 105, 105, 105, 105, 105, 105, 105, 105,
 	105, 105, 105, 105, 105, 105, 105, 105, 105, 105,
-	105, 105, 105, 105, 105, 105, 105, 106, 106, 106,
+	105, 105, 105, 105, 105, 105, 105, 105, 105, 106,
 	106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
 	106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
 	106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
@@ -1629,7 +1696,8 @@ var yyR1 = [...]int{
 	106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
 	106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
 	106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
-	106, 106, 106, 106, 160, 161, 118, 119, 119, 119,
+	106, 106, 106, 106, 106, 106, 106, 106, 106, 166,
+	167, 118, 119, 119, 119,
 }
 var yyR2 = [...]int{
 
@@ -1638,52 +1706,55 @@ var yyR2 = [...]int{
 	1, 1, 4, 6, 7, 5, 10, 1, 3, 1,
 	3, 7, 8, 1, 1, 8, 8, 6, 1, 1,
 	1, 3, 0, 4, 3, 4, 5, 1, 2, 1,
-	1, 1, 1, 1, 2, 8, 4, 6, 4, 4,
-	1, 3, 3, 8, 3, 1, 1, 2, 1, 1,
-	1, 1, 1, 1, 1, 1, 2, 2, 2, 2,
-	2, 1, 2, 2, 2, 1, 4, 4, 2, 2,
-	3, 3, 3, 3, 1, 1, 1, 1, 1, 4,
-	1, 3, 0, 3, 0, 5, 0, 3, 5, 0,
-	1, 0, 1, 0, 1, 2, 0, 2, 2, 2,
-	2, 2, 0, 3, 0, 1, 0, 3, 3, 0,
-	2, 0, 2, 1, 2, 1, 0, 2, 5, 2,
-	3, 2, 2, 1, 1, 1, 3, 2, 0, 1,
-	3, 1, 2, 3, 1, 1, 1, 6, 7, 7,
-	4, 5, 7, 1, 3, 8, 8, 5, 4, 6,
-	5, 3, 2, 3, 4, 4, 4, 4, 4, 4,
-	4, 4, 3, 3, 3, 3, 4, 3, 3, 4,
-	2, 4, 2, 2, 2, 2, 3, 0, 1, 1,
-	2, 1, 1, 2, 1, 1, 2, 2, 2, 2,
-	2, 0, 2, 0, 2, 1, 2, 2, 0, 1,
-	1, 0, 1, 0, 1, 0, 1, 1, 3, 1,
-	2, 3, 5, 0, 1, 2, 1, 1, 0, 2,
-	1, 3, 1, 1, 1, 3, 3, 3, 7, 1,
-	3, 1, 3, 4, 4, 4, 3, 2, 4, 0,
-	1, 0, 2, 0, 1, 0, 1, 2, 1, 1,
-	1, 2, 2, 1, 2, 3, 2, 3, 2, 2,
-	2, 1, 1, 3, 0, 5, 5, 5, 0, 2,
-	1, 3, 3, 2, 3, 1, 2, 0, 3, 1,
-	1, 3, 3, 4, 4, 5, 3, 4, 5, 6,
-	2, 1, 2, 1, 2, 1, 2, 1, 1, 1,
-	1, 1, 1, 1, 0, 2, 1, 1, 1, 3,
-	1, 3, 1, 1, 1, 1, 1, 3, 3, 3,
+	1, 1, 1, 1, 2, 8, 4, 6, 5, 0,
+	2, 1, 0, 2, 1, 3, 3, 4, 4, 1,
+	3, 3, 8, 3, 1, 1, 2, 1, 1, 1,
+	1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
+	1, 2, 2, 2, 1, 4, 4, 2, 2, 3,
+	3, 3, 3, 1, 1, 1, 1, 1, 4, 1,
+	3, 0, 3, 0, 5, 0, 3, 5, 0, 1,
+	0, 1, 0, 1, 2, 0, 2, 2, 2, 2,
+	2, 0, 3, 0, 1, 0, 3, 3, 0, 2,
+	0, 2, 1, 2, 1, 0, 2, 5, 2, 3,
+	2, 2, 1, 1, 1, 3, 2, 0, 1, 3,
+	1, 2, 3, 1, 1, 1, 6, 7, 7, 12,
+	7, 7, 7, 4, 5, 1, 1, 1, 1, 1,
+	1, 1, 1, 1, 7, 1, 3, 8, 8, 5,
+	4, 6, 5, 3, 2, 3, 4, 4, 4, 4,
+	4, 4, 4, 4, 3, 3, 3, 3, 4, 3,
+	3, 4, 2, 4, 2, 2, 2, 2, 3, 0,
+	1, 1, 2, 1, 1, 2, 1, 1, 2, 2,
+	2, 2, 2, 0, 2, 0, 2, 1, 2, 2,
+	0, 1, 1, 0, 1, 0, 1, 0, 1, 1,
+	3, 1, 2, 3, 5, 0, 1, 2, 1, 1,
+	0, 2, 1, 3, 1, 1, 1, 3, 3, 3,
+	7, 1, 3, 1, 3, 4, 4, 4, 3, 2,
+	4, 0, 1, 0, 2, 0, 1, 0, 1, 2,
+	1, 1, 1, 2, 2, 1, 2, 3, 2, 3,
+	2, 2, 2, 1, 1, 3, 0, 5, 5, 5,
+	0, 2, 1, 3, 3, 2, 3, 1, 2, 0,
+	3, 1, 1, 3, 3, 4, 4, 5, 3, 4,
+	5, 6, 2, 1, 2, 1, 2, 1, 2, 1,
+	1, 1, 1, 1, 1, 1, 0, 2, 1, 1,
+	1, 3, 1, 3, 1, 1, 1, 1, 1, 3,
 	3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-	3, 3, 2, 2, 2, 2, 2, 2, 3, 1,
-	1, 1, 1, 4, 5, 6, 4, 4, 6, 6,
-	6, 9, 7, 5, 4, 2, 2, 2, 2, 2,
-	2, 2, 2, 0, 2, 4, 4, 4, 4, 0,
-	3, 4, 7, 3, 1, 1, 2, 3, 3, 1,
-	2, 2, 1, 2, 1, 2, 2, 1, 2, 0,
-	1, 0, 2, 1, 2, 4, 0, 2, 1, 3,
-	5, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-	2, 2, 0, 3, 0, 2, 0, 3, 1, 3,
-	2, 0, 1, 1, 0, 2, 4, 4, 0, 2,
-	4, 2, 1, 3, 5, 4, 6, 1, 3, 3,
-	5, 0, 5, 1, 3, 1, 2, 3, 1, 1,
-	3, 3, 1, 1, 0, 2, 0, 3, 0, 1,
+	3, 3, 3, 3, 2, 2, 2, 2, 2, 2,
+	3, 1, 1, 1, 1, 4, 5, 6, 4, 4,
+	6, 6, 6, 9, 7, 5, 4, 2, 2, 2,
+	2, 2, 2, 2, 2, 0, 2, 4, 4, 4,
+	4, 0, 3, 4, 7, 3, 1, 1, 2, 3,
+	3, 1, 2, 2, 1, 2, 1, 2, 2, 1,
+	2, 0, 1, 0, 2, 1, 2, 4, 0, 2,
+	1, 3, 5, 1, 1, 1, 1, 1, 1, 1,
+	1, 1, 2, 2, 0, 3, 0, 2, 0, 3,
+	1, 3, 2, 0, 1, 1, 0, 2, 4, 4,
+	0, 2, 4, 2, 1, 3, 5, 4, 6, 1,
+	3, 3, 5, 0, 5, 1, 3, 1, 2, 3,
+	1, 1, 3, 3, 1, 1, 0, 2, 0, 3,
+	0, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+	1, 1, 0, 1, 1, 1, 1, 0, 1, 1,
+	0, 2, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-	1, 0, 1, 1, 1, 1, 0, 1, 1, 0,
-	2, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
@@ -1700,235 +1771,243 @@ var yyR2 = [...]int{
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-	1, 1, 1, 1, 1, 1, 0, 0, 1, 1,
+	1, 0, 0, 1, 1,
 }
 var yyChk = [...]int{
 
-	-1000, -158, -1, -2, -6, -7, -8, -9, -10, -11,
+	-1000, -164, -1, -2, -6, -7, -8, -9, -10, -11,
 	-12, -13, -14, -15, -17, -18, -19, -21, -22, -23,
 	-20, -3, -4, 6, 7, -27, 9, 10, 30, -16,
-	112, 113, 115, 114, 132, 116, 125, 49, 144, 145,
-	147, 148, 25, 126, 127, 130, 131, -160, 8, 207,
-	53, -159, 220, -82, 15, -26, 5, -24, -163, -24,
-	-24, -24, -24, -24, -147, 53, -104, 119, 70, 117,
-	123, -107, 56, -106, 213, 144, 155, 149, 176, 168,
-	166, 169, 195, 65, 147, 128, 164, 160, 158, 27,
-	181, 218, 159, 196, 153, 154, 180, 32, 215, 34,
-	136, 179, 175, 178, 152, 174, 38, 194, 171, 161,
-	18, 131, 134, 124, 138, 217, 157, 135, 130, 148,
-	197, 37, 185, 151, 145, 142, 172, 137, 162, 163,
-	177, 150, 173, 146, 139, 132, 186, 219, 170, 167,
-	143, 140, 141, 190, 191, 192, 193, 216, 165, 187,
-	-97, 119, 121, 117, 117, 118, 119, 117, -51, -113,
-	56, -106, 119, 117, 106, 169, 112, 188, 118, 32,
-	138, -122, 117, 189, 141, 190, 191, 192, 193, 56,
-	197, 196, -113, 146, -118, -118, -118, -118, -118, -2,
-	-86, 17, 16, -5, -3, -160, 6, 20, 21, -30,
-	39, 40, -25, -36, 97, -37, -113, -56, 72, -61,
-	29, 56, -106, 23, -60, -57, -75, -73, -74, 106,
-	107, 95, 96, 103, 73, 108, -65, -63, -64, -66,
-	58, 57, 66, 59, 60, 61, 62, 67, 68, 69,
-	-107, -71, -160, 43, 44, 208, 209, 212, 210, 75,
-	33, 198, 206, 205, 204, 202, 203, 200, 201, 122,
-	199, 101, 207, -97, -39, -40, -41, -42, -53, -74,
-	-160, -51, 11, -46, -51, -93, -121, -94, -95, 197,
-	196, 195, 169, 194, -75, -107, -113, -148, -144, 56,
-	118, -51, 207, -100, 122, 117, -51, -51, -99, 122,
-	56, -99, -51, 109, -51, 56, 30, 199, 56, 138,
-	117, 139, 119, -119, -160, -108, -107, -105, 71, 22,
-	24, 183, 74, 106, 16, 75, 105, 208, 112, 47,
-	200, 201, 198, 199, 188, 29, 10, 25, 126, 21,
-	99, 114, 78, 79, 129, 23, 127, 69, 19, 50,
-	11, 13, 14, 122, 121, 90, 118, 45, 8, 108,
-	26, 87, 41, 28, 43, 88, 17, 202, 203, 31,
-	212, 133, 101, 48, 35, 72, 67, 51, 70, 15,
-	46, 89, 115, 207, 44, 6, 211, 30, 125, 42,
-	117, 189, 77, 120, 68, 5, 123, 9, 49, 52,
-	204, 205, 206, 33, 76, 12, -119, -119, -119, 142,
-	143, -119, -119, 51, -119, -161, 55, -87, 19, 31,
-	-37, -113, -83, -84, -37, -82, -2, -24, 35, -28,
-	21, 64, 11, -110, 71, 70, 87, -109, 22, -107,
-	58, 109, -37, -58, 90, 72, 88, 89, 74, 92,
-	91, 102, 95, 96, 97, 98, 99, 100, 101, 93,
-	94, 105, 80, 81, 82, 83, 84, 85, 86, -98,
-	-160, -74, -160, 110, 111, -61, -61, -61, -61, -61,
-	-61, -61, -160, -2, -69, -37, -160, -160, -160, -160,
-	-160, -160, -160, -78, -37, -160, -164, -160, -164, -164,
-	-164, -164, -164, -164, -164, -160, -160, -160, -160, -52,
-	26, -51, 30, 54, -47, -49, -48, -50, 41, 45,
-	47, 42, 43, 44, 48, -117, 22, -39, -160, -116,
-	134, -115, 22, -113, 58, -51, -162, 54, 11, 52,
-	54, -93, -111, -108, 58, 30, 80, 109, 55, 54,
-	-124, -127, -129, -128, -125, -126, 166, 167, 106, 170,
-	172, 173, 174, 175, 176, 177, 178, 179, 180, 181,
-	128, 162, 163, 164, 165, 149, 150, 151, 152, 153,
-	154, 155, 157, 158, 159, 160, 161, 56, -119, 119,
-	-51, 72, -51, -119, 120, -51, 23, 51, -51, -114,
-	-113, -105, -119, -119, -119, -119, -119, -119, -119, -119,
-	-119, -119, -51, 9, 90, 54, 18, 109, 54, -85,
-	24, 25, -86, -161, -30, -62, -107, 59, 62, -29,
-	42, -51, -37, -37, -67, 67, 72, 68, 69, -109,
-	97, -114, -108, -105, -61, -68, -71, -74, 63, 90,
-	88, 89, 74, -61, -61, -61, -61, -61, -61, -61,
-	-61, -61, -61, -61, -61, -61, -61, -61, -120, 56,
-	58, 56, -60, -60, -107, -35, 21, -34, -36, -161,
-	54, -161, -2, -34, -34, -37, -37, -34, -28, -76,
-	-77, 76, -107, -161, -34, -35, -34, -34, -90, 134,
-	-51, -93, -40, -41, -41, -40, -41, 41, 41, 41,
-	46, 41, 46, 41, -48, -113, -161, -54, 49, 121,
-	50, -160, -115, -90, -39, -51, -95, -118, -37, -108,
-	-114, -149, -150, -151, -108, 58, 59, -144, -145, -152,
-	124, 123, -146, 118, 28, -140, 67, 72, -136, 186,
-	-130, 53, -130, -130, -130, -130, -134, 169, -134, -134,
-	-134, 53, -130, -130, -130, -138, 53, -138, -138, -139,
-	53, -139, -112, 52, -51, 23, -101, 115, -157, 113,
-	183, 169, 65, 29, 114, 15, 208, 134, 219, 56,
-	135, -51, -51, -119, 37, -37, -37, -84, -87, -96,
-	19, 11, 33, 33, -34, 67, 68, 69, 109, -160,
-	-68, -61, -61, -61, -33, 129, 71, -161, -161, -34,
-	54, -37, -161, -161, -161, 54, 52, 22, -161, -34,
-	-79, -77, 78, -37, -161, -161, -161, -161, -161, -59,
-	30, 33, -2, -160, -160, -55, 12, -44, -43, 51,
-	52, -45, 51, -43, 41, 41, 118, 118, 118, -91,
-	-107, -55, -55, 109, 54, -151, 80, 53, 28, -146,
-	56, 56, -131, 29, 67, -137, 187, 59, -134, -134,
-	-135, 105, 30, -135, -135, -135, -143, 58, 59, 59,
-	51, -107, -119, -118, -102, -103, 120, 22, 118, 28,
-	134, -119, 38, -51, -38, 11, 97, -108, -35, -33,
-	71, -61, -61, -161, -36, -123, 106, 166, 128, 164,
-	160, 180, 171, 185, 162, 186, -120, -123, 213, -82,
-	79, -37, 77, -92, 51, -93, -70, -72, -71, -160,
-	-2, -88, -107, -91, -82, -37, -37, 53, -37, -160,
-	-160, -160, -161, 54, -82, -150, -151, -154, -153, -107,
-	56, -133, 51, 58, 59, 60, 67, 198, 55, -135,
-	-135, 56, 56, 106, 55, 54, 54, 55, 54, -51,
-	-51, -118, -107, -55, -39, -161, -61, -161, -130, -130,
-	-130, -139, -130, 154, -130, 154, -161, -161, -160, -32,
-	211, -37, 27, -92, 54, -161, -161, -161, 54, 109,
-	-161, -86, -89, -107, -89, -89, -89, -116, -107, -86,
-	55, 54, -130, -141, 183, 9, 58, 59, 59, -119,
-	26, -80, 13, -134, 56, -61, -161, 58, 28, -72,
-	33, -2, -160, -107, -107, 54, 55, -161, -161, -161,
-	-54, -112, -153, -142, 124, 28, 123, 198, 55, 55,
-	-160, -81, 14, 16, -31, 90, 216, 9, -70, -2,
-	109, -107, -132, 65, 28, 28, -155, -156, 134, -37,
-	-69, -161, 214, 48, 217, -93, -161, -107, 58, -161,
-	54, -107, 38, 215, 218, -156, 33, 38, 136, 216,
-	137, 217, -160, 218, -61, 133, -161, -161,
+	112, 113, 115, 114, 138, 116, 131, 49, 150, 151,
+	153, 154, 25, 132, 133, 136, 137, -166, 8, 213,
+	53, -165, 226, -82, 15, -26, 5, -24, -169, -24,
+	-24, -24, -24, -24, -147, 53, -104, 120, 70, 146,
+	118, 124, -107, 56, -106, 219, 150, 161, 155, 182,
+	174, 172, 175, 201, 65, 153, 134, 170, 166, 164,
+	27, 187, 224, 165, 130, 129, 202, 159, 160, 186,
+	32, 221, 34, 142, 185, 181, 184, 158, 180, 38,
+	200, 177, 167, 18, 137, 140, 125, 144, 223, 163,
+	141, 136, 154, 203, 37, 191, 157, 128, 151, 148,
+	178, 143, 168, 169, 183, 156, 179, 152, 145, 138,
+	192, 225, 176, 173, 149, 147, 196, 197, 198, 199,
+	222, 171, 193, -97, 120, 122, 118, 118, 119, 120,
+	118, -51, -113, 56, -106, 120, 146, 118, 106, 175,
+	112, 194, 119, 32, 144, -122, 118, 195, 147, 196,
+	197, 198, 199, 56, 203, 202, -113, 152, -118, -118,
+	-118, -118, -118, -2, -86, 17, 16, -5, -3, -166,
+	6, 20, 21, -30, 39, 40, -25, -36, 97, -37,
+	-113, -56, 72, -61, 29, 56, -106, 23, -60, -57,
+	-75, -73, -74, 106, 107, 95, 96, 103, 73, 108,
+	-65, -63, -64, -66, 58, 57, 66, 59, 60, 61,
+	62, 67, 68, 69, -107, -71, -166, 43, 44, 214,
+	215, 218, 216, 75, 33, 204, 212, 211, 210, 208,
+	209, 206, 207, 123, 205, 101, 213, -97, -39, -40,
+	-41, -42, -53, -74, -166, -51, 11, -46, -51, -93,
+	-121, -94, -95, 203, 202, 201, 175, 200, -75, -107,
+	-113, -148, -144, 56, 119, -51, 213, -107, -100, 123,
+	118, -51, -51, -99, 123, 56, -99, -51, 109, -51,
+	56, 30, 205, 56, 144, 118, 145, 120, -119, -166,
+	-108, -107, -105, 117, 71, 22, 24, 189, 74, 106,
+	16, 75, 105, 214, 112, 47, 206, 207, 204, 205,
+	194, 29, 10, 25, 132, 21, 99, 114, 78, 79,
+	135, 23, 133, 69, 19, 50, 11, 13, 14, 123,
+	122, 90, 119, 45, 8, 108, 26, 87, 41, 28,
+	43, 88, 17, 208, 209, 31, 218, 139, 101, 48,
+	35, 72, 67, 51, 70, 15, 46, 89, 115, 213,
+	44, 6, 217, 30, 131, 42, 118, 195, 77, 121,
+	68, 5, 124, 9, 49, 52, 210, 211, 212, 33,
+	76, 12, -119, -119, -119, 148, 149, -119, -119, 51,
+	-119, -167, 55, -87, 19, 31, -37, -113, -83, -84,
+	-37, -82, -2, -24, 35, -28, 21, 64, 11, -110,
+	71, 70, 87, -109, 22, -107, 58, 109, -37, -58,
+	90, 72, 88, 89, 74, 92, 91, 102, 95, 96,
+	97, 98, 99, 100, 101, 93, 94, 105, 80, 81,
+	82, 83, 84, 85, 86, -98, -166, -74, -166, 110,
+	111, -61, -61, -61, -61, -61, -61, -61, -166, -2,
+	-69, -37, -166, -166, -166, -166, -166, -166, -166, -78,
+	-37, -166, -170, -166, -170, -170, -170, -170, -170, -170,
+	-170, -166, -166, -166, -166, -52, 26, -51, 30, 54,
+	-47, -49, -48, -50, 41, 45, 47, 42, 43, 44,
+	48, -117, 22, -39, -166, -116, 140, -115, 22, -113,
+	58, -51, -168, 54, 11, 52, 54, -93, -111, -108,
+	58, 30, 80, 109, 55, 54, -124, -127, -129, -128,
+	-125, -126, 172, 173, 106, 176, 178, 179, 180, 181,
+	182, 183, 184, 185, 186, 187, 134, 168, 169, 170,
+	171, 155, 156, 157, 158, 159, 160, 161, 163, 164,
+	165, 166, 167, 56, -119, 120, -162, 52, -51, 72,
+	-51, -119, 121, -51, 23, 51, -51, -114, -113, -105,
+	-119, -119, -119, -119, -119, -119, -119, -119, -119, -119,
+	-51, 9, 90, 54, 18, 109, 54, -85, 24, 25,
+	-86, -167, -30, -62, -107, 59, 62, -29, 42, -51,
+	-37, -37, -67, 67, 72, 68, 69, -109, 97, -114,
+	-108, -105, -61, -68, -71, -74, 63, 90, 88, 89,
+	74, -61, -61, -61, -61, -61, -61, -61, -61, -61,
+	-61, -61, -61, -61, -61, -61, -120, 56, 58, 56,
+	-60, -60, -107, -35, 21, -34, -36, -167, 54, -167,
+	-2, -34, -34, -37, -37, -34, -28, -76, -77, 76,
+	-107, -167, -34, -35, -34, -34, -90, 140, -51, -93,
+	-40, -41, -41, -40, -41, 41, 41, 41, 46, 41,
+	46, 41, -48, -113, -167, -54, 49, 122, 50, -166,
+	-115, -90, -39, -51, -95, -118, -37, -108, -114, -149,
+	-150, -151, -108, 58, 59, -144, -145, -152, 125, 124,
+	-146, 119, 28, -140, 67, 72, -136, 192, -130, 53,
+	-130, -130, -130, -130, -134, 175, -134, -134, -134, 53,
+	-130, -130, -130, -138, 53, -138, -138, -139, 53, -139,
+	-112, 52, -51, -160, 222, -161, 56, 23, -101, 117,
+	114, 115, -157, 113, 189, 175, 65, 29, 15, 214,
+	140, 225, 56, 141, -51, -51, -119, 37, -37, -37,
+	-84, -87, -96, 19, 11, 33, 33, -34, 67, 68,
+	69, 109, -166, -68, -61, -61, -61, -33, 135, 71,
+	-167, -167, -34, 54, -37, -167, -167, -167, 54, 52,
+	22, -167, -34, -79, -77, 78, -37, -167, -167, -167,
+	-167, -167, -59, 30, 33, -2, -166, -166, -55, 12,
+	-44, -43, 51, 52, -45, 51, -43, 41, 41, 119,
+	119, 119, -91, -107, -55, -55, 109, 54, -151, 80,
+	53, 28, -146, 56, 56, -131, 29, 67, -137, 193,
+	59, -134, -134, -135, 105, 30, -135, -135, -135, -143,
+	58, 59, 59, 51, -107, -119, -159, -158, -108, -118,
+	-163, 146, 126, 127, 130, 129, 56, 119, 28, 125,
+	128, -163, 146, -102, -103, 121, 22, 119, 28, 140,
+	-119, 38, -51, -38, 11, 97, -108, -35, -33, 71,
+	-61, -61, -167, -36, -123, 106, 172, 134, 170, 166,
+	186, 177, 191, 168, 192, -120, -123, 219, -82, 79,
+	-37, 77, -92, 51, -93, -70, -72, -71, -166, -2,
+	-88, -107, -91, -82, -37, -37, 53, -37, -166, -166,
+	-166, -167, 54, -82, -150, -151, -154, -153, -107, 56,
+	-133, 51, 58, 59, 60, 67, 204, 55, -135, -135,
+	56, 56, 106, 55, 54, 54, 55, 54, -51, 54,
+	80, -118, -107, -118, -107, -51, -118, -107, -55, -39,
+	-167, -61, -167, -130, -130, -130, -139, -130, 160, -130,
+	160, -167, -167, -166, -32, 217, -37, 27, -92, 54,
+	-167, -167, -167, 54, 109, -167, -86, -89, -107, -89,
+	-89, -89, -116, -107, -86, 55, 54, -130, -141, 189,
+	9, 58, 59, 59, -119, -158, -151, 53, 26, -80,
+	13, -134, 56, -61, -167, 58, 28, -72, 33, -2,
+	-166, -107, -107, 54, 55, -167, -167, -167, -54, -112,
+	-153, -142, 125, 28, 124, 204, 55, 55, -89, -166,
+	-81, 14, 16, -31, 90, 222, 9, -70, -2, 109,
+	-107, -132, 65, 28, 28, 55, -155, -156, 140, -37,
+	-69, -167, 220, 48, 223, -93, -167, -107, 58, -162,
+	-167, 54, -107, 38, 221, 224, -160, -156, 33, 38,
+	142, 222, 143, 223, -166, 224, -61, 139, -167, -167,
 }
 var yyDef = [...]int{
 
 	0, -2, 2, -2, 5, 6, 7, 8, 9, 10,
 	11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
-	21, 436, 0, 211, 211, 211, 211, 211, 211, 0,
-	496, 478, 0, 0, 0, 0, 197, 201, 202, 0,
-	204, 205, 676, 676, 676, 676, 676, 0, 33, 34,
-	674, 1, 3, 444, 0, 0, 215, 218, 213, 0,
-	478, 0, 0, 0, 54, 0, 0, 664, 0, 476,
-	497, 498, 501, 502, 597, 598, 599, 600, 601, 602,
-	603, 604, 605, 606, 607, 608, 609, 610, 611, 612,
-	613, 614, 615, 616, 617, 618, 619, 620, 621, 622,
-	623, 624, 625, 626, 627, 628, 629, 630, 631, 632,
-	633, 634, 635, 636, 637, 638, 639, 640, 641, 642,
-	643, 644, 645, 646, 647, 648, 649, 650, 651, 652,
-	653, 654, 655, 656, 657, 658, 659, 660, 661, 662,
-	663, 665, 666, 667, 668, 669, 670, 671, 672, 673,
-	0, 0, 479, 0, 474, 0, 474, 0, 172, 282,
-	505, 506, 664, 0, 0, 0, 0, 677, 677, 677,
-	677, 0, 677, 677, 190, 192, 193, 194, 195, 677,
-	198, 199, 200, 203, 206, 207, 208, 209, 210, 27,
-	448, 0, 0, 436, 29, 0, 211, 216, 217, 221,
-	219, 220, 212, 0, 229, 233, 0, 290, 0, 295,
-	297, -2, -2, 0, 332, 333, 334, 335, 336, 0,
-	0, 0, 0, 0, 0, 0, 359, 360, 361, 362,
-	421, 422, 423, 424, 425, 426, 427, 428, 299, 300,
-	418, 468, 0, 0, 0, 0, 0, 0, 0, 409,
-	0, 383, 383, 383, 383, 383, 383, 383, 383, 0,
-	0, 0, 0, 0, 0, 240, 242, 243, 244, 263,
-	0, 265, 0, 0, 40, 44, 0, 0, 469, -2,
-	-2, -2, 604, -2, 0, 418, 0, 0, 60, 0,
-	0, 677, 0, 0, 0, 0, 677, 0, 0, 0,
-	0, 0, 171, 0, 173, 677, 677, 677, 677, 677,
-	677, 677, 677, 182, 678, 679, 503, 504, 509, 510,
-	511, 512, 513, 514, 515, 516, 517, 518, 519, 520,
-	521, 522, 523, 524, 525, 526, 527, 528, 529, 530,
-	531, 532, 533, 534, 535, 536, 537, 538, 539, 540,
-	541, 542, 543, 544, 545, 546, 547, 548, 549, 550,
-	551, 552, 553, 554, 555, 556, 557, 558, 559, 560,
-	561, 562, 563, 564, 565, 566, 567, 568, 569, 570,
-	571, 572, 573, 574, 575, 576, 577, 578, 579, 580,
-	581, 582, 583, 584, 585, 586, 587, 588, 589, 590,
-	591, 592, 593, 594, 595, 596, 183, 184, 185, 677,
-	677, 187, 188, 0, 196, 28, 675, 22, 0, 0,
-	445, 0, 437, 438, 441, 444, 27, 218, 0, 223,
-	222, 214, 0, 230, 0, 0, 0, 234, 0, 236,
-	237, 0, 293, 0, 0, 0, 0, 0, 0, 0,
+	21, 458, 0, 233, 233, 233, 233, 233, 233, 0,
+	517, 500, 0, 0, 0, 0, 219, 223, 224, 0,
+	226, 227, 701, 701, 701, 701, 701, 0, 33, 34,
+	699, 1, 3, 466, 0, 0, 237, 240, 235, 0,
+	500, 0, 0, 0, 54, 0, 0, 689, 0, 690,
+	498, 518, 519, 522, 523, 619, 620, 621, 622, 623,
+	624, 625, 626, 627, 628, 629, 630, 631, 632, 633,
+	634, 635, 636, 637, 638, 639, 640, 641, 642, 643,
+	644, 645, 646, 647, 648, 649, 650, 651, 652, 653,
+	654, 655, 656, 657, 658, 659, 660, 661, 662, 663,
+	664, 665, 666, 667, 668, 669, 670, 671, 672, 673,
+	674, 675, 676, 677, 678, 679, 680, 681, 682, 683,
+	684, 685, 686, 687, 688, 691, 692, 693, 694, 695,
+	696, 697, 698, 0, 0, 501, 0, 496, 0, 496,
+	0, 194, 304, 526, 527, 689, 690, 0, 0, 0,
+	0, 702, 702, 702, 702, 0, 702, 702, 212, 214,
+	215, 216, 217, 702, 220, 221, 222, 225, 228, 229,
+	230, 231, 232, 27, 470, 0, 0, 458, 29, 0,
+	233, 238, 239, 243, 241, 242, 234, 0, 251, 255,
+	0, 312, 0, 317, 319, -2, -2, 0, 354, 355,
+	356, 357, 358, 0, 0, 0, 0, 0, 0, 0,
+	381, 382, 383, 384, 443, 444, 445, 446, 447, 448,
+	449, 450, 321, 322, 440, 490, 0, 0, 0, 0,
+	0, 0, 0, 431, 0, 405, 405, 405, 405, 405,
+	405, 405, 405, 0, 0, 0, 0, 0, 0, 262,
+	264, 265, 266, 285, 0, 287, 0, 0, 40, 44,
+	0, 0, 491, -2, -2, -2, 626, -2, 0, 440,
+	0, 0, 69, 0, 0, 702, 0, 59, 0, 0,
+	0, 702, 0, 0, 0, 0, 0, 193, 0, 195,
+	702, 702, 702, 702, 702, 702, 702, 702, 204, 703,
+	704, 524, 525, 530, 531, 532, 533, 534, 535, 536,
+	537, 538, 539, 540, 541, 542, 543, 544, 545, 546,
+	547, 548, 549, 550, 551, 552, 553, 554, 555, 556,
+	557, 558, 559, 560, 561, 562, 563, 564, 565, 566,
+	567, 568, 569, 570, 571, 572, 573, 574, 575, 576,
+	577, 578, 579, 580, 581, 582, 583, 584, 585, 586,
+	587, 588, 589, 590, 591, 592, 593, 594, 595, 596,
+	597, 598, 599, 600, 601, 602, 603, 604, 605, 606,
+	607, 608, 609, 610, 611, 612, 613, 614, 615, 616,
+	617, 618, 205, 206, 207, 702, 702, 209, 210, 0,
+	218, 28, 700, 22, 0, 0, 467, 0, 459, 460,
+	463, 466, 27, 240, 0, 245, 244, 236, 0, 252,
+	0, 0, 0, 256, 0, 258, 259, 0, 315, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 317, 318, 319, 320, 321, 322, 323, 296,
-	0, 310, 0, 0, 0, 352, 353, 354, 355, 356,
-	357, 0, 225, 27, 0, 330, 0, 0, 0, 0,
-	0, 0, 221, 0, 410, 0, 375, 0, 376, 377,
-	378, 379, 380, 381, 382, 0, 225, 0, 0, 42,
-	0, 281, 0, 0, 0, 0, 0, 0, 270, 0,
-	0, 273, 0, 0, 0, 0, 264, 0, 0, 284,
-	635, 266, 0, 268, 269, 42, 0, 0, 38, 39,
-	0, 45, 676, 50, 51, 48, 0, 0, 148, 0,
-	113, 109, 65, 66, 102, 68, 102, 102, 102, 102,
-	126, 126, 126, 126, 94, 95, 96, 97, 98, 0,
-	81, 102, 102, 102, 85, 69, 70, 71, 72, 73,
-	74, 75, 104, 104, 104, 106, 106, 499, 56, 0,
-	58, 0, 0, 160, 0, 168, 475, 0, 677, 283,
-	507, 508, 174, 175, 176, 177, 178, 179, 180, 181,
-	186, 189, 191, 449, 0, 0, 0, 0, 0, 440,
-	442, 443, 448, 30, 221, 0, 429, 0, 0, 0,
-	224, 25, 291, 292, 294, 311, 0, 313, 315, 235,
-	231, 0, 419, -2, 301, 302, 326, 327, 328, 0,
-	0, 0, 0, 324, 306, 0, 337, 338, 339, 340,
-	341, 342, 343, 344, 345, 346, 347, 348, 351, 394,
-	395, 0, 349, 350, 358, 0, 0, 226, 227, 329,
-	0, 467, 27, 0, 0, 0, 0, 0, 0, 416,
-	413, 0, 0, 384, 0, 0, 0, 0, 0, 0,
-	280, 288, 241, 259, 261, 0, 256, 271, 272, 274,
-	0, 276, 0, 278, 279, 245, 246, 247, 0, 0,
-	0, 0, 267, 288, 288, 41, 470, 46, 471, 419,
-	0, 59, 149, 151, 154, 155, 156, 61, 62, 0,
-	0, 0, 0, 143, 144, 116, 114, 0, 111, 110,
-	67, 0, 126, 126, 88, 89, 129, 0, 129, 129,
-	129, 0, 82, 83, 84, 76, 0, 77, 78, 79,
-	0, 80, 0, 0, 677, 477, 676, 491, 161, 480,
-	481, 482, 483, 484, 485, 486, 487, 488, 489, 490,
-	0, 167, 677, 170, 0, 446, 447, 439, 23, 0,
-	472, 473, 430, 431, 238, 312, 314, 316, 0, 225,
-	303, 324, 307, 0, 304, 0, 0, 298, 363, 0,
-	0, 331, -2, 366, 367, 0, 0, 0, 0, 436,
-	0, 414, 0, 0, 374, 385, 386, 387, 388, 461,
-	0, 0, -2, 0, 0, 436, 0, 253, 260, 0,
-	0, 254, 0, 255, 275, 277, 0, 0, 0, 0,
-	251, 436, 37, 0, 0, 152, 0, 0, 139, 0,
-	141, 142, 122, 0, 115, 64, 112, 0, 129, 129,
-	90, 0, 0, 91, 92, 93, 0, 100, 0, 0,
-	0, 500, 57, 157, 0, 676, 492, 493, 494, 495,
-	0, 169, 450, 24, 288, 0, 232, 420, 0, 305,
-	0, 325, 308, 364, 228, 0, 102, 102, 399, 102,
-	106, 402, 102, 404, 102, 407, 0, 0, 0, 411,
-	373, 417, 0, 31, 0, 461, 451, 463, 465, 0,
-	27, 0, 457, 0, 444, 289, 257, 0, 262, 0,
-	0, 0, 265, 0, 444, 150, 153, 0, 145, 102,
-	140, 124, 0, 117, 118, 119, 120, 121, 103, 86,
-	87, 130, 127, 128, 99, 0, 0, 107, 0, 677,
-	158, 159, 0, 432, 239, 365, 309, 368, 396, 126,
-	400, 401, 403, 405, 406, 408, 370, 369, 0, 0,
-	0, 415, 0, 32, 0, 466, -2, 0, 0, 0,
-	43, 35, 0, 249, 0, 0, 0, 284, 252, 36,
-	499, 0, 147, 131, 125, 0, 101, 0, 0, 55,
-	0, 434, 0, 397, 398, 389, 372, 412, 0, 464,
-	0, -2, 0, 459, 458, 0, 258, 285, 286, 287,
-	248, 138, 146, 136, 0, 133, 135, 123, 105, 108,
-	0, 26, 0, 0, 0, 0, 0, 0, 454, 27,
-	0, 250, 63, 0, 132, 134, 0, 163, 0, 435,
-	433, 371, 0, 0, 0, 462, -2, 460, 137, 162,
-	0, 0, 390, 0, 393, 164, 0, 391, 0, 0,
-	0, 0, 0, 392, 0, 0, 165, 166,
+	0, 0, 0, 0, 0, 0, 0, 0, 339, 340,
+	341, 342, 343, 344, 345, 318, 0, 332, 0, 0,
+	0, 374, 375, 376, 377, 378, 379, 0, 247, 27,
+	0, 352, 0, 0, 0, 0, 0, 0, 243, 0,
+	432, 0, 397, 0, 398, 399, 400, 401, 402, 403,
+	404, 0, 247, 0, 0, 42, 0, 303, 0, 0,
+	0, 0, 0, 0, 292, 0, 0, 295, 0, 0,
+	0, 0, 286, 0, 0, 306, 659, 288, 0, 290,
+	291, 42, 0, 0, 38, 39, 0, 45, 701, 50,
+	51, 48, 0, 0, 157, 0, 122, 118, 74, 75,
+	111, 77, 111, 111, 111, 111, 135, 135, 135, 135,
+	103, 104, 105, 106, 107, 0, 90, 111, 111, 111,
+	94, 78, 79, 80, 81, 82, 83, 84, 113, 113,
+	113, 115, 115, 520, 56, 0, 62, 0, 67, 0,
+	0, 173, 0, 190, 497, 0, 702, 305, 528, 529,
+	196, 197, 198, 199, 200, 201, 202, 203, 208, 211,
+	213, 471, 0, 0, 0, 0, 0, 462, 464, 465,
+	470, 30, 243, 0, 451, 0, 0, 0, 246, 25,
+	313, 314, 316, 333, 0, 335, 337, 257, 253, 0,
+	441, -2, 323, 324, 348, 349, 350, 0, 0, 0,
+	0, 346, 328, 0, 359, 360, 361, 362, 363, 364,
+	365, 366, 367, 368, 369, 370, 373, 416, 417, 0,
+	371, 372, 380, 0, 0, 248, 249, 351, 0, 489,
+	27, 0, 0, 0, 0, 0, 0, 438, 435, 0,
+	0, 406, 0, 0, 0, 0, 0, 0, 302, 310,
+	263, 281, 283, 0, 278, 293, 294, 296, 0, 298,
+	0, 300, 301, 267, 268, 269, 0, 0, 0, 0,
+	289, 310, 310, 41, 492, 46, 493, 441, 0, 68,
+	158, 160, 163, 164, 165, 70, 71, 0, 0, 0,
+	0, 152, 153, 125, 123, 0, 120, 119, 76, 0,
+	135, 135, 97, 98, 138, 0, 138, 138, 138, 0,
+	91, 92, 93, 85, 0, 86, 87, 88, 0, 89,
+	0, 0, 702, 58, 0, 60, 61, 499, 701, 0,
+	0, 512, 174, 502, 503, 504, 505, 506, 507, 508,
+	509, 510, 511, 0, 189, 702, 192, 0, 468, 469,
+	461, 23, 0, 494, 495, 452, 453, 260, 334, 336,
+	338, 0, 247, 325, 346, 329, 0, 326, 0, 0,
+	320, 385, 0, 0, 353, -2, 388, 389, 0, 0,
+	0, 0, 458, 0, 436, 0, 0, 396, 407, 408,
+	409, 410, 483, 0, 0, -2, 0, 0, 458, 0,
+	275, 282, 0, 0, 276, 0, 277, 297, 299, 0,
+	0, 0, 0, 273, 458, 37, 0, 0, 161, 0,
+	0, 148, 0, 150, 151, 131, 0, 124, 73, 121,
+	0, 138, 138, 99, 0, 0, 100, 101, 102, 0,
+	109, 0, 0, 0, 521, 57, 63, 64, 0, 166,
+	701, 0, 175, 176, 177, 178, 179, 180, 181, 182,
+	183, 701, 0, 0, 701, 513, 514, 515, 516, 0,
+	191, 472, 24, 310, 0, 254, 442, 0, 327, 0,
+	347, 330, 386, 250, 0, 111, 111, 421, 111, 115,
+	424, 111, 426, 111, 429, 0, 0, 0, 433, 395,
+	439, 0, 31, 0, 483, 473, 485, 487, 0, 27,
+	0, 479, 0, 466, 311, 279, 0, 284, 0, 0,
+	0, 287, 0, 466, 159, 162, 0, 154, 111, 149,
+	133, 0, 126, 127, 128, 129, 130, 112, 95, 96,
+	139, 136, 137, 108, 0, 0, 116, 0, 702, 0,
+	0, 167, 0, 168, 170, 171, 172, 0, 454, 261,
+	387, 331, 390, 418, 135, 422, 423, 425, 427, 428,
+	430, 392, 391, 0, 0, 0, 437, 0, 32, 0,
+	488, -2, 0, 0, 0, 43, 35, 0, 271, 0,
+	0, 0, 306, 274, 36, 520, 0, 156, 140, 134,
+	0, 110, 0, 0, 55, 65, 66, 0, 0, 456,
+	0, 419, 420, 411, 394, 434, 0, 486, 0, -2,
+	0, 481, 480, 0, 280, 307, 308, 309, 270, 147,
+	155, 145, 0, 142, 144, 132, 114, 117, 0, 0,
+	26, 0, 0, 0, 0, 0, 0, 476, 27, 0,
+	272, 72, 0, 141, 143, 59, 0, 185, 0, 457,
+	455, 393, 0, 0, 0, 484, -2, 482, 146, 62,
+	184, 0, 0, 412, 0, 415, 169, 186, 0, 413,
+	0, 0, 0, 0, 0, 414, 0, 0, 187, 188,
 }
 var yyTok1 = [...]int{
 
@@ -1937,7 +2016,7 @@ var yyTok1 = [...]int{
 	3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 	3, 3, 3, 73, 3, 3, 3, 100, 92, 3,
 	53, 55, 97, 95, 54, 96, 109, 98, 3, 3,
-	3, 3, 3, 3, 3, 3, 3, 3, 3, 220,
+	3, 3, 3, 3, 3, 3, 3, 3, 3, 226,
 	81, 80, 82, 3, 3, 3, 3, 3, 3, 3,
 	3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 	3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
@@ -1968,7 +2047,7 @@ var yyTok2 = [...]int{
 	189, 190, 191, 192, 193, 194, 195, 196, 197, 198,
 	199, 200, 201, 202, 203, 204, 205, 206, 207, 208,
 	209, 210, 211, 212, 213, 214, 215, 216, 217, 218,
-	219,
+	219, 220, 221, 222, 223, 224, 225,
 }
 var yyTok3 = [...]int{
 	0,
@@ -2313,29 +2392,29 @@ yydefault:
 
 	case 1:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:281
+		//line sql.y:287
 		{
 			setParseTree(yylex, yyDollar[1].statement)
 		}
 	case 2:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:286
+		//line sql.y:292
 		{
 		}
 	case 3:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:287
+		//line sql.y:293
 		{
 		}
 	case 4:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:291
+		//line sql.y:297
 		{
 			yyVAL.statement = yyDollar[1].selStmt
 		}
 	case 22:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:314
+		//line sql.y:320
 		{
 			sel := yyDollar[1].selStmt.(*Select)
 			sel.OrderBy = yyDollar[2].orderBy
@@ -2345,55 +2424,55 @@ yydefault:
 		}
 	case 23:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:322
+		//line sql.y:328
 		{
 			yyVAL.selStmt = &Union{Type: yyDollar[2].str, Left: yyDollar[1].selStmt, Right: yyDollar[3].selStmt, OrderBy: yyDollar[4].orderBy, Limit: yyDollar[5].limit, Lock: yyDollar[6].str}
 		}
 	case 24:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:326
+		//line sql.y:332
 		{
 			yyVAL.selStmt = &Select{Comments: Comments(yyDollar[2].bytes2), Cache: yyDollar[3].str, SelectExprs: SelectExprs{Nextval{Expr: yyDollar[5].expr}}, From: TableExprs{&AliasedTableExpr{Expr: yyDollar[7].tableName}}}
 		}
 	case 25:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:332
+		//line sql.y:338
 		{
 			yyVAL.statement = &Stream{Comments: Comments(yyDollar[2].bytes2), SelectExpr: yyDollar[3].selectExpr, Table: yyDollar[5].tableName}
 		}
 	case 26:
 		yyDollar = yyS[yypt-10 : yypt+1]
-		//line sql.y:339
+		//line sql.y:345
 		{
 			yyVAL.selStmt = &Select{Comments: Comments(yyDollar[2].bytes2), Cache: yyDollar[3].str, Distinct: yyDollar[4].str, Hints: yyDollar[5].str, SelectExprs: yyDollar[6].selectExprs, From: yyDollar[7].tableExprs, Where: NewWhere(WhereStr, yyDollar[8].expr), GroupBy: GroupBy(yyDollar[9].exprs), Having: NewWhere(HavingStr, yyDollar[10].expr)}
 		}
 	case 27:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:345
+		//line sql.y:351
 		{
 			yyVAL.selStmt = yyDollar[1].selStmt
 		}
 	case 28:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:349
+		//line sql.y:355
 		{
 			yyVAL.selStmt = &ParenSelect{Select: yyDollar[2].selStmt}
 		}
 	case 29:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:355
+		//line sql.y:361
 		{
 			yyVAL.selStmt = yyDollar[1].selStmt
 		}
 	case 30:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:359
+		//line sql.y:365
 		{
 			yyVAL.selStmt = &ParenSelect{Select: yyDollar[2].selStmt}
 		}
 	case 31:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:366
+		//line sql.y:372
 		{
 			// insert_data returns a *Insert pre-filled with Columns & Values
 			ins := yyDollar[6].ins
@@ -2407,7 +2486,7 @@ yydefault:
 		}
 	case 32:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:378
+		//line sql.y:384
 		{
 			cols := make(Columns, 0, len(yyDollar[7].updateExprs))
 			vals := make(ValTuple, 0, len(yyDollar[8].updateExprs))
@@ -2419,172 +2498,232 @@ yydefault:
 		}
 	case 33:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:390
+		//line sql.y:396
 		{
 			yyVAL.str = InsertStr
 		}
 	case 34:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:394
+		//line sql.y:400
 		{
 			yyVAL.str = ReplaceStr
 		}
 	case 35:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:400
+		//line sql.y:406
 		{
 			yyVAL.statement = &Update{Comments: Comments(yyDollar[2].bytes2), TableExprs: yyDollar[3].tableExprs, Exprs: yyDollar[5].updateExprs, Where: NewWhere(WhereStr, yyDollar[6].expr), OrderBy: yyDollar[7].orderBy, Limit: yyDollar[8].limit}
 		}
 	case 36:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:406
+		//line sql.y:412
 		{
 			yyVAL.statement = &Delete{Comments: Comments(yyDollar[2].bytes2), TableExprs: TableExprs{&AliasedTableExpr{Expr: yyDollar[4].tableName}}, Partitions: yyDollar[5].partitions, Where: NewWhere(WhereStr, yyDollar[6].expr), OrderBy: yyDollar[7].orderBy, Limit: yyDollar[8].limit}
 		}
 	case 37:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:410
+		//line sql.y:416
 		{
 			yyVAL.statement = &Delete{Comments: Comments(yyDollar[2].bytes2), Targets: yyDollar[3].tableNames, TableExprs: yyDollar[5].tableExprs, Where: NewWhere(WhereStr, yyDollar[6].expr)}
 		}
 	case 38:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:415
+		//line sql.y:421
 		{
 		}
 	case 39:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:416
+		//line sql.y:422
 		{
 		}
 	case 40:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:420
+		//line sql.y:426
 		{
 			yyVAL.tableNames = TableNames{yyDollar[1].tableName}
 		}
 	case 41:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:424
+		//line sql.y:430
 		{
 			yyVAL.tableNames = append(yyVAL.tableNames, yyDollar[3].tableName)
 		}
 	case 42:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:429
+		//line sql.y:435
 		{
 			yyVAL.partitions = nil
 		}
 	case 43:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:433
+		//line sql.y:439
 		{
 			yyVAL.partitions = yyDollar[3].partitions
 		}
 	case 44:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:439
+		//line sql.y:445
 		{
 			yyVAL.statement = &Set{Comments: Comments(yyDollar[2].bytes2), Exprs: yyDollar[3].updateExprs}
 		}
 	case 45:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:443
+		//line sql.y:449
 		{
 			yyVAL.statement = &Set{Comments: Comments(yyDollar[2].bytes2), Scope: yyDollar[3].str, Exprs: yyDollar[4].updateExprs}
 		}
 	case 46:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:447
+		//line sql.y:453
 		{
 			yyVAL.statement = &Set{Comments: Comments(yyDollar[2].bytes2), Charset: yyDollar[4].colIdent}
 		}
 	case 50:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:458
+		//line sql.y:464
 		{
 			yyVAL.colIdent = yyDollar[1].colIdent
 		}
 	case 51:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:462
+		//line sql.y:468
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
 	case 52:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:468
+		//line sql.y:474
 		{
 			yyVAL.str = SessionStr
 		}
 	case 53:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:472
+		//line sql.y:478
 		{
 			yyVAL.str = GlobalStr
 		}
 	case 54:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:478
+		//line sql.y:484
 		{
 			yyDollar[1].ddl.TableSpec = yyDollar[2].TableSpec
 			yyVAL.statement = yyDollar[1].ddl
 		}
 	case 55:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:483
+		//line sql.y:489
 		{
 			// Change this to an alter statement
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[7].tableName, NewName: yyDollar[7].tableName}
 		}
 	case 56:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:488
+		//line sql.y:494
 		{
 			yyVAL.statement = &DDL{Action: CreateStr, NewName: yyDollar[3].tableName.ToViewName()}
 		}
 	case 57:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:492
+		//line sql.y:498
 		{
 			yyVAL.statement = &DDL{Action: CreateStr, NewName: yyDollar[5].tableName.ToViewName()}
 		}
 	case 58:
+		yyDollar = yyS[yypt-5 : yypt+1]
+		//line sql.y:502
+		{
+			yyVAL.statement = &DDL{Action: CreateVindexStr, VindexSpec: &VindexSpec{
+				Name:   yyDollar[3].colIdent,
+				Type:   yyDollar[4].colIdent,
+				Params: yyDollar[5].vindexParams,
+			}}
+		}
+	case 59:
+		yyDollar = yyS[yypt-0 : yypt+1]
+		//line sql.y:511
+		{
+			yyVAL.colIdent = NewColIdent("")
+		}
+	case 60:
+		yyDollar = yyS[yypt-2 : yypt+1]
+		//line sql.y:515
+		{
+			yyVAL.colIdent = yyDollar[2].colIdent
+		}
+	case 61:
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:521
+		{
+			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
+		}
+	case 62:
+		yyDollar = yyS[yypt-0 : yypt+1]
+		//line sql.y:526
+		{
+			var v []VindexParam
+			yyVAL.vindexParams = v
+		}
+	case 63:
+		yyDollar = yyS[yypt-2 : yypt+1]
+		//line sql.y:531
+		{
+			yyVAL.vindexParams = yyDollar[2].vindexParams
+		}
+	case 64:
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:537
+		{
+			yyVAL.vindexParams = make([]VindexParam, 0, 4)
+			yyVAL.vindexParams = append(yyVAL.vindexParams, yyDollar[1].vindexParam)
+		}
+	case 65:
+		yyDollar = yyS[yypt-3 : yypt+1]
+		//line sql.y:542
+		{
+			yyVAL.vindexParams = append(yyVAL.vindexParams, yyDollar[3].vindexParam)
+		}
+	case 66:
+		yyDollar = yyS[yypt-3 : yypt+1]
+		//line sql.y:548
+		{
+			yyVAL.vindexParam = VindexParam{Key: yyDollar[1].colIdent, Val: yyDollar[3].str}
+		}
+	case 67:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:498
+		//line sql.y:554
 		{
 			yyVAL.ddl = &DDL{Action: CreateStr, NewName: yyDollar[4].tableName}
 			setDDL(yylex, yyVAL.ddl)
 		}
-	case 59:
+	case 68:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:505
+		//line sql.y:561
 		{
 			yyVAL.TableSpec = yyDollar[2].TableSpec
 			yyVAL.TableSpec.Options = yyDollar[4].str
 		}
-	case 60:
+	case 69:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:512
+		//line sql.y:568
 		{
 			yyVAL.TableSpec = &TableSpec{}
 			yyVAL.TableSpec.AddColumn(yyDollar[1].columnDefinition)
 		}
-	case 61:
+	case 70:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:517
+		//line sql.y:573
 		{
 			yyVAL.TableSpec.AddColumn(yyDollar[3].columnDefinition)
 		}
-	case 62:
+	case 71:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:521
+		//line sql.y:577
 		{
 			yyVAL.TableSpec.AddIndex(yyDollar[3].indexDefinition)
 		}
-	case 63:
+	case 72:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:527
+		//line sql.y:583
 		{
 			yyDollar[2].columnType.NotNull = yyDollar[3].boolVal
 			yyDollar[2].columnType.Default = yyDollar[4].optVal
@@ -2594,645 +2733,684 @@ yydefault:
 			yyDollar[2].columnType.Comment = yyDollar[8].optVal
 			yyVAL.columnDefinition = &ColumnDefinition{Name: NewColIdent(string(yyDollar[1].bytes)), Type: yyDollar[2].columnType}
 		}
-	case 64:
+	case 73:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:538
+		//line sql.y:594
 		{
 			yyVAL.columnType = yyDollar[1].columnType
 			yyVAL.columnType.Unsigned = yyDollar[2].boolVal
 			yyVAL.columnType.Zerofill = yyDollar[3].boolVal
 		}
-	case 67:
+	case 76:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:548
+		//line sql.y:604
 		{
 			yyVAL.columnType = yyDollar[1].columnType
 			yyVAL.columnType.Length = yyDollar[2].optVal
 		}
-	case 68:
+	case 77:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:553
+		//line sql.y:609
 		{
 			yyVAL.columnType = yyDollar[1].columnType
 		}
-	case 69:
+	case 78:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:559
+		//line sql.y:615
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
-	case 70:
+	case 79:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:563
+		//line sql.y:619
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
-	case 71:
+	case 80:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:567
+		//line sql.y:623
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
-	case 72:
+	case 81:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:571
+		//line sql.y:627
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
-	case 73:
+	case 82:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:575
+		//line sql.y:631
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
-	case 74:
+	case 83:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:579
+		//line sql.y:635
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
-	case 75:
+	case 84:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:583
+		//line sql.y:639
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
-	case 76:
+	case 85:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:589
+		//line sql.y:645
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 			yyVAL.columnType.Length = yyDollar[2].LengthScaleOption.Length
 			yyVAL.columnType.Scale = yyDollar[2].LengthScaleOption.Scale
 		}
-	case 77:
+	case 86:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:595
+		//line sql.y:651
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 			yyVAL.columnType.Length = yyDollar[2].LengthScaleOption.Length
 			yyVAL.columnType.Scale = yyDollar[2].LengthScaleOption.Scale
 		}
-	case 78:
+	case 87:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:601
+		//line sql.y:657
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 			yyVAL.columnType.Length = yyDollar[2].LengthScaleOption.Length
 			yyVAL.columnType.Scale = yyDollar[2].LengthScaleOption.Scale
 		}
-	case 79:
+	case 88:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:607
+		//line sql.y:663
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 			yyVAL.columnType.Length = yyDollar[2].LengthScaleOption.Length
 			yyVAL.columnType.Scale = yyDollar[2].LengthScaleOption.Scale
 		}
-	case 80:
+	case 89:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:613
+		//line sql.y:669
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 			yyVAL.columnType.Length = yyDollar[2].LengthScaleOption.Length
 			yyVAL.columnType.Scale = yyDollar[2].LengthScaleOption.Scale
 		}
-	case 81:
+	case 90:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:621
+		//line sql.y:677
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
-	case 82:
+	case 91:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:625
+		//line sql.y:681
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 83:
+	case 92:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:629
+		//line sql.y:685
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 84:
+	case 93:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:633
+		//line sql.y:689
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 85:
+	case 94:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:637
+		//line sql.y:693
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
-	case 86:
+	case 95:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:643
+		//line sql.y:699
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal, Charset: yyDollar[3].str, Collate: yyDollar[4].str}
 		}
-	case 87:
+	case 96:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:647
+		//line sql.y:703
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal, Charset: yyDollar[3].str, Collate: yyDollar[4].str}
 		}
-	case 88:
+	case 97:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:651
+		//line sql.y:707
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 89:
+	case 98:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:655
+		//line sql.y:711
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 90:
+	case 99:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:659
+		//line sql.y:715
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Charset: yyDollar[2].str, Collate: yyDollar[3].str}
 		}
-	case 91:
+	case 100:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:663
+		//line sql.y:719
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Charset: yyDollar[2].str, Collate: yyDollar[3].str}
 		}
-	case 92:
+	case 101:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:667
+		//line sql.y:723
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Charset: yyDollar[2].str, Collate: yyDollar[3].str}
 		}
-	case 93:
+	case 102:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:671
+		//line sql.y:727
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Charset: yyDollar[2].str, Collate: yyDollar[3].str}
 		}
-	case 94:
+	case 103:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:675
+		//line sql.y:731
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
-	case 95:
+	case 104:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:679
+		//line sql.y:735
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
-	case 96:
+	case 105:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:683
+		//line sql.y:739
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
-	case 97:
+	case 106:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:687
+		//line sql.y:743
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
-	case 98:
+	case 107:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:691
+		//line sql.y:747
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
-	case 99:
+	case 108:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:695
+		//line sql.y:751
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), EnumValues: yyDollar[3].strs}
 		}
-	case 100:
+	case 109:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:701
+		//line sql.y:757
 		{
 			yyVAL.strs = make([]string, 0, 4)
 			yyVAL.strs = append(yyVAL.strs, "'"+string(yyDollar[1].bytes)+"'")
 		}
-	case 101:
+	case 110:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:706
+		//line sql.y:762
 		{
 			yyVAL.strs = append(yyDollar[1].strs, "'"+string(yyDollar[3].bytes)+"'")
 		}
-	case 102:
+	case 111:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:711
+		//line sql.y:767
 		{
 			yyVAL.optVal = nil
 		}
-	case 103:
+	case 112:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:715
+		//line sql.y:771
 		{
 			yyVAL.optVal = NewIntVal(yyDollar[2].bytes)
 		}
-	case 104:
+	case 113:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:720
+		//line sql.y:776
 		{
 			yyVAL.LengthScaleOption = LengthScaleOption{}
 		}
-	case 105:
+	case 114:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:724
+		//line sql.y:780
 		{
 			yyVAL.LengthScaleOption = LengthScaleOption{
 				Length: NewIntVal(yyDollar[2].bytes),
 				Scale:  NewIntVal(yyDollar[4].bytes),
 			}
 		}
-	case 106:
+	case 115:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:732
+		//line sql.y:788
 		{
 			yyVAL.LengthScaleOption = LengthScaleOption{}
 		}
-	case 107:
+	case 116:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:736
+		//line sql.y:792
 		{
 			yyVAL.LengthScaleOption = LengthScaleOption{
 				Length: NewIntVal(yyDollar[2].bytes),
 			}
 		}
-	case 108:
+	case 117:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:742
+		//line sql.y:798
 		{
 			yyVAL.LengthScaleOption = LengthScaleOption{
 				Length: NewIntVal(yyDollar[2].bytes),
 				Scale:  NewIntVal(yyDollar[4].bytes),
 			}
 		}
-	case 109:
+	case 118:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:750
+		//line sql.y:806
 		{
 			yyVAL.boolVal = BoolVal(false)
 		}
-	case 110:
+	case 119:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:754
+		//line sql.y:810
 		{
 			yyVAL.boolVal = BoolVal(true)
 		}
-	case 111:
+	case 120:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:759
+		//line sql.y:815
 		{
 			yyVAL.boolVal = BoolVal(false)
 		}
-	case 112:
+	case 121:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:763
+		//line sql.y:819
 		{
 			yyVAL.boolVal = BoolVal(true)
 		}
-	case 113:
+	case 122:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:769
+		//line sql.y:825
 		{
 			yyVAL.boolVal = BoolVal(false)
 		}
-	case 114:
+	case 123:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:773
+		//line sql.y:829
 		{
 			yyVAL.boolVal = BoolVal(false)
 		}
-	case 115:
+	case 124:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:777
+		//line sql.y:833
 		{
 			yyVAL.boolVal = BoolVal(true)
 		}
-	case 116:
+	case 125:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:782
+		//line sql.y:838
 		{
 			yyVAL.optVal = nil
 		}
-	case 117:
+	case 126:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:786
+		//line sql.y:842
 		{
 			yyVAL.optVal = NewStrVal(yyDollar[2].bytes)
 		}
-	case 118:
+	case 127:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:790
+		//line sql.y:846
 		{
 			yyVAL.optVal = NewIntVal(yyDollar[2].bytes)
 		}
-	case 119:
+	case 128:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:794
+		//line sql.y:850
 		{
 			yyVAL.optVal = NewFloatVal(yyDollar[2].bytes)
 		}
-	case 120:
+	case 129:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:798
+		//line sql.y:854
 		{
 			yyVAL.optVal = NewValArg(yyDollar[2].bytes)
 		}
-	case 121:
+	case 130:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:802
+		//line sql.y:858
 		{
 			yyVAL.optVal = NewValArg(yyDollar[2].bytes)
 		}
-	case 122:
+	case 131:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:807
+		//line sql.y:863
 		{
 			yyVAL.optVal = nil
 		}
-	case 123:
+	case 132:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:811
+		//line sql.y:867
 		{
 			yyVAL.optVal = NewValArg(yyDollar[3].bytes)
 		}
-	case 124:
+	case 133:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:816
+		//line sql.y:872
 		{
 			yyVAL.boolVal = BoolVal(false)
 		}
-	case 125:
+	case 134:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:820
+		//line sql.y:876
 		{
 			yyVAL.boolVal = BoolVal(true)
 		}
-	case 126:
+	case 135:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:825
+		//line sql.y:881
 		{
 			yyVAL.str = ""
 		}
-	case 127:
+	case 136:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:829
+		//line sql.y:885
 		{
 			yyVAL.str = string(yyDollar[3].bytes)
 		}
-	case 128:
+	case 137:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:833
+		//line sql.y:889
 		{
 			yyVAL.str = string(yyDollar[3].bytes)
 		}
-	case 129:
+	case 138:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:838
+		//line sql.y:894
 		{
 			yyVAL.str = ""
 		}
-	case 130:
+	case 139:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:842
+		//line sql.y:898
 		{
 			yyVAL.str = string(yyDollar[2].bytes)
 		}
-	case 131:
+	case 140:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:847
+		//line sql.y:903
 		{
 			yyVAL.colKeyOpt = colKeyNone
 		}
-	case 132:
+	case 141:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:851
+		//line sql.y:907
 		{
 			yyVAL.colKeyOpt = colKeyPrimary
 		}
-	case 133:
+	case 142:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:855
+		//line sql.y:911
 		{
 			yyVAL.colKeyOpt = colKey
 		}
-	case 134:
+	case 143:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:859
+		//line sql.y:915
 		{
 			yyVAL.colKeyOpt = colKeyUniqueKey
 		}
-	case 135:
+	case 144:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:863
+		//line sql.y:919
 		{
 			yyVAL.colKeyOpt = colKeyUnique
 		}
-	case 136:
+	case 145:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:868
+		//line sql.y:924
 		{
 			yyVAL.optVal = nil
 		}
-	case 137:
+	case 146:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:872
+		//line sql.y:928
 		{
 			yyVAL.optVal = NewStrVal(yyDollar[2].bytes)
 		}
-	case 138:
+	case 147:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:878
+		//line sql.y:934
 		{
 			yyVAL.indexDefinition = &IndexDefinition{Info: yyDollar[1].indexInfo, Columns: yyDollar[3].indexColumns, Using: yyDollar[5].colIdent}
 		}
-	case 139:
+	case 148:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:884
+		//line sql.y:940
 		{
 			yyVAL.indexInfo = &IndexInfo{Type: string(yyDollar[1].bytes) + " " + string(yyDollar[2].bytes), Name: NewColIdent("PRIMARY"), Primary: true, Unique: true}
 		}
-	case 140:
+	case 149:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:888
+		//line sql.y:944
 		{
 			yyVAL.indexInfo = &IndexInfo{Type: string(yyDollar[1].bytes) + " " + string(yyDollar[2].str), Name: NewColIdent(string(yyDollar[3].bytes)), Unique: true}
 		}
-	case 141:
+	case 150:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:892
+		//line sql.y:948
 		{
 			yyVAL.indexInfo = &IndexInfo{Type: string(yyDollar[1].bytes), Name: NewColIdent(string(yyDollar[2].bytes)), Unique: true}
 		}
-	case 142:
+	case 151:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:896
+		//line sql.y:952
 		{
 			yyVAL.indexInfo = &IndexInfo{Type: string(yyDollar[1].str), Name: NewColIdent(string(yyDollar[2].bytes)), Unique: false}
 		}
-	case 143:
+	case 152:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:902
+		//line sql.y:958
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 144:
+	case 153:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:906
+		//line sql.y:962
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 145:
+	case 154:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:912
+		//line sql.y:968
 		{
 			yyVAL.indexColumns = []*IndexColumn{yyDollar[1].indexColumn}
 		}
-	case 146:
+	case 155:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:916
+		//line sql.y:972
 		{
 			yyVAL.indexColumns = append(yyVAL.indexColumns, yyDollar[3].indexColumn)
 		}
-	case 147:
+	case 156:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:922
+		//line sql.y:978
 		{
 			yyVAL.indexColumn = &IndexColumn{Column: yyDollar[1].colIdent, Length: yyDollar[2].optVal}
 		}
-	case 148:
+	case 157:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:927
+		//line sql.y:983
 		{
 			yyVAL.str = ""
 		}
-	case 149:
+	case 158:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:931
+		//line sql.y:987
 		{
 			yyVAL.str = " " + string(yyDollar[1].str)
 		}
-	case 150:
+	case 159:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:935
+		//line sql.y:991
 		{
 			yyVAL.str = string(yyDollar[1].str) + ", " + string(yyDollar[3].str)
 		}
-	case 151:
+	case 160:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:943
+		//line sql.y:999
 		{
 			yyVAL.str = yyDollar[1].str
 		}
-	case 152:
+	case 161:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:947
+		//line sql.y:1003
 		{
 			yyVAL.str = yyDollar[1].str + " " + yyDollar[2].str
 		}
-	case 153:
+	case 162:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:951
+		//line sql.y:1007
 		{
 			yyVAL.str = yyDollar[1].str + "=" + yyDollar[3].str
 		}
-	case 154:
+	case 163:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:957
+		//line sql.y:1013
 		{
 			yyVAL.str = yyDollar[1].colIdent.String()
 		}
-	case 155:
+	case 164:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:961
+		//line sql.y:1017
 		{
 			yyVAL.str = "'" + string(yyDollar[1].bytes) + "'"
 		}
-	case 156:
+	case 165:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:965
+		//line sql.y:1021
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 157:
+	case 166:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:971
+		//line sql.y:1027
 		{
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName}
 		}
-	case 158:
+	case 167:
+		yyDollar = yyS[yypt-7 : yypt+1]
+		//line sql.y:1031
+		{
+			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName}
+		}
+	case 168:
+		yyDollar = yyS[yypt-7 : yypt+1]
+		//line sql.y:1035
+		{
+			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName}
+		}
+	case 169:
+		yyDollar = yyS[yypt-12 : yypt+1]
+		//line sql.y:1039
+		{
+			yyVAL.statement = &DDL{
+				Action: AddColVindexStr,
+				Table:  yyDollar[4].tableName,
+				VindexSpec: &VindexSpec{
+					Name:   yyDollar[7].colIdent,
+					Type:   yyDollar[11].colIdent,
+					Params: yyDollar[12].vindexParams,
+				},
+				VindexCols: yyDollar[9].columns,
+			}
+		}
+	case 170:
+		yyDollar = yyS[yypt-7 : yypt+1]
+		//line sql.y:1052
+		{
+			yyVAL.statement = &DDL{
+				Action: DropColVindexStr,
+				Table:  yyDollar[4].tableName,
+				VindexSpec: &VindexSpec{
+					Name: yyDollar[7].colIdent,
+				},
+			}
+		}
+	case 171:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:975
+		//line sql.y:1062
 		{
 			// Change this to a rename statement
 			yyVAL.statement = &DDL{Action: RenameStr, Table: yyDollar[4].tableName, NewName: yyDollar[7].tableName}
 		}
-	case 159:
+	case 172:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:980
+		//line sql.y:1067
 		{
 			// Rename an index can just be an alter
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName}
 		}
-	case 160:
+	case 173:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:985
+		//line sql.y:1072
 		{
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[3].tableName.ToViewName(), NewName: yyDollar[3].tableName.ToViewName()}
 		}
-	case 161:
+	case 174:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:989
+		//line sql.y:1076
 		{
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[4].tableName, PartitionSpec: yyDollar[5].partSpec}
 		}
-	case 162:
+	case 184:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:995
+		//line sql.y:1093
 		{
 			yyVAL.partSpec = &PartitionSpec{Action: ReorganizeStr, Name: yyDollar[3].colIdent, Definitions: yyDollar[6].partDefs}
 		}
-	case 163:
+	case 185:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1001
+		//line sql.y:1099
 		{
 			yyVAL.partDefs = []*PartitionDefinition{yyDollar[1].partDef}
 		}
-	case 164:
+	case 186:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1005
+		//line sql.y:1103
 		{
 			yyVAL.partDefs = append(yyDollar[1].partDefs, yyDollar[3].partDef)
 		}
-	case 165:
+	case 187:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:1011
+		//line sql.y:1109
 		{
 			yyVAL.partDef = &PartitionDefinition{Name: yyDollar[2].colIdent, Limit: yyDollar[7].expr}
 		}
-	case 166:
+	case 188:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:1015
+		//line sql.y:1113
 		{
 			yyVAL.partDef = &PartitionDefinition{Name: yyDollar[2].colIdent, Maxvalue: true}
 		}
-	case 167:
+	case 189:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1021
+		//line sql.y:1119
 		{
 			yyVAL.statement = &DDL{Action: RenameStr, Table: yyDollar[3].tableName, NewName: yyDollar[5].tableName}
 		}
-	case 168:
+	case 190:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1027
+		//line sql.y:1125
 		{
 			var exists bool
 			if yyDollar[3].byt != 0 {
@@ -3240,16 +3418,16 @@ yydefault:
 			}
 			yyVAL.statement = &DDL{Action: DropStr, Table: yyDollar[4].tableName, IfExists: exists}
 		}
-	case 169:
+	case 191:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:1035
+		//line sql.y:1133
 		{
 			// Change this to an alter statement
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[5].tableName, NewName: yyDollar[5].tableName}
 		}
-	case 170:
+	case 192:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1040
+		//line sql.y:1138
 		{
 			var exists bool
 			if yyDollar[3].byt != 0 {
@@ -3257,632 +3435,632 @@ yydefault:
 			}
 			yyVAL.statement = &DDL{Action: DropStr, Table: yyDollar[4].tableName.ToViewName(), IfExists: exists}
 		}
-	case 171:
+	case 193:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1050
+		//line sql.y:1148
 		{
 			yyVAL.statement = &DDL{Action: TruncateStr, Table: yyDollar[3].tableName}
 		}
-	case 172:
+	case 194:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1054
+		//line sql.y:1152
 		{
 			yyVAL.statement = &DDL{Action: TruncateStr, Table: yyDollar[2].tableName}
 		}
-	case 173:
+	case 195:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1059
+		//line sql.y:1157
 		{
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[3].tableName, NewName: yyDollar[3].tableName}
 		}
-	case 174:
+	case 196:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1065
+		//line sql.y:1163
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 175:
+	case 197:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1069
+		//line sql.y:1167
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 176:
+	case 198:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1073
+		//line sql.y:1171
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 177:
+	case 199:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1078
+		//line sql.y:1176
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 178:
+	case 200:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1082
+		//line sql.y:1180
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 179:
+	case 201:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1086
+		//line sql.y:1184
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 180:
+	case 202:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1090
+		//line sql.y:1188
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 181:
+	case 203:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1094
+		//line sql.y:1192
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 182:
+	case 204:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1098
+		//line sql.y:1196
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 183:
+	case 205:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1102
+		//line sql.y:1200
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 184:
+	case 206:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1106
+		//line sql.y:1204
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 185:
+	case 207:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1110
+		//line sql.y:1208
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 186:
+	case 208:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1114
+		//line sql.y:1212
 		{
 			yyVAL.statement = &Show{Scope: yyDollar[2].str, Type: string(yyDollar[3].bytes)}
 		}
-	case 187:
+	case 209:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1118
+		//line sql.y:1216
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 188:
+	case 210:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1122
+		//line sql.y:1220
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 189:
+	case 211:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1126
+		//line sql.y:1224
 		{
 			yyVAL.statement = &Show{Scope: yyDollar[2].str, Type: string(yyDollar[3].bytes)}
 		}
-	case 190:
+	case 212:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1130
+		//line sql.y:1228
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 191:
+	case 213:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1134
+		//line sql.y:1232
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes), OnTable: yyDollar[4].tableName}
 		}
-	case 192:
+	case 214:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1138
+		//line sql.y:1236
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 193:
+	case 215:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1142
+		//line sql.y:1240
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 194:
+	case 216:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1146
+		//line sql.y:1244
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 195:
+	case 217:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1150
+		//line sql.y:1248
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 196:
+	case 218:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1160
+		//line sql.y:1258
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 197:
+	case 219:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1166
+		//line sql.y:1264
 		{
 			yyVAL.str = ""
 		}
-	case 198:
+	case 220:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1170
+		//line sql.y:1268
 		{
 			yyVAL.str = SessionStr
 		}
-	case 199:
+	case 221:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1174
+		//line sql.y:1272
 		{
 			yyVAL.str = GlobalStr
 		}
-	case 200:
+	case 222:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1180
+		//line sql.y:1278
 		{
 			yyVAL.statement = &Use{DBName: yyDollar[2].tableIdent}
 		}
-	case 201:
+	case 223:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1184
+		//line sql.y:1282
 		{
 			yyVAL.statement = &Use{DBName: TableIdent{v: ""}}
 		}
-	case 202:
+	case 224:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1190
+		//line sql.y:1288
 		{
 			yyVAL.statement = &Begin{}
 		}
-	case 203:
+	case 225:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1194
+		//line sql.y:1292
 		{
 			yyVAL.statement = &Begin{}
 		}
-	case 204:
+	case 226:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1200
+		//line sql.y:1298
 		{
 			yyVAL.statement = &Commit{}
 		}
-	case 205:
+	case 227:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1206
+		//line sql.y:1304
 		{
 			yyVAL.statement = &Rollback{}
 		}
-	case 206:
+	case 228:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1212
+		//line sql.y:1310
 		{
 			yyVAL.statement = &OtherRead{}
 		}
-	case 207:
+	case 229:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1216
+		//line sql.y:1314
 		{
 			yyVAL.statement = &OtherRead{}
 		}
-	case 208:
+	case 230:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1220
+		//line sql.y:1318
 		{
 			yyVAL.statement = &OtherRead{}
 		}
-	case 209:
+	case 231:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1224
+		//line sql.y:1322
 		{
 			yyVAL.statement = &OtherAdmin{}
 		}
-	case 210:
+	case 232:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1228
+		//line sql.y:1326
 		{
 			yyVAL.statement = &OtherAdmin{}
 		}
-	case 211:
+	case 233:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1233
+		//line sql.y:1331
 		{
 			setAllowComments(yylex, true)
 		}
-	case 212:
+	case 234:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1237
+		//line sql.y:1335
 		{
 			yyVAL.bytes2 = yyDollar[2].bytes2
 			setAllowComments(yylex, false)
 		}
-	case 213:
+	case 235:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1243
+		//line sql.y:1341
 		{
 			yyVAL.bytes2 = nil
 		}
-	case 214:
+	case 236:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1247
+		//line sql.y:1345
 		{
 			yyVAL.bytes2 = append(yyDollar[1].bytes2, yyDollar[2].bytes)
 		}
-	case 215:
+	case 237:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1253
+		//line sql.y:1351
 		{
 			yyVAL.str = UnionStr
 		}
-	case 216:
+	case 238:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1257
+		//line sql.y:1355
 		{
 			yyVAL.str = UnionAllStr
 		}
-	case 217:
+	case 239:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1261
+		//line sql.y:1359
 		{
 			yyVAL.str = UnionDistinctStr
 		}
-	case 218:
+	case 240:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1266
+		//line sql.y:1364
 		{
 			yyVAL.str = ""
 		}
-	case 219:
+	case 241:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1270
+		//line sql.y:1368
 		{
 			yyVAL.str = SQLNoCacheStr
 		}
-	case 220:
+	case 242:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1274
+		//line sql.y:1372
 		{
 			yyVAL.str = SQLCacheStr
 		}
-	case 221:
+	case 243:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1279
+		//line sql.y:1377
 		{
 			yyVAL.str = ""
 		}
-	case 222:
+	case 244:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1283
+		//line sql.y:1381
 		{
 			yyVAL.str = DistinctStr
 		}
-	case 223:
+	case 245:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1288
+		//line sql.y:1386
 		{
 			yyVAL.str = ""
 		}
-	case 224:
+	case 246:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1292
+		//line sql.y:1390
 		{
 			yyVAL.str = StraightJoinHint
 		}
-	case 225:
+	case 247:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1297
+		//line sql.y:1395
 		{
 			yyVAL.selectExprs = nil
 		}
-	case 226:
+	case 248:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1301
+		//line sql.y:1399
 		{
 			yyVAL.selectExprs = yyDollar[1].selectExprs
 		}
-	case 227:
+	case 249:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1307
+		//line sql.y:1405
 		{
 			yyVAL.selectExprs = SelectExprs{yyDollar[1].selectExpr}
 		}
-	case 228:
+	case 250:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1311
+		//line sql.y:1409
 		{
 			yyVAL.selectExprs = append(yyVAL.selectExprs, yyDollar[3].selectExpr)
 		}
-	case 229:
+	case 251:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1317
+		//line sql.y:1415
 		{
 			yyVAL.selectExpr = &StarExpr{}
 		}
-	case 230:
+	case 252:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1321
+		//line sql.y:1419
 		{
 			yyVAL.selectExpr = &AliasedExpr{Expr: yyDollar[1].expr, As: yyDollar[2].colIdent}
 		}
-	case 231:
+	case 253:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1325
+		//line sql.y:1423
 		{
 			yyVAL.selectExpr = &StarExpr{TableName: TableName{Name: yyDollar[1].tableIdent}}
 		}
-	case 232:
+	case 254:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1329
+		//line sql.y:1427
 		{
 			yyVAL.selectExpr = &StarExpr{TableName: TableName{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].tableIdent}}
 		}
-	case 233:
+	case 255:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1334
+		//line sql.y:1432
 		{
 			yyVAL.colIdent = ColIdent{}
 		}
-	case 234:
+	case 256:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1338
+		//line sql.y:1436
 		{
 			yyVAL.colIdent = yyDollar[1].colIdent
 		}
-	case 235:
+	case 257:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1342
+		//line sql.y:1440
 		{
 			yyVAL.colIdent = yyDollar[2].colIdent
 		}
-	case 237:
+	case 259:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1349
+		//line sql.y:1447
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 238:
+	case 260:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1354
+		//line sql.y:1452
 		{
 			yyVAL.tableExprs = TableExprs{&AliasedTableExpr{Expr: TableName{Name: NewTableIdent("dual")}}}
 		}
-	case 239:
+	case 261:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1358
+		//line sql.y:1456
 		{
 			yyVAL.tableExprs = yyDollar[2].tableExprs
 		}
-	case 240:
+	case 262:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1364
+		//line sql.y:1462
 		{
 			yyVAL.tableExprs = TableExprs{yyDollar[1].tableExpr}
 		}
-	case 241:
+	case 263:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1368
+		//line sql.y:1466
 		{
 			yyVAL.tableExprs = append(yyVAL.tableExprs, yyDollar[3].tableExpr)
 		}
-	case 244:
+	case 266:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1378
+		//line sql.y:1476
 		{
 			yyVAL.tableExpr = yyDollar[1].aliasedTableName
 		}
-	case 245:
+	case 267:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1382
+		//line sql.y:1480
 		{
 			yyVAL.tableExpr = &AliasedTableExpr{Expr: yyDollar[1].subquery, As: yyDollar[3].tableIdent}
 		}
-	case 246:
+	case 268:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1386
+		//line sql.y:1484
 		{
 			yyVAL.tableExpr = &ParenTableExpr{Exprs: yyDollar[2].tableExprs}
 		}
-	case 247:
+	case 269:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1392
+		//line sql.y:1490
 		{
 			yyVAL.aliasedTableName = &AliasedTableExpr{Expr: yyDollar[1].tableName, As: yyDollar[2].tableIdent, Hints: yyDollar[3].indexHints}
 		}
-	case 248:
+	case 270:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:1396
+		//line sql.y:1494
 		{
 			yyVAL.aliasedTableName = &AliasedTableExpr{Expr: yyDollar[1].tableName, Partitions: yyDollar[4].partitions, As: yyDollar[6].tableIdent, Hints: yyDollar[7].indexHints}
 		}
-	case 249:
+	case 271:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1402
+		//line sql.y:1500
 		{
 			yyVAL.columns = Columns{yyDollar[1].colIdent}
 		}
-	case 250:
+	case 272:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1406
+		//line sql.y:1504
 		{
 			yyVAL.columns = append(yyVAL.columns, yyDollar[3].colIdent)
 		}
-	case 251:
+	case 273:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1412
+		//line sql.y:1510
 		{
 			yyVAL.partitions = Partitions{yyDollar[1].colIdent}
 		}
-	case 252:
+	case 274:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1416
+		//line sql.y:1514
 		{
 			yyVAL.partitions = append(yyVAL.partitions, yyDollar[3].colIdent)
 		}
-	case 253:
+	case 275:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1429
+		//line sql.y:1527
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr, Condition: yyDollar[4].joinCondition}
 		}
-	case 254:
+	case 276:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1433
+		//line sql.y:1531
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr, Condition: yyDollar[4].joinCondition}
 		}
-	case 255:
+	case 277:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1437
+		//line sql.y:1535
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr, Condition: yyDollar[4].joinCondition}
 		}
-	case 256:
+	case 278:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1441
+		//line sql.y:1539
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr}
 		}
-	case 257:
+	case 279:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1447
+		//line sql.y:1545
 		{
 			yyVAL.joinCondition = JoinCondition{On: yyDollar[2].expr}
 		}
-	case 258:
+	case 280:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1449
+		//line sql.y:1547
 		{
 			yyVAL.joinCondition = JoinCondition{Using: yyDollar[3].columns}
 		}
-	case 259:
+	case 281:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1453
+		//line sql.y:1551
 		{
 		}
-	case 260:
+	case 282:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1455
+		//line sql.y:1553
 		{
 			yyVAL.joinCondition = yyDollar[1].joinCondition
 		}
-	case 261:
+	case 283:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1459
+		//line sql.y:1557
 		{
 		}
-	case 262:
+	case 284:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1461
+		//line sql.y:1559
 		{
 			yyVAL.joinCondition = JoinCondition{On: yyDollar[2].expr}
 		}
-	case 263:
+	case 285:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1464
+		//line sql.y:1562
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 264:
+	case 286:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1466
+		//line sql.y:1564
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 265:
+	case 287:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1469
+		//line sql.y:1567
 		{
 			yyVAL.tableIdent = NewTableIdent("")
 		}
-	case 266:
+	case 288:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1473
+		//line sql.y:1571
 		{
 			yyVAL.tableIdent = yyDollar[1].tableIdent
 		}
-	case 267:
+	case 289:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1477
+		//line sql.y:1575
 		{
 			yyVAL.tableIdent = yyDollar[2].tableIdent
 		}
-	case 269:
+	case 291:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1484
+		//line sql.y:1582
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 270:
+	case 292:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1490
+		//line sql.y:1588
 		{
 			yyVAL.str = JoinStr
 		}
-	case 271:
+	case 293:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1494
+		//line sql.y:1592
 		{
 			yyVAL.str = JoinStr
 		}
-	case 272:
+	case 294:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1498
+		//line sql.y:1596
 		{
 			yyVAL.str = JoinStr
 		}
-	case 273:
+	case 295:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1504
+		//line sql.y:1602
 		{
 			yyVAL.str = StraightJoinStr
 		}
-	case 274:
+	case 296:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1510
+		//line sql.y:1608
 		{
 			yyVAL.str = LeftJoinStr
 		}
-	case 275:
+	case 297:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1514
+		//line sql.y:1612
 		{
 			yyVAL.str = LeftJoinStr
 		}
-	case 276:
+	case 298:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1518
+		//line sql.y:1616
 		{
 			yyVAL.str = RightJoinStr
 		}
-	case 277:
+	case 299:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1522
+		//line sql.y:1620
 		{
 			yyVAL.str = RightJoinStr
 		}
-	case 278:
+	case 300:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1528
+		//line sql.y:1626
 		{
 			yyVAL.str = NaturalJoinStr
 		}
-	case 279:
+	case 301:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1532
+		//line sql.y:1630
 		{
 			if yyDollar[2].str == LeftJoinStr {
 				yyVAL.str = NaturalLeftJoinStr
@@ -3890,453 +4068,453 @@ yydefault:
 				yyVAL.str = NaturalRightJoinStr
 			}
 		}
-	case 280:
+	case 302:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1542
+		//line sql.y:1640
 		{
 			yyVAL.tableName = yyDollar[2].tableName
 		}
-	case 281:
+	case 303:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1546
+		//line sql.y:1644
 		{
 			yyVAL.tableName = yyDollar[1].tableName
 		}
-	case 282:
+	case 304:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1552
+		//line sql.y:1650
 		{
 			yyVAL.tableName = TableName{Name: yyDollar[1].tableIdent}
 		}
-	case 283:
+	case 305:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1556
+		//line sql.y:1654
 		{
 			yyVAL.tableName = TableName{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].tableIdent}
 		}
-	case 284:
+	case 306:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1561
+		//line sql.y:1659
 		{
 			yyVAL.indexHints = nil
 		}
-	case 285:
+	case 307:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1565
+		//line sql.y:1663
 		{
 			yyVAL.indexHints = &IndexHints{Type: UseStr, Indexes: yyDollar[4].columns}
 		}
-	case 286:
+	case 308:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1569
+		//line sql.y:1667
 		{
 			yyVAL.indexHints = &IndexHints{Type: IgnoreStr, Indexes: yyDollar[4].columns}
 		}
-	case 287:
+	case 309:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1573
+		//line sql.y:1671
 		{
 			yyVAL.indexHints = &IndexHints{Type: ForceStr, Indexes: yyDollar[4].columns}
 		}
-	case 288:
+	case 310:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1578
+		//line sql.y:1676
 		{
 			yyVAL.expr = nil
 		}
-	case 289:
+	case 311:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1582
+		//line sql.y:1680
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 290:
+	case 312:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1588
+		//line sql.y:1686
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 291:
+	case 313:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1592
+		//line sql.y:1690
 		{
 			yyVAL.expr = &AndExpr{Left: yyDollar[1].expr, Right: yyDollar[3].expr}
 		}
-	case 292:
+	case 314:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1596
+		//line sql.y:1694
 		{
 			yyVAL.expr = &OrExpr{Left: yyDollar[1].expr, Right: yyDollar[3].expr}
 		}
-	case 293:
+	case 315:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1600
+		//line sql.y:1698
 		{
 			yyVAL.expr = &NotExpr{Expr: yyDollar[2].expr}
 		}
-	case 294:
+	case 316:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1604
+		//line sql.y:1702
 		{
 			yyVAL.expr = &IsExpr{Operator: yyDollar[3].str, Expr: yyDollar[1].expr}
 		}
-	case 295:
+	case 317:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1608
+		//line sql.y:1706
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 296:
+	case 318:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1612
+		//line sql.y:1710
 		{
 			yyVAL.expr = &Default{ColName: yyDollar[2].str}
 		}
-	case 297:
+	case 319:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1618
+		//line sql.y:1716
 		{
 			yyVAL.str = ""
 		}
-	case 298:
+	case 320:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1622
+		//line sql.y:1720
 		{
 			yyVAL.str = string(yyDollar[2].bytes)
 		}
-	case 299:
+	case 321:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1628
+		//line sql.y:1726
 		{
 			yyVAL.boolVal = BoolVal(true)
 		}
-	case 300:
+	case 322:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1632
+		//line sql.y:1730
 		{
 			yyVAL.boolVal = BoolVal(false)
 		}
-	case 301:
+	case 323:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1638
+		//line sql.y:1736
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: yyDollar[2].str, Right: yyDollar[3].expr}
 		}
-	case 302:
+	case 324:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1642
+		//line sql.y:1740
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: InStr, Right: yyDollar[3].colTuple}
 		}
-	case 303:
+	case 325:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1646
+		//line sql.y:1744
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: NotInStr, Right: yyDollar[4].colTuple}
 		}
-	case 304:
+	case 326:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1650
+		//line sql.y:1748
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: LikeStr, Right: yyDollar[3].expr, Escape: yyDollar[4].expr}
 		}
-	case 305:
+	case 327:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1654
+		//line sql.y:1752
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: NotLikeStr, Right: yyDollar[4].expr, Escape: yyDollar[5].expr}
 		}
-	case 306:
+	case 328:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1658
+		//line sql.y:1756
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: RegexpStr, Right: yyDollar[3].expr}
 		}
-	case 307:
+	case 329:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1662
+		//line sql.y:1760
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: NotRegexpStr, Right: yyDollar[4].expr}
 		}
-	case 308:
+	case 330:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1666
+		//line sql.y:1764
 		{
 			yyVAL.expr = &RangeCond{Left: yyDollar[1].expr, Operator: BetweenStr, From: yyDollar[3].expr, To: yyDollar[5].expr}
 		}
-	case 309:
+	case 331:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:1670
+		//line sql.y:1768
 		{
 			yyVAL.expr = &RangeCond{Left: yyDollar[1].expr, Operator: NotBetweenStr, From: yyDollar[4].expr, To: yyDollar[6].expr}
 		}
-	case 310:
+	case 332:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1674
+		//line sql.y:1772
 		{
 			yyVAL.expr = &ExistsExpr{Subquery: yyDollar[2].subquery}
 		}
-	case 311:
+	case 333:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1680
+		//line sql.y:1778
 		{
 			yyVAL.str = IsNullStr
 		}
-	case 312:
+	case 334:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1684
+		//line sql.y:1782
 		{
 			yyVAL.str = IsNotNullStr
 		}
-	case 313:
+	case 335:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1688
+		//line sql.y:1786
 		{
 			yyVAL.str = IsTrueStr
 		}
-	case 314:
+	case 336:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1692
+		//line sql.y:1790
 		{
 			yyVAL.str = IsNotTrueStr
 		}
-	case 315:
+	case 337:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1696
+		//line sql.y:1794
 		{
 			yyVAL.str = IsFalseStr
 		}
-	case 316:
+	case 338:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1700
+		//line sql.y:1798
 		{
 			yyVAL.str = IsNotFalseStr
 		}
-	case 317:
+	case 339:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1706
+		//line sql.y:1804
 		{
 			yyVAL.str = EqualStr
 		}
-	case 318:
+	case 340:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1710
+		//line sql.y:1808
 		{
 			yyVAL.str = LessThanStr
 		}
-	case 319:
+	case 341:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1714
+		//line sql.y:1812
 		{
 			yyVAL.str = GreaterThanStr
 		}
-	case 320:
+	case 342:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1718
+		//line sql.y:1816
 		{
 			yyVAL.str = LessEqualStr
 		}
-	case 321:
+	case 343:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1722
+		//line sql.y:1820
 		{
 			yyVAL.str = GreaterEqualStr
 		}
-	case 322:
+	case 344:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1726
+		//line sql.y:1824
 		{
 			yyVAL.str = NotEqualStr
 		}
-	case 323:
+	case 345:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1730
+		//line sql.y:1828
 		{
 			yyVAL.str = NullSafeEqualStr
 		}
-	case 324:
+	case 346:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1735
+		//line sql.y:1833
 		{
 			yyVAL.expr = nil
 		}
-	case 325:
+	case 347:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1739
+		//line sql.y:1837
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 326:
+	case 348:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1745
+		//line sql.y:1843
 		{
 			yyVAL.colTuple = yyDollar[1].valTuple
 		}
-	case 327:
+	case 349:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1749
+		//line sql.y:1847
 		{
 			yyVAL.colTuple = yyDollar[1].subquery
 		}
-	case 328:
+	case 350:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1753
+		//line sql.y:1851
 		{
 			yyVAL.colTuple = ListArg(yyDollar[1].bytes)
 		}
-	case 329:
+	case 351:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1759
+		//line sql.y:1857
 		{
 			yyVAL.subquery = &Subquery{yyDollar[2].selStmt}
 		}
-	case 330:
+	case 352:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1765
+		//line sql.y:1863
 		{
 			yyVAL.exprs = Exprs{yyDollar[1].expr}
 		}
-	case 331:
+	case 353:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1769
+		//line sql.y:1867
 		{
 			yyVAL.exprs = append(yyDollar[1].exprs, yyDollar[3].expr)
 		}
-	case 332:
+	case 354:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1775
+		//line sql.y:1873
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 333:
+	case 355:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1779
+		//line sql.y:1877
 		{
 			yyVAL.expr = yyDollar[1].boolVal
 		}
-	case 334:
+	case 356:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1783
+		//line sql.y:1881
 		{
 			yyVAL.expr = yyDollar[1].colName
 		}
-	case 335:
+	case 357:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1787
+		//line sql.y:1885
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 336:
+	case 358:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1791
+		//line sql.y:1889
 		{
 			yyVAL.expr = yyDollar[1].subquery
 		}
-	case 337:
+	case 359:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1795
+		//line sql.y:1893
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: BitAndStr, Right: yyDollar[3].expr}
 		}
-	case 338:
+	case 360:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1799
+		//line sql.y:1897
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: BitOrStr, Right: yyDollar[3].expr}
 		}
-	case 339:
+	case 361:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1803
+		//line sql.y:1901
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: BitXorStr, Right: yyDollar[3].expr}
 		}
-	case 340:
+	case 362:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1807
+		//line sql.y:1905
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: PlusStr, Right: yyDollar[3].expr}
 		}
-	case 341:
+	case 363:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1811
+		//line sql.y:1909
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: MinusStr, Right: yyDollar[3].expr}
 		}
-	case 342:
+	case 364:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1815
+		//line sql.y:1913
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: MultStr, Right: yyDollar[3].expr}
 		}
-	case 343:
+	case 365:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1819
+		//line sql.y:1917
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: DivStr, Right: yyDollar[3].expr}
 		}
-	case 344:
+	case 366:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1823
+		//line sql.y:1921
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: IntDivStr, Right: yyDollar[3].expr}
 		}
-	case 345:
+	case 367:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1827
+		//line sql.y:1925
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ModStr, Right: yyDollar[3].expr}
 		}
-	case 346:
+	case 368:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1831
+		//line sql.y:1929
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ModStr, Right: yyDollar[3].expr}
 		}
-	case 347:
+	case 369:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1835
+		//line sql.y:1933
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ShiftLeftStr, Right: yyDollar[3].expr}
 		}
-	case 348:
+	case 370:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1839
+		//line sql.y:1937
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ShiftRightStr, Right: yyDollar[3].expr}
 		}
-	case 349:
+	case 371:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1843
+		//line sql.y:1941
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].colName, Operator: JSONExtractOp, Right: yyDollar[3].expr}
 		}
-	case 350:
+	case 372:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1847
+		//line sql.y:1945
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].colName, Operator: JSONUnquoteExtractOp, Right: yyDollar[3].expr}
 		}
-	case 351:
+	case 373:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1851
+		//line sql.y:1949
 		{
 			yyVAL.expr = &CollateExpr{Expr: yyDollar[1].expr, Charset: yyDollar[3].str}
 		}
-	case 352:
+	case 374:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1855
+		//line sql.y:1953
 		{
 			yyVAL.expr = &UnaryExpr{Operator: BinaryStr, Expr: yyDollar[2].expr}
 		}
-	case 353:
+	case 375:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1859
+		//line sql.y:1957
 		{
 			yyVAL.expr = &UnaryExpr{Operator: UBinaryStr, Expr: yyDollar[2].expr}
 		}
-	case 354:
+	case 376:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1863
+		//line sql.y:1961
 		{
 			if num, ok := yyDollar[2].expr.(*SQLVal); ok && num.Type == IntVal {
 				yyVAL.expr = num
@@ -4344,9 +4522,9 @@ yydefault:
 				yyVAL.expr = &UnaryExpr{Operator: UPlusStr, Expr: yyDollar[2].expr}
 			}
 		}
-	case 355:
+	case 377:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1871
+		//line sql.y:1969
 		{
 			if num, ok := yyDollar[2].expr.(*SQLVal); ok && num.Type == IntVal {
 				// Handle double negative
@@ -4360,21 +4538,21 @@ yydefault:
 				yyVAL.expr = &UnaryExpr{Operator: UMinusStr, Expr: yyDollar[2].expr}
 			}
 		}
-	case 356:
+	case 378:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1885
+		//line sql.y:1983
 		{
 			yyVAL.expr = &UnaryExpr{Operator: TildaStr, Expr: yyDollar[2].expr}
 		}
-	case 357:
+	case 379:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1889
+		//line sql.y:1987
 		{
 			yyVAL.expr = &UnaryExpr{Operator: BangStr, Expr: yyDollar[2].expr}
 		}
-	case 358:
+	case 380:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1893
+		//line sql.y:1991
 		{
 			// This rule prevents the usage of INTERVAL
 			// as a function. If support is needed for that,
@@ -4382,395 +4560,395 @@ yydefault:
 			// will be non-trivial because of grammar conflicts.
 			yyVAL.expr = &IntervalExpr{Expr: yyDollar[2].expr, Unit: yyDollar[3].colIdent.String()}
 		}
-	case 363:
+	case 385:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1911
+		//line sql.y:2009
 		{
 			yyVAL.expr = &FuncExpr{Name: yyDollar[1].colIdent, Exprs: yyDollar[3].selectExprs}
 		}
-	case 364:
+	case 386:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1915
+		//line sql.y:2013
 		{
 			yyVAL.expr = &FuncExpr{Name: yyDollar[1].colIdent, Distinct: true, Exprs: yyDollar[4].selectExprs}
 		}
-	case 365:
+	case 387:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:1919
+		//line sql.y:2017
 		{
 			yyVAL.expr = &FuncExpr{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].colIdent, Exprs: yyDollar[5].selectExprs}
 		}
-	case 366:
+	case 388:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1929
+		//line sql.y:2027
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("left"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 367:
+	case 389:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1933
+		//line sql.y:2031
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("right"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 368:
+	case 390:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:1937
+		//line sql.y:2035
 		{
 			yyVAL.expr = &ConvertExpr{Expr: yyDollar[3].expr, Type: yyDollar[5].convertType}
 		}
-	case 369:
+	case 391:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:1941
+		//line sql.y:2039
 		{
 			yyVAL.expr = &ConvertExpr{Expr: yyDollar[3].expr, Type: yyDollar[5].convertType}
 		}
-	case 370:
+	case 392:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:1945
+		//line sql.y:2043
 		{
 			yyVAL.expr = &ConvertUsingExpr{Expr: yyDollar[3].expr, Type: yyDollar[5].str}
 		}
-	case 371:
+	case 393:
 		yyDollar = yyS[yypt-9 : yypt+1]
-		//line sql.y:1949
+		//line sql.y:2047
 		{
 			yyVAL.expr = &MatchExpr{Columns: yyDollar[3].selectExprs, Expr: yyDollar[7].expr, Option: yyDollar[8].str}
 		}
-	case 372:
+	case 394:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:1953
+		//line sql.y:2051
 		{
 			yyVAL.expr = &GroupConcatExpr{Distinct: yyDollar[3].str, Exprs: yyDollar[4].selectExprs, OrderBy: yyDollar[5].orderBy, Separator: yyDollar[6].str}
 		}
-	case 373:
+	case 395:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1957
+		//line sql.y:2055
 		{
 			yyVAL.expr = &CaseExpr{Expr: yyDollar[2].expr, Whens: yyDollar[3].whens, Else: yyDollar[4].expr}
 		}
-	case 374:
+	case 396:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1961
+		//line sql.y:2059
 		{
 			yyVAL.expr = &ValuesFuncExpr{Name: yyDollar[3].colIdent}
 		}
-	case 375:
+	case 397:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1971
+		//line sql.y:2069
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("current_timestamp")}
 		}
-	case 376:
+	case 398:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1975
+		//line sql.y:2073
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("utc_timestamp")}
 		}
-	case 377:
+	case 399:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1979
+		//line sql.y:2077
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("utc_time")}
 		}
-	case 378:
+	case 400:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1983
+		//line sql.y:2081
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("utc_date")}
 		}
-	case 379:
+	case 401:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1988
+		//line sql.y:2086
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("localtime")}
 		}
-	case 380:
+	case 402:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1993
+		//line sql.y:2091
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("localtimestamp")}
 		}
-	case 381:
+	case 403:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1998
+		//line sql.y:2096
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("current_date")}
 		}
-	case 382:
+	case 404:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2003
+		//line sql.y:2101
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("current_time")}
 		}
-	case 385:
+	case 407:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2017
+		//line sql.y:2115
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("if"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 386:
+	case 408:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2021
+		//line sql.y:2119
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("database"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 387:
+	case 409:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2025
+		//line sql.y:2123
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("mod"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 388:
+	case 410:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2029
+		//line sql.y:2127
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("replace"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 389:
+	case 411:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2035
+		//line sql.y:2133
 		{
 			yyVAL.str = ""
 		}
-	case 390:
+	case 412:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2039
+		//line sql.y:2137
 		{
 			yyVAL.str = BooleanModeStr
 		}
-	case 391:
+	case 413:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2043
+		//line sql.y:2141
 		{
 			yyVAL.str = NaturalLanguageModeStr
 		}
-	case 392:
+	case 414:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:2047
+		//line sql.y:2145
 		{
 			yyVAL.str = NaturalLanguageModeWithQueryExpansionStr
 		}
-	case 393:
+	case 415:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2051
+		//line sql.y:2149
 		{
 			yyVAL.str = QueryExpansionStr
 		}
-	case 394:
+	case 416:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2057
+		//line sql.y:2155
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 395:
+	case 417:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2061
+		//line sql.y:2159
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 396:
+	case 418:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2067
+		//line sql.y:2165
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 397:
+	case 419:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2071
+		//line sql.y:2169
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal, Charset: yyDollar[3].str, Operator: CharacterSetStr}
 		}
-	case 398:
+	case 420:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2075
+		//line sql.y:2173
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal, Charset: string(yyDollar[3].bytes)}
 		}
-	case 399:
+	case 421:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2079
+		//line sql.y:2177
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 400:
+	case 422:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2083
+		//line sql.y:2181
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 401:
+	case 423:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2087
+		//line sql.y:2185
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 			yyVAL.convertType.Length = yyDollar[2].LengthScaleOption.Length
 			yyVAL.convertType.Scale = yyDollar[2].LengthScaleOption.Scale
 		}
-	case 402:
+	case 424:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2093
+		//line sql.y:2191
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 403:
+	case 425:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2097
+		//line sql.y:2195
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 404:
+	case 426:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2101
+		//line sql.y:2199
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 405:
+	case 427:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2105
+		//line sql.y:2203
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 406:
+	case 428:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2109
+		//line sql.y:2207
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 407:
+	case 429:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2113
+		//line sql.y:2211
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 408:
+	case 430:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2117
+		//line sql.y:2215
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 409:
+	case 431:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2122
+		//line sql.y:2220
 		{
 			yyVAL.expr = nil
 		}
-	case 410:
+	case 432:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2126
+		//line sql.y:2224
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 411:
+	case 433:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2131
+		//line sql.y:2229
 		{
 			yyVAL.str = string("")
 		}
-	case 412:
+	case 434:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2135
+		//line sql.y:2233
 		{
 			yyVAL.str = " separator '" + string(yyDollar[2].bytes) + "'"
 		}
-	case 413:
+	case 435:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2141
+		//line sql.y:2239
 		{
 			yyVAL.whens = []*When{yyDollar[1].when}
 		}
-	case 414:
+	case 436:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2145
+		//line sql.y:2243
 		{
 			yyVAL.whens = append(yyDollar[1].whens, yyDollar[2].when)
 		}
-	case 415:
+	case 437:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2151
+		//line sql.y:2249
 		{
 			yyVAL.when = &When{Cond: yyDollar[2].expr, Val: yyDollar[4].expr}
 		}
-	case 416:
+	case 438:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2156
+		//line sql.y:2254
 		{
 			yyVAL.expr = nil
 		}
-	case 417:
+	case 439:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2160
+		//line sql.y:2258
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 418:
+	case 440:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2166
+		//line sql.y:2264
 		{
 			yyVAL.colName = &ColName{Name: yyDollar[1].colIdent}
 		}
-	case 419:
+	case 441:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2170
+		//line sql.y:2268
 		{
 			yyVAL.colName = &ColName{Qualifier: TableName{Name: yyDollar[1].tableIdent}, Name: yyDollar[3].colIdent}
 		}
-	case 420:
+	case 442:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:2174
+		//line sql.y:2272
 		{
 			yyVAL.colName = &ColName{Qualifier: TableName{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].tableIdent}, Name: yyDollar[5].colIdent}
 		}
-	case 421:
+	case 443:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2180
+		//line sql.y:2278
 		{
 			yyVAL.expr = NewStrVal(yyDollar[1].bytes)
 		}
-	case 422:
+	case 444:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2184
+		//line sql.y:2282
 		{
 			yyVAL.expr = NewHexVal(yyDollar[1].bytes)
 		}
-	case 423:
+	case 445:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2188
+		//line sql.y:2286
 		{
 			yyVAL.expr = NewBitVal(yyDollar[1].bytes)
 		}
-	case 424:
+	case 446:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2192
+		//line sql.y:2290
 		{
 			yyVAL.expr = NewIntVal(yyDollar[1].bytes)
 		}
-	case 425:
+	case 447:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2196
+		//line sql.y:2294
 		{
 			yyVAL.expr = NewFloatVal(yyDollar[1].bytes)
 		}
-	case 426:
+	case 448:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2200
+		//line sql.y:2298
 		{
 			yyVAL.expr = NewHexNum(yyDollar[1].bytes)
 		}
-	case 427:
+	case 449:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2204
+		//line sql.y:2302
 		{
 			yyVAL.expr = NewValArg(yyDollar[1].bytes)
 		}
-	case 428:
+	case 450:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2208
+		//line sql.y:2306
 		{
 			yyVAL.expr = &NullVal{}
 		}
-	case 429:
+	case 451:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2214
+		//line sql.y:2312
 		{
 			// TODO(sougou): Deprecate this construct.
 			if yyDollar[1].colIdent.Lowered() != "value" {
@@ -4779,239 +4957,239 @@ yydefault:
 			}
 			yyVAL.expr = NewIntVal([]byte("1"))
 		}
-	case 430:
+	case 452:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2223
+		//line sql.y:2321
 		{
 			yyVAL.expr = NewIntVal(yyDollar[1].bytes)
 		}
-	case 431:
+	case 453:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2227
+		//line sql.y:2325
 		{
 			yyVAL.expr = NewValArg(yyDollar[1].bytes)
 		}
-	case 432:
+	case 454:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2232
+		//line sql.y:2330
 		{
 			yyVAL.exprs = nil
 		}
-	case 433:
+	case 455:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2236
+		//line sql.y:2334
 		{
 			yyVAL.exprs = yyDollar[3].exprs
 		}
-	case 434:
+	case 456:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2241
+		//line sql.y:2339
 		{
 			yyVAL.expr = nil
 		}
-	case 435:
+	case 457:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2245
+		//line sql.y:2343
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 436:
+	case 458:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2250
+		//line sql.y:2348
 		{
 			yyVAL.orderBy = nil
 		}
-	case 437:
+	case 459:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2254
+		//line sql.y:2352
 		{
 			yyVAL.orderBy = yyDollar[3].orderBy
 		}
-	case 438:
+	case 460:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2260
+		//line sql.y:2358
 		{
 			yyVAL.orderBy = OrderBy{yyDollar[1].order}
 		}
-	case 439:
+	case 461:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2264
+		//line sql.y:2362
 		{
 			yyVAL.orderBy = append(yyDollar[1].orderBy, yyDollar[3].order)
 		}
-	case 440:
+	case 462:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2270
+		//line sql.y:2368
 		{
 			yyVAL.order = &Order{Expr: yyDollar[1].expr, Direction: yyDollar[2].str}
 		}
-	case 441:
+	case 463:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2275
+		//line sql.y:2373
 		{
 			yyVAL.str = AscScr
 		}
-	case 442:
+	case 464:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2279
+		//line sql.y:2377
 		{
 			yyVAL.str = AscScr
 		}
-	case 443:
+	case 465:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2283
+		//line sql.y:2381
 		{
 			yyVAL.str = DescScr
 		}
-	case 444:
+	case 466:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2288
+		//line sql.y:2386
 		{
 			yyVAL.limit = nil
 		}
-	case 445:
+	case 467:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2292
+		//line sql.y:2390
 		{
 			yyVAL.limit = &Limit{Rowcount: yyDollar[2].expr}
 		}
-	case 446:
+	case 468:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2296
+		//line sql.y:2394
 		{
 			yyVAL.limit = &Limit{Offset: yyDollar[2].expr, Rowcount: yyDollar[4].expr}
 		}
-	case 447:
+	case 469:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2300
+		//line sql.y:2398
 		{
 			yyVAL.limit = &Limit{Offset: yyDollar[4].expr, Rowcount: yyDollar[2].expr}
 		}
-	case 448:
+	case 470:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2305
+		//line sql.y:2403
 		{
 			yyVAL.str = ""
 		}
-	case 449:
+	case 471:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2309
+		//line sql.y:2407
 		{
 			yyVAL.str = ForUpdateStr
 		}
-	case 450:
+	case 472:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2313
+		//line sql.y:2411
 		{
 			yyVAL.str = ShareModeStr
 		}
-	case 451:
+	case 473:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2326
+		//line sql.y:2424
 		{
 			yyVAL.ins = &Insert{Rows: yyDollar[2].values}
 		}
-	case 452:
+	case 474:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2330
+		//line sql.y:2428
 		{
 			yyVAL.ins = &Insert{Rows: yyDollar[1].selStmt}
 		}
-	case 453:
+	case 475:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2334
+		//line sql.y:2432
 		{
 			// Drop the redundant parenthesis.
 			yyVAL.ins = &Insert{Rows: yyDollar[2].selStmt}
 		}
-	case 454:
+	case 476:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:2339
+		//line sql.y:2437
 		{
 			yyVAL.ins = &Insert{Columns: yyDollar[2].columns, Rows: yyDollar[5].values}
 		}
-	case 455:
+	case 477:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2343
+		//line sql.y:2441
 		{
 			yyVAL.ins = &Insert{Columns: yyDollar[2].columns, Rows: yyDollar[4].selStmt}
 		}
-	case 456:
+	case 478:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:2347
+		//line sql.y:2445
 		{
 			// Drop the redundant parenthesis.
 			yyVAL.ins = &Insert{Columns: yyDollar[2].columns, Rows: yyDollar[5].selStmt}
 		}
-	case 457:
+	case 479:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2354
+		//line sql.y:2452
 		{
 			yyVAL.columns = Columns{yyDollar[1].colIdent}
 		}
-	case 458:
+	case 480:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2358
+		//line sql.y:2456
 		{
 			yyVAL.columns = Columns{yyDollar[3].colIdent}
 		}
-	case 459:
+	case 481:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2362
+		//line sql.y:2460
 		{
 			yyVAL.columns = append(yyVAL.columns, yyDollar[3].colIdent)
 		}
-	case 460:
+	case 482:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:2366
+		//line sql.y:2464
 		{
 			yyVAL.columns = append(yyVAL.columns, yyDollar[5].colIdent)
 		}
-	case 461:
+	case 483:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2371
+		//line sql.y:2469
 		{
 			yyVAL.updateExprs = nil
 		}
-	case 462:
+	case 484:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:2375
+		//line sql.y:2473
 		{
 			yyVAL.updateExprs = yyDollar[5].updateExprs
 		}
-	case 463:
+	case 485:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2381
+		//line sql.y:2479
 		{
 			yyVAL.values = Values{yyDollar[1].valTuple}
 		}
-	case 464:
+	case 486:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2385
+		//line sql.y:2483
 		{
 			yyVAL.values = append(yyDollar[1].values, yyDollar[3].valTuple)
 		}
-	case 465:
+	case 487:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2391
+		//line sql.y:2489
 		{
 			yyVAL.valTuple = yyDollar[1].valTuple
 		}
-	case 466:
+	case 488:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2395
+		//line sql.y:2493
 		{
 			yyVAL.valTuple = ValTuple{}
 		}
-	case 467:
+	case 489:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2401
+		//line sql.y:2499
 		{
 			yyVAL.valTuple = ValTuple(yyDollar[2].exprs)
 		}
-	case 468:
+	case 490:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2407
+		//line sql.y:2505
 		{
 			if len(yyDollar[1].valTuple) == 1 {
 				yyVAL.expr = &ParenExpr{yyDollar[1].valTuple[0]}
@@ -5019,258 +5197,252 @@ yydefault:
 				yyVAL.expr = yyDollar[1].valTuple
 			}
 		}
-	case 469:
+	case 491:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2417
+		//line sql.y:2515
 		{
 			yyVAL.updateExprs = UpdateExprs{yyDollar[1].updateExpr}
 		}
-	case 470:
+	case 492:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2421
+		//line sql.y:2519
 		{
 			yyVAL.updateExprs = append(yyDollar[1].updateExprs, yyDollar[3].updateExpr)
 		}
-	case 471:
+	case 493:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2427
+		//line sql.y:2525
 		{
 			yyVAL.updateExpr = &UpdateExpr{Name: yyDollar[1].colName, Expr: yyDollar[3].expr}
 		}
-	case 474:
+	case 496:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2436
+		//line sql.y:2534
 		{
 			yyVAL.byt = 0
 		}
-	case 475:
+	case 497:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2438
+		//line sql.y:2536
 		{
 			yyVAL.byt = 1
 		}
-	case 476:
+	case 498:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2441
+		//line sql.y:2539
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 477:
+	case 499:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2443
+		//line sql.y:2541
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 478:
+	case 500:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2446
+		//line sql.y:2544
 		{
 			yyVAL.str = ""
 		}
-	case 479:
+	case 501:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2448
+		//line sql.y:2546
 		{
 			yyVAL.str = IgnoreStr
 		}
-	case 480:
-		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2452
-		{
-			yyVAL.empty = struct{}{}
-		}
-	case 481:
+	case 502:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2454
+		//line sql.y:2550
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 482:
+	case 503:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2456
+		//line sql.y:2552
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 483:
+	case 504:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2458
+		//line sql.y:2554
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 484:
+	case 505:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2460
+		//line sql.y:2556
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 485:
+	case 506:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2462
+		//line sql.y:2558
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 486:
+	case 507:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2464
+		//line sql.y:2560
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 487:
+	case 508:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2466
+		//line sql.y:2562
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 488:
+	case 509:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2468
+		//line sql.y:2564
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 489:
+	case 510:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2470
+		//line sql.y:2566
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 490:
+	case 511:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2472
+		//line sql.y:2568
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 491:
+	case 512:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2475
+		//line sql.y:2571
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 492:
+	case 513:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2477
+		//line sql.y:2573
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 493:
+	case 514:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2479
+		//line sql.y:2575
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 494:
+	case 515:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2483
+		//line sql.y:2579
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 495:
+	case 516:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2485
+		//line sql.y:2581
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 496:
+	case 517:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2488
+		//line sql.y:2584
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 497:
+	case 518:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2490
+		//line sql.y:2586
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 498:
+	case 519:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2492
+		//line sql.y:2588
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 499:
+	case 520:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2495
+		//line sql.y:2591
 		{
 			yyVAL.colIdent = ColIdent{}
 		}
-	case 500:
+	case 521:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2497
+		//line sql.y:2593
 		{
 			yyVAL.colIdent = yyDollar[2].colIdent
 		}
-	case 501:
+	case 522:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2501
+		//line sql.y:2597
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 502:
+	case 523:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2505
+		//line sql.y:2601
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 504:
+	case 525:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2512
+		//line sql.y:2608
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 505:
+	case 526:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2518
+		//line sql.y:2614
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 506:
+	case 527:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2522
+		//line sql.y:2618
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 508:
+	case 529:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2529
+		//line sql.y:2625
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 674:
+	case 699:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2720
+		//line sql.y:2820
 		{
 			if incNesting(yylex) {
 				yylex.Error("max nesting level reached")
 				return 1
 			}
 		}
-	case 675:
+	case 700:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2729
+		//line sql.y:2829
 		{
 			decNesting(yylex)
 		}
-	case 676:
+	case 701:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2734
+		//line sql.y:2834
 		{
 			forceEOF(yylex)
 		}
-	case 677:
+	case 702:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2739
+		//line sql.y:2839
 		{
 			forceEOF(yylex)
 		}
-	case 678:
+	case 703:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2743
+		//line sql.y:2843
 		{
 			forceEOF(yylex)
 		}
-	case 679:
+	case 704:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2747
+		//line sql.y:2847
 		{
 			forceEOF(yylex)
 		}
diff --git a/go/vt/sqlparser/sql.y b/go/vt/sqlparser/sql.y
index 8545ef47f0d..fb80c87cdd5 100644
--- a/go/vt/sqlparser/sql.y
+++ b/go/vt/sqlparser/sql.y
@@ -103,6 +103,8 @@ func forceEOF(yylex interface{}) {
   partDefs      []*PartitionDefinition
   partDef       *PartitionDefinition
   partSpec      *PartitionSpec
+  vindexParam   VindexParam
+  vindexParams  []VindexParam
 }
 
 %token LEX_ERROR
@@ -145,8 +147,8 @@ func forceEOF(yylex interface{}) {
 %token <empty> JSON_EXTRACT_OP JSON_UNQUOTE_EXTRACT_OP
 
 // DDL Tokens
-%token <bytes> CREATE ALTER DROP RENAME ANALYZE
-%token <bytes> TABLE INDEX VIEW TO IGNORE IF UNIQUE PRIMARY
+%token <bytes> CREATE ALTER DROP RENAME ANALYZE ADD
+%token <bytes> TABLE INDEX VIEW TO IGNORE IF UNIQUE PRIMARY COLUMN CONSTRAINT SPATIAL FULLTEXT FOREIGN
 %token <bytes> SHOW DESCRIBE EXPLAIN DATE ESCAPE REPAIR OPTIMIZE TRUNCATE
 %token <bytes> MAXVALUE PARTITION REORGANIZE LESS THAN PROCEDURE TRIGGER
 %token <bytes> VINDEX VINDEXES
@@ -233,7 +235,7 @@ func forceEOF(yylex interface{}) {
 %type <str> asc_desc_opt
 %type <limit> limit_opt
 %type <str> lock_opt
-%type <columns> ins_column_list using_column_list
+%type <columns> ins_column_list column_list
 %type <partitions> opt_partition_clause partition_list
 %type <updateExprs> on_dup_opt
 %type <updateExprs> update_list
@@ -242,7 +244,7 @@ func forceEOF(yylex interface{}) {
 %type <bytes> for_from
 %type <str> ignore_opt default_opt
 %type <byt> exists_opt
-%type <empty> not_exists_opt non_rename_operation to_opt index_opt constraint_opt
+%type <empty> not_exists_opt non_add_drop_or_rename_operation to_opt index_opt constraint_opt
 %type <bytes> reserved_keyword non_reserved_keyword
 %type <colIdent> sql_id reserved_sql_id col_alias as_ci_opt charset_value using_opt
 %type <tableIdent> table_id reserved_table_id table_alias as_opt_id
@@ -271,6 +273,10 @@ func forceEOF(yylex interface{}) {
 %type <partDefs> partition_definitions
 %type <partDef> partition_definition
 %type <partSpec> partition_operation
+%type <vindexParam> vindex_param
+%type <vindexParams> vindex_param_list vindex_params_opt
+%type <colIdent> vindex_type vindex_type_opt
+%type <bytes> alter_object_type
 
 %start any_command
 
@@ -492,6 +498,56 @@ create_statement:
   {
     $$ = &DDL{Action: CreateStr, NewName: $5.ToViewName()}
   }
+| CREATE VINDEX sql_id vindex_type_opt vindex_params_opt
+  {
+    $$ = &DDL{Action: CreateVindexStr, VindexSpec: &VindexSpec{
+        Name: $3,
+        Type: $4,
+        Params: $5,
+    }}
+  }
+
+vindex_type_opt:
+  {
+    $$ = NewColIdent("")
+  }
+| USING vindex_type
+  {
+    $$ = $2
+  }
+
+vindex_type:
+  ID
+  {
+    $$ = NewColIdent(string($1))
+  }
+
+vindex_params_opt:
+  {
+    var v []VindexParam
+    $$ = v
+  }
+| WITH vindex_param_list
+  {
+    $$ = $2
+  }
+
+vindex_param_list:
+  vindex_param
+  {
+    $$ = make([]VindexParam, 0, 4)
+    $$ = append($$, $1)
+  }
+| vindex_param_list ',' vindex_param
+  {
+    $$ = append($$, $3)
+  }
+
+vindex_param:
+  reserved_sql_id '=' table_opt_value
+  {
+    $$ = VindexParam{Key: $1, Val: $3}
+  }
 
 create_table_prefix:
   CREATE TABLE not_exists_opt table_name
@@ -967,10 +1023,41 @@ table_opt_value:
   }
 
 alter_statement:
-  ALTER ignore_opt TABLE table_name non_rename_operation force_eof
+  ALTER ignore_opt TABLE table_name non_add_drop_or_rename_operation force_eof
+  {
+    $$ = &DDL{Action: AlterStr, Table: $4, NewName: $4}
+  }
+| ALTER ignore_opt TABLE table_name ADD alter_object_type force_eof
+  {
+    $$ = &DDL{Action: AlterStr, Table: $4, NewName: $4}
+  }
+| ALTER ignore_opt TABLE table_name DROP alter_object_type force_eof
   {
     $$ = &DDL{Action: AlterStr, Table: $4, NewName: $4}
   }
+| ALTER ignore_opt TABLE table_name ADD VINDEX sql_id '(' column_list ')' vindex_type_opt vindex_params_opt
+  {
+    $$ = &DDL{
+        Action: AddColVindexStr,
+        Table: $4,
+        VindexSpec: &VindexSpec{
+            Name: $7,
+            Type: $11,
+            Params: $12,
+        },
+        VindexCols: $9,
+      }
+  }
+| ALTER ignore_opt TABLE table_name DROP VINDEX sql_id
+  {
+    $$ = &DDL{
+        Action: DropColVindexStr,
+        Table: $4,
+        VindexSpec: &VindexSpec{
+            Name: $7,
+        },
+      }
+  }
 | ALTER ignore_opt TABLE table_name RENAME to_opt table_name
   {
     // Change this to a rename statement
@@ -990,6 +1077,17 @@ alter_statement:
     $$ = &DDL{Action: AlterStr, Table: $4, PartitionSpec: $5}
   }
 
+alter_object_type:
+  COLUMN
+| CONSTRAINT
+| FOREIGN
+| FULLTEXT
+| ID
+| INDEX
+| KEY
+| PRIMARY
+| SPATIAL
+
 partition_operation:
   REORGANIZE PARTITION sql_id INTO openb partition_definitions closeb
   {
@@ -1397,12 +1495,12 @@ table_name as_opt_id index_hint_list
     $$ = &AliasedTableExpr{Expr:$1, Partitions: $4, As: $6, Hints: $7}
   }
 
-using_column_list:
+column_list:
   sql_id
   {
     $$ = Columns{$1}
   }
-| using_column_list ',' sql_id
+| column_list ',' sql_id
   {
     $$ = append($$, $3)
   }
@@ -1445,7 +1543,7 @@ join_table:
 join_condition:
   ON expression
   { $$ = JoinCondition{On: $2} }
-| USING '(' using_column_list ')'
+| USING '(' column_list ')'
   { $$ = JoinCondition{Using: $3} }
 
 join_condition_opt:
@@ -1561,15 +1659,15 @@ index_hint_list:
   {
     $$ = nil
   }
-| USE INDEX openb using_column_list closeb
+| USE INDEX openb column_list closeb
   {
     $$ = &IndexHints{Type: UseStr, Indexes: $4}
   }
-| IGNORE INDEX openb using_column_list closeb
+| IGNORE INDEX openb column_list closeb
   {
     $$ = &IndexHints{Type: IgnoreStr, Indexes: $4}
   }
-| FORCE INDEX openb using_column_list closeb
+| FORCE INDEX openb column_list closeb
   {
     $$ = &IndexHints{Type: ForceStr, Indexes: $4}
   }
@@ -2447,7 +2545,7 @@ ignore_opt:
 | IGNORE
   { $$ = IgnoreStr }
 
-non_rename_operation:
+non_add_drop_or_rename_operation:
   ALTER
   { $$ = struct{}{} }
 | AUTO_INCREMENT
@@ -2458,8 +2556,6 @@ non_rename_operation:
   { $$ = struct{}{} }
 | DEFAULT
   { $$ = struct{}{} }
-| DROP
-  { $$ = struct{}{} }
 | ORDER
   { $$ = struct{}{} }
 | CONVERT
@@ -2540,7 +2636,8 @@ reserved_table_id:
   Sorted alphabetically
 */
 reserved_keyword:
-  AND
+  ADD
+| AND
 | AS
 | ASC
 | AUTO_INCREMENT
@@ -2656,6 +2753,8 @@ non_reserved_keyword:
 | ENUM
 | EXPANSION
 | FLOAT_TYPE
+| FOREIGN
+| FULLTEXT
 | GLOBAL
 | INT
 | INTEGER
@@ -2687,6 +2786,7 @@ non_reserved_keyword:
 | SHARE
 | SIGNED
 | SMALLINT
+| SPATIAL
 | START
 | STATUS
 | TEXT
diff --git a/go/vt/sqlparser/token.go b/go/vt/sqlparser/token.go
index 0e490ef3807..77ea928b4b6 100644
--- a/go/vt/sqlparser/token.go
+++ b/go/vt/sqlparser/token.go
@@ -83,7 +83,7 @@ func NewTokenizer(r io.Reader) *Tokenizer {
 // in identifiers. See the docs for each grammar to determine which one to put it into.
 var keywords = map[string]int{
 	"accessible":          UNUSED,
-	"add":                 UNUSED,
+	"add":                 ADD,
 	"against":             AGAINST,
 	"all":                 ALL,
 	"alter":               ALTER,
@@ -115,11 +115,11 @@ var keywords = map[string]int{
 	"charset":             CHARSET,
 	"check":               UNUSED,
 	"collate":             COLLATE,
-	"column":              UNUSED,
+	"column":              COLUMN,
 	"comment":             COMMENT_KEYWORD,
 	"commit":              COMMIT,
 	"condition":           UNUSED,
-	"constraint":          UNUSED,
+	"constraint":          CONSTRAINT,
 	"continue":            UNUSED,
 	"convert":             CONVERT,
 	"create":              CREATE,
@@ -171,9 +171,9 @@ var keywords = map[string]int{
 	"float8":              UNUSED,
 	"for":                 FOR,
 	"force":               FORCE,
-	"foreign":             UNUSED,
+	"foreign":             FOREIGN,
 	"from":                FROM,
-	"fulltext":            UNUSED,
+	"fulltext":            FULLTEXT,
 	"generated":           UNUSED,
 	"get":                 UNUSED,
 	"global":              GLOBAL,
@@ -300,7 +300,7 @@ var keywords = map[string]int{
 	"signal":              UNUSED,
 	"signed":              SIGNED,
 	"smallint":            SMALLINT,
-	"spatial":             UNUSED,
+	"spatial":             SPATIAL,
 	"specific":            UNUSED,
 	"sql":                 UNUSED,
 	"sqlexception":        UNUSED,
diff --git a/go/vt/vtgate/executor.go b/go/vt/vtgate/executor.go
index d2757e6b7de..1cb3f775cf9 100644
--- a/go/vt/vtgate/executor.go
+++ b/go/vt/vtgate/executor.go
@@ -22,6 +22,7 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
+	"reflect"
 	"sort"
 	"strings"
 	"sync"
@@ -34,16 +35,17 @@ import (
 	"vitess.io/vitess/go/cache"
 	"vitess.io/vitess/go/sqltypes"
 	"vitess.io/vitess/go/stats"
+	"vitess.io/vitess/go/vt/callerid"
 	"vitess.io/vitess/go/vt/key"
 	"vitess.io/vitess/go/vt/sqlannotation"
 	"vitess.io/vitess/go/vt/sqlparser"
 	"vitess.io/vitess/go/vt/srvtopo"
-	"vitess.io/vitess/go/vt/topo"
 	"vitess.io/vitess/go/vt/topo/topoproto"
 	"vitess.io/vitess/go/vt/vterrors"
 	"vitess.io/vitess/go/vt/vtgate/engine"
 	"vitess.io/vitess/go/vt/vtgate/planbuilder"
 	"vitess.io/vitess/go/vt/vtgate/vindexes"
+	"vitess.io/vitess/go/vt/vtgate/vschemaacl"
 
 	querypb "vitess.io/vitess/go/vt/proto/query"
 	topodatapb "vitess.io/vitess/go/vt/proto/topodata"
@@ -71,13 +73,14 @@ type Executor struct {
 	txConn      *TxConn
 
 	mu               sync.Mutex
-	srvVschema       *vschemapb.SrvVSchema
 	vschema          *vindexes.VSchema
 	normalize        bool
 	streamSize       int
 	legacyAutocommit bool
 	plans            *cache.LRUCache
 	vschemaStats     *VSchemaStats
+
+	vm VSchemaManager
 }
 
 var executorOnce sync.Once
@@ -95,7 +98,11 @@ func NewExecutor(ctx context.Context, serv srvtopo.Server, cell, statsName strin
 		streamSize:       streamSize,
 		legacyAutocommit: legacyAutocommit,
 	}
-	e.watchSrvVSchema(ctx, cell)
+
+	vschemaacl.Init()
+	e.vm = VSchemaManager{e: e}
+	e.vm.watchSrvVSchema(ctx, cell)
+
 	executorOnce.Do(func() {
 		stats.Publish("QueryPlanCacheLength", stats.IntFunc(e.plans.Length))
 		stats.Publish("QueryPlanCacheSize", stats.IntFunc(e.plans.Size))
@@ -302,6 +309,24 @@ func (e *Executor) destinationExec(ctx context.Context, safeSession *SafeSession
 }
 
 func (e *Executor) handleDDL(ctx context.Context, safeSession *SafeSession, sql string, bindVars map[string]*querypb.BindVariable, target querypb.Target, logStats *LogStats) (*sqltypes.Result, error) {
+	// Parse the statement to handle vindex operations
+	// If the statement failed to be properly parsed, fall through anyway
+	// to broadcast the ddl to all shards.
+	stmt, _ := sqlparser.Parse(sql)
+	ddl, ok := stmt.(*sqlparser.DDL)
+	if ok {
+		execStart := time.Now()
+		logStats.PlanTime = execStart.Sub(logStats.StartTime)
+		switch ddl.Action {
+		case sqlparser.CreateVindexStr, sqlparser.AddColVindexStr, sqlparser.DropColVindexStr:
+			err := e.handleVindexDDL(ctx, safeSession, target, ddl, logStats)
+			logStats.ExecuteTime = time.Since(execStart)
+			return &sqltypes.Result{}, err
+		default:
+			// fallthrough to broadcast the ddl to all shards
+		}
+	}
+
 	if target.Keyspace == "" {
 		return nil, errNoKeyspace
 	}
@@ -327,6 +352,142 @@ func (e *Executor) handleDDL(ctx context.Context, safeSession *SafeSession, sql
 	return result, err
 }
 
+func (e *Executor) handleVindexDDL(ctx context.Context, safeSession *SafeSession, target querypb.Target, ddl *sqlparser.DDL, logStats *LogStats) error {
+	vschema := e.vm.GetCurrentSrvVschema()
+	if vschema == nil {
+		return vterrors.Errorf(vtrpcpb.Code_INTERNAL, "vschema not loaded")
+	}
+
+	allowed := vschemaacl.Authorized(callerid.ImmediateCallerIDFromContext(ctx))
+	if !allowed {
+		return vterrors.Errorf(vtrpcpb.Code_PERMISSION_DENIED, "not authorized to perform vschema operations")
+
+	}
+
+	// Resolve the keyspace either from the table qualifier or the target keyspace
+	var ksName string
+	if !ddl.Table.IsEmpty() {
+		ksName = ddl.Table.Qualifier.String()
+	}
+	if ksName == "" {
+		ksName = target.Keyspace
+	}
+
+	if ksName == "" {
+		return errNoKeyspace
+	}
+
+	ks, ok := vschema.Keyspaces[ksName]
+	if !ok {
+		return vterrors.Errorf(vtrpcpb.Code_INTERNAL, "keyspace %s not defined in vschema", ksName)
+	}
+
+	var tableName string
+	var table *vschemapb.Table
+	if !ddl.Table.IsEmpty() {
+		tableName = ddl.Table.Name.String()
+		table, _ = ks.Tables[tableName]
+	}
+
+	switch ddl.Action {
+	case sqlparser.CreateVindexStr:
+		name := ddl.VindexSpec.Name.String()
+		if _, ok := ks.Vindexes[name]; ok {
+			return vterrors.Errorf(vtrpcpb.Code_INTERNAL, "vindex %s already exists in keyspace %s", name, target.Keyspace)
+		}
+		owner, params := ddl.VindexSpec.ParseParams()
+		ks.Vindexes[name] = &vschemapb.Vindex{
+			Type:   ddl.VindexSpec.Type.String(),
+			Params: params,
+			Owner:  owner,
+		}
+
+		return e.vm.UpdateVSchema(ctx, target.Keyspace, vschema)
+	case sqlparser.AddColVindexStr:
+		// Support two cases:
+		//
+		// 1. The vindex type / params / owner are specified. If the
+		//    named vindex doesn't exist, create it. If it does exist,
+		//    require the parameters to match.
+		//
+		// 2. The vindex type is not specified. Make sure the vindex
+		//    already exists.
+		spec := ddl.VindexSpec
+		name := spec.Name.String()
+		if !spec.Type.IsEmpty() {
+			owner, params := spec.ParseParams()
+			if vindex, ok := ks.Vindexes[name]; ok {
+				if vindex.Type != spec.Type.String() {
+					return vterrors.Errorf(vtrpcpb.Code_INTERNAL, "vindex %s defined with type %s not %s", name, vindex.Type, spec.Type.String())
+				}
+				if vindex.Owner != owner {
+					return vterrors.Errorf(vtrpcpb.Code_INTERNAL, "vindex %s defined with owner %s not %s", name, vindex.Owner, owner)
+				}
+				if (len(vindex.Params) != 0 || len(params) != 0) && !reflect.DeepEqual(vindex.Params, params) {
+					return vterrors.Errorf(vtrpcpb.Code_INTERNAL, "vindex %s defined with different parameters", name)
+				}
+			} else {
+				ks.Vindexes[name] = &vschemapb.Vindex{
+					Type:   spec.Type.String(),
+					Params: params,
+					Owner:  owner,
+				}
+			}
+		} else {
+			if _, ok := ks.Vindexes[name]; !ok {
+				return vterrors.Errorf(vtrpcpb.Code_INTERNAL, "vindex %s does not exist in keyspace %s", name, target.Keyspace)
+			}
+		}
+
+		// If this is the first vindex being defined on the table, create
+		// the empty table record
+		if table == nil {
+			table = &vschemapb.Table{
+				ColumnVindexes: make([]*vschemapb.ColumnVindex, 0, 4),
+			}
+		}
+
+		// Make sure there isn't already a vindex with the same name on
+		// this table.
+		for _, vindex := range table.ColumnVindexes {
+			if vindex.Name == name {
+				return vterrors.Errorf(vtrpcpb.Code_INTERNAL, "vindex %s already defined on table %s", name, tableName)
+			}
+		}
+
+		columns := make([]string, len(ddl.VindexCols), len(ddl.VindexCols))
+		for i, col := range ddl.VindexCols {
+			columns[i] = col.String()
+		}
+		table.ColumnVindexes = append(table.ColumnVindexes, &vschemapb.ColumnVindex{
+			Name:    name,
+			Columns: columns,
+		})
+		ks.Tables[tableName] = table
+
+		return e.vm.UpdateVSchema(ctx, target.Keyspace, vschema)
+	case sqlparser.DropColVindexStr:
+		spec := ddl.VindexSpec
+		name := spec.Name.String()
+		if table == nil {
+			return vterrors.Errorf(vtrpcpb.Code_INTERNAL, "table %s.%s not defined in vschema", ksName, tableName)
+		}
+
+		for i, colVindex := range table.ColumnVindexes {
+			if colVindex.Name == name {
+				table.ColumnVindexes = append(table.ColumnVindexes[:i], table.ColumnVindexes[i+1:]...)
+				if len(table.ColumnVindexes) == 0 {
+					delete(ks.Tables, tableName)
+				}
+				return e.vm.UpdateVSchema(ctx, target.Keyspace, vschema)
+			}
+		}
+		return vterrors.Errorf(vtrpcpb.Code_INTERNAL, "vindex %s not defined in table %s.%s", name, ksName, tableName)
+	}
+
+	return vterrors.Errorf(vtrpcpb.Code_INTERNAL, "unexpected vindex ddl operation %s", ddl.Action)
+}
+
 func (e *Executor) handleBegin(ctx context.Context, safeSession *SafeSession, sql string, bindVars map[string]*querypb.BindVariable, target querypb.Target, logStats *LogStats) (*sqltypes.Result, error) {
 	if target.TabletType != topodatapb.TabletType_MASTER {
 		return nil, vterrors.Errorf(vtrpcpb.Code_INVALID_ARGUMENT, "transactions are supported only for master tablet types, current type: %v", target.TabletType)
@@ -616,7 +777,7 @@ func (e *Executor) handleShow(ctx context.Context, safeSession *SafeSession, sql
 			RowsAffected: uint64(len(rows)),
 		}, nil
 	case sqlparser.KeywordString(sqlparser.VINDEXES):
-		vschema := e.SrvVSchema()
+		vschema := e.vm.GetCurrentSrvVschema()
 		if vschema == nil {
 			return nil, vterrors.Errorf(vtrpcpb.Code_INTERNAL, "vschema not loaded")
 		}
@@ -624,8 +785,10 @@ func (e *Executor) handleShow(ctx context.Context, safeSession *SafeSession, sql
 		rows := make([][]sqltypes.Value, 0, 16)
 
 		if show.HasOnTable() {
-			// If the table is fully qualified, then override the keyspace setting
-			// in the session. Otherwise require it to be able to resolve the table.
+			// If the table reference is not fully qualified, then
+			// pull the keyspace from the session. Fail if the keyspace
+			// isn't specified or isn't valid, or if the table isn't
+			// known.
 			ksName := show.OnTable.Qualifier.String()
 			if ksName == "" {
 				ksName = target.Keyspace
@@ -637,7 +800,6 @@ func (e *Executor) handleShow(ctx context.Context, safeSession *SafeSession, sql
 			}
 
 			tableName := show.OnTable.Name.String()
-
 			table, ok := ks.Tables[tableName]
 			if !ok {
 				return nil, vterrors.Errorf(vtrpcpb.Code_INTERNAL, "table `%s` does not exist in keyspace `%s`", tableName, ksName)
@@ -949,90 +1111,6 @@ func (e *Executor) IsKeyspaceRangeBasedSharded(keyspace string) bool {
 	return ks.Keyspace.Sharded
 }
 
-// watchSrvVSchema watches the SrvVSchema from the topo. The function does
-// not return an error. It instead logs warnings on failure.
-// The SrvVSchema object is roll-up of all the Keyspace information,
-// so when a keyspace is added or removed, it will be properly updated.
-//
-// This function will wait until the first value has either been processed
-// or triggered an error before returning.
-func (e *Executor) watchSrvVSchema(ctx context.Context, cell string) {
-	e.serv.WatchSrvVSchema(ctx, cell, func(v *vschemapb.SrvVSchema, err error) {
-		// Create a closure to save the vschema. If the value
-		// passed is nil, it means we encountered an error and
-		// we don't know the real value. In this case, we want
-		// to use the previous value if it was set, or an
-		// empty vschema if it wasn't.
-		switch err {
-		case nil:
-			// Good case, we can try to save that value.
-		case topo.ErrNoNode:
-			// If the SrvVschema disappears, we need to clear our record.
-			// Otherwise, keep what we already had before.
-			v = nil
-		default:
-			// Watch error, increment our counters.
-			if vschemaCounters != nil {
-				vschemaCounters.Add("WatchError", 1)
-			}
-		}
-
-		// Transform the provided SrvVSchema into a VSchema.
-		var vschema *vindexes.VSchema
-		if v != nil {
-			vschema, err = vindexes.BuildVSchema(v)
-			if err != nil {
-				log.Warningf("Error creating VSchema for cell %v (will try again next update): %v", cell, err)
-				v = nil
-				err = fmt.Errorf("Error creating VSchema for cell %v: %v", cell, err)
-				if vschemaCounters != nil {
-					vschemaCounters.Add("Parsing", 1)
-				}
-			}
-		}
-		if v == nil {
-			// We encountered an error, build an empty vschema.
-			vschema, _ = vindexes.BuildVSchema(&vschemapb.SrvVSchema{})
-		}
-
-		// Build the display version. At this point, three cases:
-		// - v is nil, vschema is empty, and err is set:
-		//     1. when the watch returned an error.
-		//     2. when BuildVSchema failed.
-		// - v is set, vschema is full, and err is nil:
-		//     3. when everything worked.
-		errorMessage := ""
-		if err != nil {
-			errorMessage = err.Error()
-		}
-		stats := NewVSchemaStats(vschema, errorMessage)
-
-		// save our value
-		e.mu.Lock()
-		if v != nil {
-			// No errors, we can save our VSchema and SrvVSchema
-			// (for show queries).
-			e.vschema = vschema
-			e.srvVschema = v
-		} else {
-			// We had an error, use the empty vschema if
-			// we had nothing before, or if the vschema
-			// disappeared.
-			if e.vschema == nil || err == topo.ErrNoNode {
-				e.vschema = vschema
-				e.srvVschema = nil
-			}
-		}
-		e.vschemaStats = stats
-		e.mu.Unlock()
-		e.plans.Clear()
-
-		if vschemaCounters != nil {
-			vschemaCounters.Add("Reload", 1)
-		}
-	})
-}
-
 // VSchema returns the VSchema.
 func (e *Executor) VSchema() *vindexes.VSchema {
 	e.mu.Lock()
@@ -1040,11 +1118,18 @@ func (e *Executor) VSchema() *vindexes.VSchema {
 	return e.vschema
 }
 
-// SrvVSchema returns the SrvVSchema.
-func (e *Executor) SrvVSchema() *vschemapb.SrvVSchema {
+// SaveVSchema updates the vschema and stats
+func (e *Executor) SaveVSchema(vschema *vindexes.VSchema, stats *VSchemaStats) {
 	e.mu.Lock()
 	defer e.mu.Unlock()
-	return e.srvVschema
+	e.vschema = vschema
+	e.vschemaStats = stats
+	e.plans.Clear()
+
+	if vschemaCounters != nil {
+		vschemaCounters.Add("Reload", 1)
+	}
+
 }
 
 // ParseTarget parses the string representation of a Target
diff --git a/go/vt/vtgate/executor_framework_test.go b/go/vt/vtgate/executor_framework_test.go
index 9a5795fe0e1..8ac7813cead 100644
--- a/go/vt/vtgate/executor_framework_test.go
+++ b/go/vt/vtgate/executor_framework_test.go
@@ -329,7 +329,7 @@ func createExecutorEnv() (executor *Executor, sbc1, sbc2, sbclookup *sandboxconn
 	hc := discovery.NewFakeHealthCheck()
 	s := createSandbox("TestExecutor")
 	s.VSchema = executorVSchema
-	serv := new(sandboxTopo)
+	serv := newSandboxForCells([]string{cell})
 	resolver := newTestResolver(hc, serv, cell)
 	sbc1 = hc.AddTestTablet(cell, "-20", 1, "TestExecutor", "-20", topodatapb.TabletType_MASTER, true, 1, nil)
 	sbc2 = hc.AddTestTablet(cell, "40-60", 1, "TestExecutor", "40-60", topodatapb.TabletType_MASTER, true, 1, nil)
@@ -360,7 +360,7 @@ func createCustomExecutor(vschema string) (executor *Executor, sbc1, sbc2, sbclo
 	hc := discovery.NewFakeHealthCheck()
 	s := createSandbox("TestExecutor")
 	s.VSchema = vschema
-	serv := new(sandboxTopo)
+	serv := newSandboxForCells([]string{cell})
 	resolver := newTestResolver(hc, serv, cell)
 	sbc1 = hc.AddTestTablet(cell, "-20", 1, "TestExecutor", "-20", topodatapb.TabletType_MASTER, true, 1, nil)
 	sbc2 = hc.AddTestTablet(cell, "40-60", 1, "TestExecutor", "40-60", topodatapb.TabletType_MASTER, true, 1, nil)
diff --git a/go/vt/vtgate/executor_test.go b/go/vt/vtgate/executor_test.go
index d39892c6db3..04ae829add5 100644
--- a/go/vt/vtgate/executor_test.go
+++ b/go/vt/vtgate/executor_test.go
@@ -23,16 +23,21 @@ import (
 	"reflect"
 	"strings"
 	"testing"
+	"time"
 
 	"golang.org/x/net/context"
 
 	"github.com/golang/protobuf/proto"
 	"vitess.io/vitess/go/sqltypes"
+	"vitess.io/vitess/go/vt/callerid"
 	"vitess.io/vitess/go/vt/vtgate/vindexes"
+	"vitess.io/vitess/go/vt/vtgate/vschemaacl"
 
 	querypb "vitess.io/vitess/go/vt/proto/query"
 	topodatapb "vitess.io/vitess/go/vt/proto/topodata"
+	vschemapb "vitess.io/vitess/go/vt/proto/vschema"
 	vtgatepb "vitess.io/vitess/go/vt/proto/vtgate"
+	vtrpcpb "vitess.io/vitess/go/vt/proto/vtrpc"
 )
 
 func TestExecutorTransactionsNoAutoCommit(t *testing.T) {
@@ -887,11 +892,541 @@ func TestExecutorDDL(t *testing.T) {
 	_, err := executor.Execute(context.Background(), "TestExecute", NewSafeSession(&vtgatepb.Session{}), "create", nil)
 	want := errNoKeyspace.Error()
 	if err == nil || err.Error() != want {
-		t.Errorf("show vschema_tables: %v, want %v", err, want)
+		t.Errorf("ddl with no keyspace: %v, want %v", err, want)
 	}
 	testQueryLog(t, logChan, "TestExecute", "DDL", "create", 0)
 }
 
+func waitForVindex(t *testing.T, ks, name string, watch chan *vschemapb.SrvVSchema, executor *Executor) (*vschemapb.SrvVSchema, *vschemapb.Vindex) {
+	t.Helper()
+
+	// Wait up to 10ms until the watch gets notified of the update
+	ok := false
+	for i := 0; i < 10; i++ {
+		select {
+		case vschema := <-watch:
+			_, ok = vschema.Keyspaces[ks].Vindexes[name]
+			if !ok {
+				t.Errorf("updated vschema did not contain %s", name)
+			}
+			break
+		default:
+			time.Sleep(time.Millisecond)
+		}
+	}
+	if !ok {
+		t.Errorf("vschema was not updated as expected")
+	}
+
+	// Wait up to 10ms until the vindex manager gets notified of the update
+	for i := 0; i < 10; i++ {
+		vschema := executor.vm.GetCurrentSrvVschema()
+		vindex, ok := vschema.Keyspaces[ks].Vindexes[name]
+		if ok {
+			return vschema, vindex
+		}
+		time.Sleep(time.Millisecond)
+	}
+
+	t.Fatalf("updated vschema did not contain %s", name)
+	return nil, nil
+}
+
+func waitForColVindexes(t *testing.T, ks, table string, names []string, executor *Executor) *vschemapb.SrvVSchema {
+	t.Helper()
+
+	// Wait up to 10ms until the vindex manager gets notified of the update
+	for i := 0; i < 10; i++ {
+
+		vschema := executor.vm.GetCurrentSrvVschema()
+		table, ok := vschema.Keyspaces[ks].Tables[table]
+
+		// The table is removed from the vschema when there are no
+		// vindexes defined
+		if !ok == (len(names) == 0) {
+			return vschema
+		} else if ok && (len(names) == len(table.ColumnVindexes)) {
+			match := true
+			for i, name := range names {
+				if name != table.ColumnVindexes[i].Name {
+					match = false
+					break
+				}
+			}
+			if match {
+				return vschema
+			}
+		}
+
+		time.Sleep(time.Millisecond)
+
+	}
+
+	t.Fatalf("updated vschema did not contain vindexes %v on table %s", names, table)
+	return nil
+}
+
+func TestExecutorCreateVindexDDL(t *testing.T) {
+	*vschemaacl.AuthorizedDDLUsers = "%"
+	defer func() {
+		*vschemaacl.AuthorizedDDLUsers = ""
+	}()
+	executor, sbc1, sbc2, sbclookup := createExecutorEnv()
+	ks := "TestExecutor"
+
+	vschemaUpdates := make(chan *vschemapb.SrvVSchema, 4)
+	executor.serv.WatchSrvVSchema(context.Background(), "aa", func(vschema *vschemapb.SrvVSchema, err error) {
+		vschemaUpdates <- vschema
+	})
+
+	vschema := <-vschemaUpdates
+	vindex, ok := vschema.Keyspaces[ks].Vindexes["test_vindex"]
+	if ok {
+		t.Fatalf("test_vindex should not exist in original vschema")
+	}
+
+	stmt := "create vindex test_vindex using hash"
+	wantCount := []int64{0, 0, 0}
+	_, err := executor.Execute(context.Background(), "TestExecute", NewSafeSession(&vtgatepb.Session{TargetString: ks}), stmt, nil)
+	if err != nil {
+		t.Error(err)
+	}
+	gotCount := []int64{
+		sbc1.ExecCount.Get(),
+		sbc2.ExecCount.Get(),
+		sbclookup.ExecCount.Get(),
+	}
+	if !reflect.DeepEqual(gotCount, wantCount) {
+		t.Errorf("Exec %s: %v, want %v", stmt, gotCount, wantCount)
+	}
+
+	time.Sleep(10 * time.Millisecond)
+	select {
+	case vschema = <-vschemaUpdates:
+		vindex, ok = vschema.Keyspaces[ks].Vindexes["test_vindex"]
+		if !ok || vindex.Type != "hash" {
+			t.Errorf("updated vschema did not contain test_vindex")
+		}
+	default:
+		t.Errorf("vschema was not updated as expected")
+	}
+
+	// Wait up to 10ms until the vindex manager gets notified of the update
+	for i := 0; i < 10; i++ {
+		vschema = executor.vm.GetCurrentSrvVschema()
+		vindex, ok = vschema.Keyspaces[ks].Vindexes["test_vindex"]
+		if ok {
+			break
+		}
+		time.Sleep(time.Millisecond)
+	}
+	if !ok || vindex.Type != "hash" {
+		t.Errorf("updated vschema did not contain test_vindex")
+	}
+
+	_, err = executor.Execute(context.Background(), "TestExecute", NewSafeSession(&vtgatepb.Session{TargetString: ks}), stmt, nil)
+	wantErr := "vindex test_vindex already exists in keyspace TestExecutor"
+	if err == nil || err.Error() != wantErr {
+		t.Errorf("create duplicate vindex: %v, want %s", err, wantErr)
+	}
+	gotCount = []int64{
+		sbc1.ExecCount.Get(),
+		sbc2.ExecCount.Get(),
+		sbclookup.ExecCount.Get(),
+	}
+	if !reflect.DeepEqual(gotCount, wantCount) {
+		t.Errorf("Exec %s: %v, want %v", stmt, gotCount, wantCount)
+	}
+	select {
+	case vschema = <-vschemaUpdates:
+		t.Errorf("vschema shoud not be updated on error")
+	default:
+	}
+
+}
+
+func TestExecutorAddDropVindexDDL(t *testing.T) {
+	*vschemaacl.AuthorizedDDLUsers = "%"
+	defer func() {
+		*vschemaacl.AuthorizedDDLUsers = ""
+	}()
+	executor, sbc1, sbc2, sbclookup := createExecutorEnv()
+	ks := "TestExecutor"
+	session := NewSafeSession(&vtgatepb.Session{TargetString: ks})
+	vschemaUpdates := make(chan *vschemapb.SrvVSchema, 4)
+	executor.serv.WatchSrvVSchema(context.Background(), "aa", func(vschema *vschemapb.SrvVSchema, err error) {
+		vschemaUpdates <- vschema
+	})
+
+	vschema := <-vschemaUpdates
+	vindex, ok := vschema.Keyspaces[ks].Vindexes["test_hash"]
+	if ok {
+		t.Fatalf("test_hash should not exist in original vschema")
+	}
+
+	// Create a new vindex implicitly with the statement
+	stmt := "alter table test add vindex test_hash (id) using hash "
+	_, err := executor.Execute(context.Background(), "TestExecute", session, stmt, nil)
+	if err != nil {
+		t.Fatalf("error in %s: %v", stmt, err)
+	}
+
+	vschema, vindex = waitForVindex(t, ks, "test_hash", vschemaUpdates, executor)
+	if vindex.Type != "hash" {
+		t.Errorf("vindex type %s not hash", vindex.Type)
+	}
+
+	vschema = waitForColVindexes(t, ks, "test", []string{"test_hash"}, executor)
+	qr, err := executor.Execute(context.Background(), "TestExecute", session, "show vindexes on TestExecutor.test", nil)
+	if err != nil {
+		t.Fatalf("error in show vindexes on TestExecutor.test: %v", err)
+	}
+	wantqr := &sqltypes.Result{
+		Fields: buildVarCharFields("Columns", "Name", "Type", "Params", "Owner"),
+		Rows: [][]sqltypes.Value{
+			buildVarCharRow("id", "test_hash", "hash", "", ""),
+		},
+		RowsAffected: 1,
+	}
+	if !reflect.DeepEqual(qr, wantqr) {
+		t.Errorf("show vindexes on TestExecutor.test:\n%+v, want\n%+v", qr, wantqr)
+	}
+
+	// Drop it
+	stmt = "alter table test drop vindex test_hash"
+	_, err = executor.Execute(context.Background(), "TestExecute", session, stmt, nil)
+	if err != nil {
+		t.Fatalf("error in %s: %v", stmt, err)
+	}
+
+	vschema, vindex = waitForVindex(t, ks, "test_hash", vschemaUpdates, executor)
+	vschema = waitForColVindexes(t, ks, "test", []string{}, executor)
+	qr, err = executor.Execute(context.Background(), "TestExecute", session, "show vindexes on TestExecutor.test", nil)
+	wantErr := "table `test` does not exist in keyspace `TestExecutor`"
+	if err == nil || err.Error() != wantErr {
+		t.Fatalf("expected error in show vindexes on TestExecutor.test %v: got %v", wantErr, err)
+	}
+
+	// add it again using the same syntax
+	stmt = "alter table test add vindex test_hash (id) using hash "
+	_, err = executor.Execute(context.Background(), "TestExecute", session, stmt, nil)
+	if err != nil {
+		t.Fatalf("error in %s: %v", stmt, err)
+	}
+
+	vschema, vindex = waitForVindex(t, ks, "test_hash", vschemaUpdates, executor)
+	if vindex.Type != "hash" {
+		t.Errorf("vindex type %s not hash", vindex.Type)
+	}
+
+	vschema = waitForColVindexes(t, ks, "test", []string{"test_hash"}, executor)
+
+	qr, err = executor.Execute(context.Background(), "TestExecute", session, "show vindexes on TestExecutor.test", nil)
+	if err != nil {
+		t.Fatalf("error in show vindexes on TestExecutor.test: %v", err)
+	}
+	wantqr = &sqltypes.Result{
+		Fields: buildVarCharFields("Columns", "Name", "Type", "Params", "Owner"),
+		Rows: [][]sqltypes.Value{
+			buildVarCharRow("id", "test_hash", "hash", "", ""),
+		},
+		RowsAffected: 1,
+	}
+	if !reflect.DeepEqual(qr, wantqr) {
+		t.Errorf("show vindexes on TestExecutor.test:\n%+v, want\n%+v", qr, wantqr)
+	}
+
+	// add another
+	stmt = "alter table test add vindex test_lookup (c1,c2) using lookup with owner=`test`, from=`c1,c2`, table=test_lookup, to=keyspace_id"
+	_, err = executor.Execute(context.Background(), "TestExecute", session, stmt, nil)
+	if err != nil {
+		t.Fatalf("error in %s: %v", stmt, err)
+	}
+
+	vschema, vindex = waitForVindex(t, ks, "test_lookup", vschemaUpdates, executor)
+	if vindex.Type != "lookup" {
+		t.Errorf("vindex type %s not hash", vindex.Type)
+	}
+
+	if table, ok := vschema.Keyspaces[ks].Tables["test"]; ok {
+		if len(table.ColumnVindexes) != 2 {
+			t.Fatalf("table vindexes want 1 got %d", len(table.ColumnVindexes))
+		}
+		if table.ColumnVindexes[1].Name != "test_lookup" {
+			t.Fatalf("table vindexes didn't contain test_lookup")
+		}
+	} else {
+		t.Fatalf("table test not defined in vschema")
+	}
+
+	qr, err = executor.Execute(context.Background(), "TestExecute", session, "show vindexes on TestExecutor.test", nil)
+	if err != nil {
+		t.Fatalf("error in show vindexes on TestExecutor.test: %v", err)
+	}
+	wantqr = &sqltypes.Result{
+		Fields: buildVarCharFields("Columns", "Name", "Type", "Params", "Owner"),
+		Rows: [][]sqltypes.Value{
+			buildVarCharRow("id", "test_hash", "hash", "", ""),
+			buildVarCharRow("c1, c2", "test_lookup", "lookup", "from=c1,c2; table=test_lookup; to=keyspace_id", "test"),
+		},
+		RowsAffected: 2,
+	}
+	if !reflect.DeepEqual(qr, wantqr) {
+		t.Errorf("show vindexes on TestExecutor.test:\n%+v, want\n%+v", qr, wantqr)
+	}
+
+	stmt = "alter table test add vindex test_hash_id2 (id2) using hash"
+	_, err = executor.Execute(context.Background(), "TestExecute", session, stmt, nil)
+	if err != nil {
+		t.Fatalf("error in %s: %v", stmt, err)
+	}
+
+	vschema, vindex = waitForVindex(t, ks, "test_hash_id2", vschemaUpdates, executor)
+	if vindex.Type != "hash" {
+		t.Errorf("vindex type %s not hash", vindex.Type)
+	}
+
+	if table, ok := vschema.Keyspaces[ks].Tables["test"]; ok {
+		if len(table.ColumnVindexes) != 3 {
+			t.Fatalf("table vindexes want 1 got %d", len(table.ColumnVindexes))
+		}
+		if table.ColumnVindexes[2].Name != "test_hash_id2" {
+			t.Fatalf("table vindexes didn't contain test_hash_id2")
+		}
+	} else {
+		t.Fatalf("table test not defined in vschema")
+	}
+
+	qr, err = executor.Execute(context.Background(), "TestExecute", session, "show vindexes on TestExecutor.test", nil)
+	if err != nil {
+		t.Fatalf("error in show vindexes on TestExecutor.test: %v", err)
+	}
+	wantqr = &sqltypes.Result{
+		Fields: buildVarCharFields("Columns", "Name", "Type", "Params", "Owner"),
+		Rows: [][]sqltypes.Value{
+			buildVarCharRow("id", "test_hash", "hash", "", ""),
+			buildVarCharRow("c1, c2", "test_lookup", "lookup", "from=c1,c2; table=test_lookup; to=keyspace_id", "test"),
+			buildVarCharRow("id2", "test_hash_id2", "hash", "", ""),
+		},
+		RowsAffected: 3,
+	}
+	if !reflect.DeepEqual(qr, wantqr) {
+		t.Errorf("show vindexes on TestExecutor.test:\n%+v, want\n%+v", qr, wantqr)
+	}
+
+	// drop one
+	stmt = "alter table test drop vindex test_lookup"
+	_, err = executor.Execute(context.Background(), "TestExecute", session, stmt, nil)
+	if err != nil {
+		t.Fatalf("error in %s: %v", stmt, err)
+	}
+
+	// wait for up to 50ms for it to disappear
+	deadline := time.Now().Add(50 * time.Millisecond)
+	for {
+		qr, err = executor.Execute(context.Background(), "TestExecute", session, "show vindexes on TestExecutor.test", nil)
+		if err != nil {
+			t.Fatalf("error in show vindexes on TestExecutor.test: %v", err)
+		}
+		wantqr = &sqltypes.Result{
+			Fields: buildVarCharFields("Columns", "Name", "Type", "Params", "Owner"),
+			Rows: [][]sqltypes.Value{
+				buildVarCharRow("id", "test_hash", "hash", "", ""),
+				buildVarCharRow("id2", "test_hash_id2", "hash", "", ""),
+			},
+			RowsAffected: 2,
+		}
+		if reflect.DeepEqual(qr, wantqr) {
+			break
+		}
+
+		if time.Now().After(deadline) {
+			t.Errorf("timed out waiting for test_lookup vindex to be removed")
+		}
+		time.Sleep(1 * time.Millisecond)
+	}
+
+	// use the newly created vindex on a new table
+	stmt = "alter table test2 add vindex test_hash (id)"
+	_, err = executor.Execute(context.Background(), "TestExecute", session, stmt, nil)
+	if err != nil {
+		t.Fatalf("error in %s: %v", stmt, err)
+	}
+
+	vschema, vindex = waitForVindex(t, ks, "test_hash", vschemaUpdates, executor)
+	if vindex.Type != "hash" {
+		t.Errorf("vindex type %s not hash", vindex.Type)
+	}
+
+	if table, ok := vschema.Keyspaces[ks].Tables["test2"]; ok {
+		if len(table.ColumnVindexes) != 1 {
+			t.Fatalf("table vindexes want 1 got %d", len(table.ColumnVindexes))
+		}
+		if table.ColumnVindexes[0].Name != "test_hash" {
+			t.Fatalf("table vindexes didn't contain test_hash")
+		}
+	} else {
+		t.Fatalf("table test2 not defined in vschema")
+	}
+
+	// create an identical vindex definition on a different table
+	stmt = "alter table test2 add vindex test_lookup (c1,c2) using lookup with owner=`test`, from=`c1,c2`, table=test_lookup, to=keyspace_id"
+	_, err = executor.Execute(context.Background(), "TestExecute", session, stmt, nil)
+	if err != nil {
+		t.Fatalf("error in %s: %v", stmt, err)
+	}
+
+	vschema, vindex = waitForVindex(t, ks, "test_lookup", vschemaUpdates, executor)
+	if vindex.Type != "lookup" {
+		t.Errorf("vindex type %s not hash", vindex.Type)
+	}
+
+	if table, ok := vschema.Keyspaces[ks].Tables["test2"]; ok {
+		if len(table.ColumnVindexes) != 2 {
+			t.Fatalf("table vindexes want 1 got %d", len(table.ColumnVindexes))
+		}
+		if table.ColumnVindexes[1].Name != "test_lookup" {
+			t.Fatalf("table vindexes didn't contain test_lookup")
+		}
+	} else {
+		t.Fatalf("table test2 not defined in vschema")
+	}
+
+	qr, err = executor.Execute(context.Background(), "TestExecute", session, "show vindexes on TestExecutor.test2", nil)
+	if err != nil {
+		t.Fatalf("error in show vindexes on TestExecutor.test2: %v", err)
+	}
+	wantqr = &sqltypes.Result{
+		Fields: buildVarCharFields("Columns", "Name", "Type", "Params", "Owner"),
+		Rows: [][]sqltypes.Value{
+			buildVarCharRow("id", "test_hash", "hash", "", ""),
+			buildVarCharRow("c1, c2", "test_lookup", "lookup", "from=c1,c2; table=test_lookup; to=keyspace_id", "test"),
+		},
+		RowsAffected: 2,
+	}
+	if !reflect.DeepEqual(qr, wantqr) {
+		t.Errorf("show vindexes on TestExecutor.test:\n%+v, want\n%+v", qr, wantqr)
+	}
+
+	stmt = "alter table test2 add vindex nonexistent (c1,c2)"
+	_, err = executor.Execute(context.Background(), "TestExecute", session, stmt, nil)
+	wantErr = "vindex nonexistent does not exist in keyspace TestExecutor"
+	if err == nil || err.Error() != wantErr {
+		t.Errorf("got %v want err %s", err, wantErr)
+	}
+
+	stmt = "alter table test2 add vindex test_hash (c1,c2) using lookup"
+	_, err = executor.Execute(context.Background(), "TestExecute", session, stmt, nil)
+	wantErr = "vindex test_hash defined with type hash not lookup"
+	if err == nil || err.Error() != wantErr {
+		t.Errorf("got %v want err %s", err, wantErr)
+	}
+
+	stmt = "alter table test2 add vindex test_lookup (c1,c2) using lookup with owner=xyz"
+	_, err = executor.Execute(context.Background(), "TestExecute", session, stmt, nil)
+	wantErr = "vindex test_lookup defined with owner test not xyz"
+	if err == nil || err.Error() != wantErr {
+		t.Errorf("got %v want err %s", err, wantErr)
+	}
+
+	stmt = "alter table test2 add vindex test_lookup (c1,c2) using lookup with owner=`test`, foo=bar"
+	_, err = executor.Execute(context.Background(), "TestExecute", session, stmt, nil)
+	wantErr = "vindex test_lookup defined with different parameters"
+	if err == nil || err.Error() != wantErr {
+		t.Errorf("got %v want err %s", err, wantErr)
+	}
+
+	stmt = "alter table nonexistent drop vindex test_lookup"
+	_, err = executor.Execute(context.Background(), "TestExecute", session, stmt, nil)
+	wantErr = "table TestExecutor.nonexistent not defined in vschema"
+	if err == nil || err.Error() != wantErr {
+		t.Errorf("got %v want err %s", err, wantErr)
+	}
+
+	stmt = "alter table nonexistent drop vindex test_lookup"
+	_, err = executor.Execute(context.Background(), "TestExecute", NewSafeSession(&vtgatepb.Session{}), stmt, nil)
+	wantErr = errNoKeyspace.Error()
+	if err == nil || err.Error() != wantErr {
+		t.Errorf("got %v want err %s", err, wantErr)
+	}
+
+	stmt = "alter table nowhere.nohow drop vindex test_lookup"
+	_, err = executor.Execute(context.Background(), "TestExecute", session, stmt, nil)
+	wantErr = "keyspace nowhere not defined in vschema"
+	if err == nil || err.Error() != wantErr {
+		t.Errorf("got %v want err %s", err, wantErr)
+	}
+
+	stmt = "alter table test drop vindex test_lookup"
+	_, err = executor.Execute(context.Background(), "TestExecute", session, stmt, nil)
+	wantErr = "vindex test_lookup not defined in table TestExecutor.test"
+	if err == nil || err.Error() != wantErr {
+		t.Errorf("got %v want err %s", err, wantErr)
+	}
+
+	// no queries should have gone to any tablets
+	wantCount := []int64{0, 0, 0}
+	gotCount := []int64{
+		sbc1.ExecCount.Get(),
+		sbc2.ExecCount.Get(),
+		sbclookup.ExecCount.Get(),
+	}
+	if !reflect.DeepEqual(gotCount, wantCount) {
+		t.Errorf("Exec %s: %v, want %v", "", gotCount, wantCount)
+	}
+}
+
+func TestExecutorVindexDDLACL(t *testing.T) {
+	executor, _, _, _ := createExecutorEnv()
+	ks := "TestExecutor"
+	session := NewSafeSession(&vtgatepb.Session{TargetString: ks})
+
+	ctxRedUser := callerid.NewContext(context.Background(), &vtrpcpb.CallerID{}, &querypb.VTGateCallerID{Username: "redUser"})
+	ctxBlueUser := callerid.NewContext(context.Background(), &vtrpcpb.CallerID{}, &querypb.VTGateCallerID{Username: "blueUser"})
+
+	// test that by default no users can perform the operation
+	stmt := "create vindex test_hash using hash"
+	authErr := "not authorized to perform vschema operations"
+	_, err := executor.Execute(ctxRedUser, "TestExecute", session, stmt, nil)
+	if err == nil || err.Error() != authErr {
+		t.Errorf("expected error '%s' got '%v'", authErr, err)
+	}
+
+	_, err = executor.Execute(ctxBlueUser, "TestExecute", session, stmt, nil)
+	if err == nil || err.Error() != authErr {
+		t.Errorf("expected error '%s' got '%v'", authErr, err)
+	}
+
+	// test when all users are enabled
+	*vschemaacl.AuthorizedDDLUsers = "%"
+	vschemaacl.Init()
+	_, err = executor.Execute(ctxRedUser, "TestExecute", session, stmt, nil)
+	if err != nil {
+		t.Errorf("unexpected error '%v'", err)
+	}
+	stmt = "create vindex test_hash2 using hash"
+	_, err = executor.Execute(ctxBlueUser, "TestExecute", session, stmt, nil)
+	if err != nil {
+		t.Errorf("unexpected error '%v'", err)
+	}
+
+	// test when only one user is enabled
+	*vschemaacl.AuthorizedDDLUsers = "orangeUser, blueUser, greenUser"
+	vschemaacl.Init()
+	_, err = executor.Execute(ctxRedUser, "TestExecute", session, stmt, nil)
+	if err == nil || err.Error() != authErr {
+		t.Errorf("expected error '%s' got '%v'", authErr, err)
+	}
+	stmt = "create vindex test_hash3 using hash"
+	_, err = executor.Execute(ctxBlueUser, "TestExecute", session, stmt, nil)
+	if err != nil {
+		t.Errorf("unexpected error '%v'", err)
+	}
+
+	// restore the disallowed state
+	*vschemaacl.AuthorizedDDLUsers = ""
+}
+
 func TestExecutorUnrecognized(t *testing.T) {
 	executor, _, _, _ := createExecutorEnv()
 	_, err := executor.Execute(context.Background(), "TestExecute", NewSafeSession(&vtgatepb.Session{}), "invalid statement", nil)
diff --git a/go/vt/vtgate/sandbox_test.go b/go/vt/vtgate/sandbox_test.go
index 58d1c624d2d..97c10015a93 100644
--- a/go/vt/vtgate/sandbox_test.go
+++ b/go/vt/vtgate/sandbox_test.go
@@ -26,6 +26,7 @@ import (
 	"vitess.io/vitess/go/vt/grpcclient"
 	"vitess.io/vitess/go/vt/key"
 	"vitess.io/vitess/go/vt/topo"
+	"vitess.io/vitess/go/vt/topo/memorytopo"
 	"vitess.io/vitess/go/vt/vterrors"
 	"vitess.io/vitess/go/vt/vttablet/queryservice"
 	"vitess.io/vitess/go/vt/vttablet/sandboxconn"
@@ -218,11 +219,22 @@ func createUnshardedKeyspace() (*topodatapb.SrvKeyspace, error) {
 
 // sandboxTopo satisfies the srvtopo.Server interface
 type sandboxTopo struct {
+	topoServer *topo.Server
+}
+
+// newSandboxForCells creates a new topo with a backing memory topo for
+// the given cells.
+//
+// when this version is used, WatchSrvVSchema can properly simulate watches
+func newSandboxForCells(cells []string) *sandboxTopo {
+	return &sandboxTopo{
+		topoServer: memorytopo.NewServer(cells...),
+	}
 }
 
 // GetTopoServer is part of the srvtopo.Server interface
 func (sct *sandboxTopo) GetTopoServer() *topo.Server {
-	return nil
+	return sct.topoServer
 }
 
 // GetSrvKeyspaceNames is part of the srvtopo.Server interface.
@@ -274,8 +286,27 @@ func (sct *sandboxTopo) GetSrvKeyspace(ctx context.Context, cell, keyspace strin
 }
 
 // WatchSrvVSchema is part of the srvtopo.Server interface.
+//
+// If the sandbox was created with a backing topo service, piggy back on it
+// to properly simulate watches, otherwise just immediately call back the
+// caller.
 func (sct *sandboxTopo) WatchSrvVSchema(ctx context.Context, cell string, callback func(*vschemapb.SrvVSchema, error)) {
-	callback(getSandboxSrvVSchema(), nil)
+	srvVSchema := getSandboxSrvVSchema()
+
+	if sct.topoServer == nil {
+		callback(srvVSchema, nil)
+		return
+	}
+
+	sct.topoServer.UpdateSrvVSchema(ctx, cell, srvVSchema)
+	current, updateChan, _ := sct.topoServer.WatchSrvVSchema(ctx, cell)
+	callback(current.Value, nil)
+	go func() {
+		for {
+			update := <-updateChan
+			callback(update.Value, update.Err)
+		}
+	}()
 }
 
 func sandboxDialer(tablet *topodatapb.Tablet, failFast grpcclient.FailFast) (queryservice.QueryService, error) {
diff --git a/go/vt/vtgate/vschema_manager.go b/go/vt/vtgate/vschema_manager.go
new file mode 100644
index 00000000000..bec15628348
--- /dev/null
+++ b/go/vt/vtgate/vschema_manager.go
@@ -0,0 +1,149 @@
+/*
+Copyright 2017 Google Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package vtgate
+
+import (
+	"context"
+	"fmt"
+	"sync"
+
+	log "github.com/golang/glog"
+	"github.com/golang/protobuf/proto"
+
+	"vitess.io/vitess/go/vt/topo"
+	"vitess.io/vitess/go/vt/vtgate/vindexes"
+
+	vschemapb "vitess.io/vitess/go/vt/proto/vschema"
+)
+
+// VSchemaManager is used to watch for updates to the vschema and to implement
+// the DDL commands to add / remove vindexes
+type VSchemaManager struct {
+	e                 *Executor
+	mu                sync.Mutex
+	currentSrvVschema *vschemapb.SrvVSchema
+}
+
+// GetCurrentSrvVschema returns a copy of the latest SrvVschema from the
+// topo watch
+func (vm *VSchemaManager) GetCurrentSrvVschema() *vschemapb.SrvVSchema {
+	vm.mu.Lock()
+	defer vm.mu.Unlock()
+	return proto.Clone(vm.currentSrvVschema).(*vschemapb.SrvVSchema)
+}
+
+// watchSrvVSchema watches the SrvVSchema from the topo. The function does
+// not return an error. It instead logs warnings on failure.
+// The SrvVSchema object is roll-up of all the Keyspace information,
+// so when a keyspace is added or removed, it will be properly updated.
+//
+// This function will wait until the first value has either been processed
+// or triggered an error before returning.
+func (vm *VSchemaManager) watchSrvVSchema(ctx context.Context, cell string) {
+	vm.e.serv.WatchSrvVSchema(ctx, cell, func(v *vschemapb.SrvVSchema, err error) {
+		// Create a closure to save the vschema. If the value
+		// passed is nil, it means we encountered an error and
+		// we don't know the real value. In this case, we want
+		// to use the previous value if it was set, or an
+		// empty vschema if it wasn't.
+		switch err {
+		case nil:
+			// Good case, we can try to save that value.
+		case topo.ErrNoNode:
+			// If the SrvVschema disappears, we need to clear our record.
+			// Otherwise, keep what we already had before.
+			v = nil
+		default:
+			// Watch error, increment our counters.
+			if vschemaCounters != nil {
+				vschemaCounters.Add("WatchError", 1)
+			}
+		}
+
+		// keep a copy of the latest SrvVschema
+		vm.mu.Lock()
+		vm.currentSrvVschema = v
+		vm.mu.Unlock()
+
+		// Transform the provided SrvVSchema into a VSchema.
+		var vschema *vindexes.VSchema
+		if v != nil {
+			vschema, err = vindexes.BuildVSchema(v)
+			if err != nil {
+				log.Warningf("Error creating VSchema for cell %v (will try again next update): %v", cell, err)
+				v = nil
+				err = fmt.Errorf("Error creating VSchema for cell %v: %v", cell, err)
+				if vschemaCounters != nil {
+					vschemaCounters.Add("Parsing", 1)
+				}
+			}
+		}
+		if v == nil {
+			// We encountered an error, build an empty vschema.
+			vschema, _ = vindexes.BuildVSchema(&vschemapb.SrvVSchema{})
+		}
+
+		// Build the display version. At this point, three cases:
+		// - v is nil, vschema is empty, and err is set:
+		//     1. when the watch returned an error.
+		//     2. when BuildVSchema failed.
+		// - v is set, vschema is full, and err is nil:
+		//     3. when everything worked.
+		errorMessage := ""
+		if err != nil {
+			errorMessage = err.Error()
+		}
+		stats := NewVSchemaStats(vschema, errorMessage)
+
+		// save our value. if there was an error, then keep the
+		// existing vschema instead of overwriting it.
+		if v == nil && vm.e.vschema != nil {
+			vschema = vm.e.vschema
+		}
+
+		vm.e.SaveVSchema(vschema, stats)
+	})
+}
+
+// UpdateVSchema propagates the updated vschema to the topo. The entry for
+// the given keyspace is updated in the global topo, and the full SrvVSchema
+// is updated in all known cells.
+func (vm *VSchemaManager) UpdateVSchema(ctx context.Context, keyspace string, vschema *vschemapb.SrvVSchema) error {
+	// update the global vschema, then update the SrvVschema for
+	// each cell
+	ks, _ := vschema.Keyspaces[keyspace]
+	err := vm.e.serv.GetTopoServer().SaveVSchema(ctx, keyspace, ks)
+	if err != nil {
+		return err
+	}
+
+	cells, err := vm.e.serv.GetTopoServer().GetKnownCells(ctx)
+	if err != nil {
+		return err
+	}
+
+	// even if one cell fails, continue to try the others
+	for _, cell := range cells {
+		cellErr := vm.e.serv.GetTopoServer().UpdateSrvVSchema(ctx, cell, vschema)
+		if cellErr != nil {
+			err = cellErr
+			log.Errorf("error updating vschema in cell %s: %v", cell, cellErr)
+		}
+	}
+
+	return err
+}
diff --git a/go/vt/vtgate/vschemaacl/vschemaacl.go b/go/vt/vtgate/vschemaacl/vschemaacl.go
new file mode 100644
index 00000000000..d4093aa42b4
--- /dev/null
+++ b/go/vt/vtgate/vschemaacl/vschemaacl.go
@@ -0,0 +1,64 @@
+/*
+Copyright 2018 Google Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package vschemaacl
+
+import (
+	"flag"
+	"strings"
+
+	querypb "vitess.io/vitess/go/vt/proto/query"
+)
+
+var (
+	// AuthorizedDDLUsers specifies the users that can perform ddl operations
+	AuthorizedDDLUsers = flag.String("vschema_ddl_authorized_users", "", "List of users authorized to execute vschema ddl operations, or '%' to allow all users.")
+
+	// ddlAllowAll is true if the special value of "*" was specified
+	allowAll bool
+
+	// ddlACL contains a set of allowed usernames
+	acl map[string]struct{}
+)
+
+// Init parses the users option and sets allowAll / acl accordingly
+func Init() {
+	acl = make(map[string]struct{})
+	allowAll = false
+
+	if *AuthorizedDDLUsers == "%" {
+		allowAll = true
+		return
+	} else if *AuthorizedDDLUsers == "" {
+		return
+	}
+
+	for _, user := range strings.Split(*AuthorizedDDLUsers, ",") {
+		user = strings.TrimSpace(user)
+		acl[user] = struct{}{}
+	}
+}
+
+// Authorized returns true if the given caller is allowed to execute vschema operations
+func Authorized(caller *querypb.VTGateCallerID) bool {
+	if allowAll {
+		return true
+	}
+
+	user := caller.GetUsername()
+	_, ok := acl[user]
+	return ok
+}
diff --git a/go/vt/vtgate/vschemaacl/vschemaacl_test.go b/go/vt/vtgate/vschemaacl/vschemaacl_test.go
new file mode 100644
index 00000000000..da588a65d98
--- /dev/null
+++ b/go/vt/vtgate/vschemaacl/vschemaacl_test.go
@@ -0,0 +1,70 @@
+/*
+Copyright 2018 Google Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package vschemaacl
+
+import (
+	"testing"
+
+	querypb "vitess.io/vitess/go/vt/proto/query"
+)
+
+func TestVschemaAcl(t *testing.T) {
+	redUser := querypb.VTGateCallerID{Username: "redUser"}
+	yellowUser := querypb.VTGateCallerID{Username: "yellowUser"}
+
+	// By default no users are allowed in
+	if Authorized(&redUser) {
+		t.Errorf("user should not be authorized")
+	}
+	if Authorized(&yellowUser) {
+		t.Errorf("user should not be authorized")
+	}
+
+	// Test wildcard
+	*AuthorizedDDLUsers = "%"
+	Init()
+
+	if !Authorized(&redUser) {
+		t.Errorf("user should be authorized")
+	}
+	if !Authorized(&yellowUser) {
+		t.Errorf("user should be authorized")
+	}
+
+	// Test user list
+	*AuthorizedDDLUsers = "oneUser, twoUser, redUser, blueUser"
+	Init()
+
+	if !Authorized(&redUser) {
+		t.Errorf("user should be authorized")
+	}
+	if Authorized(&yellowUser) {
+		t.Errorf("user should not be authorized")
+	}
+
+	// Revert to baseline state for other tests
+	*AuthorizedDDLUsers = ""
+	Init()
+
+	// By default no users are allowed in
+	if Authorized(&redUser) {
+		t.Errorf("user should not be authorized")
+	}
+	if Authorized(&yellowUser) {
+		t.Errorf("user should not be authorized")
+	}
+}
diff --git a/go/vt/vttablet/tabletserver/query_engine_test.go b/go/vt/vttablet/tabletserver/query_engine_test.go
index a7b279214dd..264faccbddf 100644
--- a/go/vt/vttablet/tabletserver/query_engine_test.go
+++ b/go/vt/vttablet/tabletserver/query_engine_test.go
@@ -279,26 +279,17 @@ func runConsolidatedQuery(t *testing.T, sql string) *QueryEngine {
 	qe.Open()
 	defer qe.Close()
 
-	c := make(chan int)
-	done := make(chan int)
-	query := func(sql string, waiter chan int, done chan int) {
-		q, ok := qe.consolidator.Create(string(sql))
-		if ok {
-			q.Result, q.Err = "ok", nil
-			<-waiter
-			q.Broadcast()
-		} else {
-			waiter <- 1
-			q.Wait()
-
-			done <- 1
-		}
+	r1, ok := qe.consolidator.Create(sql)
+	if !ok {
+		t.Errorf("expected first consolidator ok")
+	}
+	r2, ok := qe.consolidator.Create(sql)
+	if ok {
+		t.Errorf("expected second consolidator not ok")
 	}
 
-	go query(sql, c, done)
-	go query(sql, c, done)
-
-	<-done
+	r1.Broadcast()
+	r2.Wait()
 
 	return qe
 }
@@ -311,8 +302,8 @@ func TestConsolidationsUIRedaction(t *testing.T) {
 
 	request, _ := http.NewRequest("GET", "/debug/consolidations", nil)
 
-	sql := "select * from test_db_01 where column = 'secret'"
-	redactedSQL := "select * from test_db_01 where `column` = :redacted1"
+	sql := "select * from test_db_01 where col = 'secret'"
+	redactedSQL := "select * from test_db_01 where col = :redacted1"
 
 	// First with the redaction off
 	*streamlog.RedactDebugUIQueries = false