diff --git a/go/vt/sqlparser/ast.go b/go/vt/sqlparser/ast.go
index 315e5139279..f569d97a838 100644
--- a/go/vt/sqlparser/ast.go
+++ b/go/vt/sqlparser/ast.go
@@ -1361,11 +1361,47 @@ func (c *ConstraintDefinition) walkSubtree(visit Visit) error {
 	return Walk(visit, c.Details)
 }
 
+// ReferenceAction indicates the action takes by a referential constraint e.g.
+// the `CASCADE` in a `FOREIGN KEY .. ON DELETE CASCADE` table definition.
+type ReferenceAction int
+
+// These map to the SQL-defined reference actions.
+// See https://dev.mysql.com/doc/refman/8.0/en/create-table-foreign-keys.html#foreign-keys-referential-actions
+const (
+	// DefaultAction indicates no action was explicitly specified.
+	DefaultAction ReferenceAction = iota
+	Restrict
+	Cascade
+	NoAction
+	SetNull
+	SetDefault
+)
+
+func (a ReferenceAction) walkSubtree(visit Visit) error { return nil }
+
+// Format formats the node.
+func (a ReferenceAction) Format(buf *TrackedBuffer) {
+	switch a {
+	case Restrict:
+		buf.WriteString("restrict")
+	case Cascade:
+		buf.WriteString("cascade")
+	case NoAction:
+		buf.WriteString("no action")
+	case SetNull:
+		buf.WriteString("set null")
+	case SetDefault:
+		buf.WriteString("set default")
+	}
+}
+
 // ForeignKeyDefinition describes a foreign key in a CREATE TABLE statement
 type ForeignKeyDefinition struct {
 	Source            Columns
 	ReferencedTable   TableName
 	ReferencedColumns Columns
+	OnDelete          ReferenceAction
+	OnUpdate          ReferenceAction
 }
 
 var _ ConstraintInfo = &ForeignKeyDefinition{}
@@ -1373,6 +1409,12 @@ var _ ConstraintInfo = &ForeignKeyDefinition{}
 // Format formats the node.
 func (f *ForeignKeyDefinition) Format(buf *TrackedBuffer) {
 	buf.Myprintf("foreign key %v references %v %v", f.Source, f.ReferencedTable, f.ReferencedColumns)
+	if f.OnDelete != DefaultAction {
+		buf.Myprintf(" on delete %v", f.OnDelete)
+	}
+	if f.OnUpdate != DefaultAction {
+		buf.Myprintf(" on update %v", f.OnUpdate)
+	}
 }
 
 func (f *ForeignKeyDefinition) constraintInfo() {}
diff --git a/go/vt/sqlparser/parse_test.go b/go/vt/sqlparser/parse_test.go
index ce9a35721a2..caa09a5ce3b 100644
--- a/go/vt/sqlparser/parse_test.go
+++ b/go/vt/sqlparser/parse_test.go
@@ -1850,7 +1850,14 @@ func TestCreateTable(t *testing.T) {
 			"	Z int,\n" +
 			"	primary key (id, username),\n" +
 			"	key by_email (email(10), username),\n" +
-			"	constraint second_ibfk_1 foreign key (k, j) references simple (a, b)\n" +
+			"	constraint second_ibfk_1 foreign key (k, j) references simple (a, b),\n" +
+			"	constraint second_ibfk_1 foreign key (k, j) references simple (a, b) on delete restrict,\n" +
+			"	constraint second_ibfk_1 foreign key (k, j) references simple (a, b) on delete no action,\n" +
+			"	constraint second_ibfk_1 foreign key (k, j) references simple (a, b) on delete cascade on update set default,\n" +
+			"	constraint second_ibfk_1 foreign key (k, j) references simple (a, b) on delete set default on update set null,\n" +
+			"	constraint second_ibfk_1 foreign key (k, j) references simple (a, b) on delete set null on update restrict,\n" +
+			"	constraint second_ibfk_1 foreign key (k, j) references simple (a, b) on update no action,\n" +
+			"	constraint second_ibfk_1 foreign key (k, j) references simple (a, b) on update cascade\n" +
 			")",
 
 		// table options
diff --git a/go/vt/sqlparser/sql.go b/go/vt/sqlparser/sql.go
index fd43a897cc9..4b21cdb5d0b 100644
--- a/go/vt/sqlparser/sql.go
+++ b/go/vt/sqlparser/sql.go
@@ -95,6 +95,7 @@ type yySymType struct {
 	indexColumns         []*IndexColumn
 	constraintDefinition *ConstraintDefinition
 	constraintInfo       ConstraintInfo
+	ReferenceAction      ReferenceAction
 	partDefs             []*PartitionDefinition
 	partDef              *PartitionDefinition
 	partSpec             *PartitionSpec
@@ -213,131 +214,135 @@ const IF = 57451
 const UNIQUE = 57452
 const PRIMARY = 57453
 const COLUMN = 57454
-const CONSTRAINT = 57455
-const SPATIAL = 57456
-const FULLTEXT = 57457
-const FOREIGN = 57458
-const REFERENCES = 57459
-const KEY_BLOCK_SIZE = 57460
-const SHOW = 57461
-const DESCRIBE = 57462
-const EXPLAIN = 57463
-const DATE = 57464
-const ESCAPE = 57465
-const REPAIR = 57466
-const OPTIMIZE = 57467
-const TRUNCATE = 57468
-const MAXVALUE = 57469
-const PARTITION = 57470
-const REORGANIZE = 57471
-const LESS = 57472
-const THAN = 57473
-const PROCEDURE = 57474
-const TRIGGER = 57475
-const VINDEX = 57476
-const VINDEXES = 57477
-const STATUS = 57478
-const VARIABLES = 57479
-const BEGIN = 57480
-const START = 57481
-const TRANSACTION = 57482
-const COMMIT = 57483
-const ROLLBACK = 57484
-const BIT = 57485
-const TINYINT = 57486
-const SMALLINT = 57487
-const MEDIUMINT = 57488
-const INT = 57489
-const INTEGER = 57490
-const BIGINT = 57491
-const INTNUM = 57492
-const REAL = 57493
-const DOUBLE = 57494
-const FLOAT_TYPE = 57495
-const DECIMAL = 57496
-const NUMERIC = 57497
-const TIME = 57498
-const TIMESTAMP = 57499
-const DATETIME = 57500
-const YEAR = 57501
-const CHAR = 57502
-const VARCHAR = 57503
-const BOOL = 57504
-const CHARACTER = 57505
-const VARBINARY = 57506
-const NCHAR = 57507
-const TEXT = 57508
-const TINYTEXT = 57509
-const MEDIUMTEXT = 57510
-const LONGTEXT = 57511
-const BLOB = 57512
-const TINYBLOB = 57513
-const MEDIUMBLOB = 57514
-const LONGBLOB = 57515
-const JSON = 57516
-const ENUM = 57517
-const GEOMETRY = 57518
-const POINT = 57519
-const LINESTRING = 57520
-const POLYGON = 57521
-const GEOMETRYCOLLECTION = 57522
-const MULTIPOINT = 57523
-const MULTILINESTRING = 57524
-const MULTIPOLYGON = 57525
-const NULLX = 57526
-const AUTO_INCREMENT = 57527
-const APPROXNUM = 57528
-const SIGNED = 57529
-const UNSIGNED = 57530
-const ZEROFILL = 57531
-const COLLATION = 57532
-const DATABASES = 57533
-const TABLES = 57534
-const VITESS_KEYSPACES = 57535
-const VITESS_SHARDS = 57536
-const VITESS_TABLETS = 57537
-const VSCHEMA_TABLES = 57538
-const VITESS_TARGET = 57539
-const FULL = 57540
-const PROCESSLIST = 57541
-const COLUMNS = 57542
-const NAMES = 57543
-const CHARSET = 57544
-const GLOBAL = 57545
-const SESSION = 57546
-const ISOLATION = 57547
-const LEVEL = 57548
-const READ = 57549
-const WRITE = 57550
-const ONLY = 57551
-const REPEATABLE = 57552
-const COMMITTED = 57553
-const UNCOMMITTED = 57554
-const SERIALIZABLE = 57555
-const CURRENT_TIMESTAMP = 57556
-const DATABASE = 57557
-const CURRENT_DATE = 57558
-const CURRENT_TIME = 57559
-const LOCALTIME = 57560
-const LOCALTIMESTAMP = 57561
-const UTC_DATE = 57562
-const UTC_TIME = 57563
-const UTC_TIMESTAMP = 57564
-const REPLACE = 57565
-const CONVERT = 57566
-const CAST = 57567
-const SUBSTR = 57568
-const SUBSTRING = 57569
-const GROUP_CONCAT = 57570
-const SEPARATOR = 57571
-const MATCH = 57572
-const AGAINST = 57573
-const BOOLEAN = 57574
-const LANGUAGE = 57575
-const WITH = 57576
-const QUERY = 57577
-const EXPANSION = 57578
-const UNUSED = 57579
+const SPATIAL = 57455
+const FULLTEXT = 57456
+const KEY_BLOCK_SIZE = 57457
+const ACTION = 57458
+const CASCADE = 57459
+const CONSTRAINT = 57460
+const FOREIGN = 57461
+const NO = 57462
+const REFERENCES = 57463
+const RESTRICT = 57464
+const SHOW = 57465
+const DESCRIBE = 57466
+const EXPLAIN = 57467
+const DATE = 57468
+const ESCAPE = 57469
+const REPAIR = 57470
+const OPTIMIZE = 57471
+const TRUNCATE = 57472
+const MAXVALUE = 57473
+const PARTITION = 57474
+const REORGANIZE = 57475
+const LESS = 57476
+const THAN = 57477
+const PROCEDURE = 57478
+const TRIGGER = 57479
+const VINDEX = 57480
+const VINDEXES = 57481
+const STATUS = 57482
+const VARIABLES = 57483
+const BEGIN = 57484
+const START = 57485
+const TRANSACTION = 57486
+const COMMIT = 57487
+const ROLLBACK = 57488
+const BIT = 57489
+const TINYINT = 57490
+const SMALLINT = 57491
+const MEDIUMINT = 57492
+const INT = 57493
+const INTEGER = 57494
+const BIGINT = 57495
+const INTNUM = 57496
+const REAL = 57497
+const DOUBLE = 57498
+const FLOAT_TYPE = 57499
+const DECIMAL = 57500
+const NUMERIC = 57501
+const TIME = 57502
+const TIMESTAMP = 57503
+const DATETIME = 57504
+const YEAR = 57505
+const CHAR = 57506
+const VARCHAR = 57507
+const BOOL = 57508
+const CHARACTER = 57509
+const VARBINARY = 57510
+const NCHAR = 57511
+const TEXT = 57512
+const TINYTEXT = 57513
+const MEDIUMTEXT = 57514
+const LONGTEXT = 57515
+const BLOB = 57516
+const TINYBLOB = 57517
+const MEDIUMBLOB = 57518
+const LONGBLOB = 57519
+const JSON = 57520
+const ENUM = 57521
+const GEOMETRY = 57522
+const POINT = 57523
+const LINESTRING = 57524
+const POLYGON = 57525
+const GEOMETRYCOLLECTION = 57526
+const MULTIPOINT = 57527
+const MULTILINESTRING = 57528
+const MULTIPOLYGON = 57529
+const NULLX = 57530
+const AUTO_INCREMENT = 57531
+const APPROXNUM = 57532
+const SIGNED = 57533
+const UNSIGNED = 57534
+const ZEROFILL = 57535
+const COLLATION = 57536
+const DATABASES = 57537
+const TABLES = 57538
+const VITESS_KEYSPACES = 57539
+const VITESS_SHARDS = 57540
+const VITESS_TABLETS = 57541
+const VSCHEMA_TABLES = 57542
+const VITESS_TARGET = 57543
+const FULL = 57544
+const PROCESSLIST = 57545
+const COLUMNS = 57546
+const NAMES = 57547
+const CHARSET = 57548
+const GLOBAL = 57549
+const SESSION = 57550
+const ISOLATION = 57551
+const LEVEL = 57552
+const READ = 57553
+const WRITE = 57554
+const ONLY = 57555
+const REPEATABLE = 57556
+const COMMITTED = 57557
+const UNCOMMITTED = 57558
+const SERIALIZABLE = 57559
+const CURRENT_TIMESTAMP = 57560
+const DATABASE = 57561
+const CURRENT_DATE = 57562
+const CURRENT_TIME = 57563
+const LOCALTIME = 57564
+const LOCALTIMESTAMP = 57565
+const UTC_DATE = 57566
+const UTC_TIME = 57567
+const UTC_TIMESTAMP = 57568
+const REPLACE = 57569
+const CONVERT = 57570
+const CAST = 57571
+const SUBSTR = 57572
+const SUBSTRING = 57573
+const GROUP_CONCAT = 57574
+const SEPARATOR = 57575
+const MATCH = 57576
+const AGAINST = 57577
+const BOOLEAN = 57578
+const LANGUAGE = 57579
+const WITH = 57580
+const QUERY = 57581
+const EXPANSION = 57582
+const UNUSED = 57583
 
 var yyToknames = [...]string{
 	"$end",
@@ -469,12 +474,16 @@ var yyToknames = [...]string{
 	"UNIQUE",
 	"PRIMARY",
 	"COLUMN",
-	"CONSTRAINT",
 	"SPATIAL",
 	"FULLTEXT",
+	"KEY_BLOCK_SIZE",
+	"ACTION",
+	"CASCADE",
+	"CONSTRAINT",
 	"FOREIGN",
+	"NO",
 	"REFERENCES",
-	"KEY_BLOCK_SIZE",
+	"RESTRICT",
 	"SHOW",
 	"DESCRIBE",
 	"EXPLAIN",
@@ -611,1202 +620,1196 @@ var yyExca = [...]int{
 	5, 28,
 	-2, 4,
 	-1, 36,
-	153, 274,
-	154, 274,
-	-2, 266,
-	-1, 250,
-	111, 601,
-	-2, 597,
-	-1, 251,
-	111, 602,
-	-2, 598,
-	-1, 321,
-	81, 764,
+	157, 284,
+	158, 284,
+	-2, 276,
+	-1, 253,
+	111, 611,
+	-2, 607,
+	-1, 254,
+	111, 612,
+	-2, 608,
+	-1, 324,
+	81, 777,
 	-2, 59,
-	-1, 322,
-	81, 724,
+	-1, 325,
+	81, 735,
 	-2, 60,
-	-1, 327,
-	81, 706,
-	-2, 563,
-	-1, 329,
-	81, 745,
-	-2, 565,
-	-1, 597,
+	-1, 330,
+	81, 717,
+	-2, 573,
+	-1, 332,
+	81, 756,
+	-2, 575,
+	-1, 600,
 	53, 42,
 	55, 42,
 	-2, 44,
-	-1, 733,
-	111, 604,
-	-2, 600,
-	-1, 945,
+	-1, 736,
+	111, 614,
+	-2, 610,
+	-1, 948,
 	5, 29,
-	-2, 408,
-	-1, 970,
+	-2, 418,
+	-1, 973,
 	5, 28,
-	-2, 538,
-	-1, 1196,
+	-2, 548,
+	-1, 1199,
 	5, 29,
-	-2, 539,
-	-1, 1241,
+	-2, 549,
+	-1, 1244,
 	5, 28,
-	-2, 541,
-	-1, 1305,
+	-2, 551,
+	-1, 1308,
 	5, 29,
-	-2, 542,
+	-2, 552,
 }
 
 const yyPrivate = 57344
 
-const yyLast = 11325
+const yyLast = 11278
 
 var yyAct = [...]int{
 
-	251, 1296, 884, 544, 669, 795, 1252, 1103, 255, 1131,
-	831, 813, 1034, 1202, 835, 229, 281, 973, 543, 3,
-	1104, 1100, 591, 834, 911, 796, 589, 844, 989, 1077,
-	878, 80, 758, 937, 768, 194, 698, 1037, 194, 1025,
-	55, 848, 326, 607, 735, 784, 765, 476, 978, 482,
-	874, 606, 425, 578, 320, 792, 308, 767, 488, 593,
-	253, 496, 307, 238, 194, 194, 80, 919, 228, 317,
-	194, 315, 194, 558, 80, 54, 864, 221, 1329, 1316,
-	1327, 1303, 1324, 885, 1315, 257, 1302, 1095, 1190, 430,
-	306, 59, 1262, 1125, 313, 901, 242, 451, 1139, 1140,
-	1141, 189, 185, 186, 187, 997, 1144, 1142, 996, 900,
-	826, 998, 1126, 1127, 827, 828, 61, 62, 63, 64,
-	65, 222, 223, 224, 225, 608, 227, 609, 226, 191,
-	1016, 23, 24, 50, 26, 27, 467, 905, 857, 1215,
-	439, 1230, 865, 468, 465, 1179, 899, 1177, 220, 311,
-	42, 462, 463, 1326, 1078, 28, 47, 48, 1323, 316,
-	1297, 453, 1058, 455, 427, 793, 429, 1253, 1289, 849,
-	440, 814, 816, 677, 433, 37, 1260, 183, 668, 52,
-	1255, 436, 182, 194, 183, 194, 1080, 858, 988, 452,
-	454, 194, 987, 986, 1045, 896, 893, 894, 194, 892,
-	428, 1282, 80, 80, 80, 80, 197, 80, 1055, 851,
-	184, 532, 533, 188, 1057, 851, 80, 1199, 1082, 1064,
-	1086, 953, 1081, 1043, 1079, 903, 906, 931, 707, 1084,
-	500, 446, 510, 832, 520, 520, 699, 704, 1083, 30,
-	31, 33, 32, 35, 1009, 80, 815, 913, 495, 1254,
-	1287, 1085, 1087, 485, 494, 493, 1158, 1148, 1045, 976,
-	898, 36, 43, 44, 865, 610, 45, 46, 34, 1097,
-	1143, 495, 450, 484, 785, 1261, 1259, 437, 672, 438,
-	38, 39, 897, 40, 41, 445, 1301, 1043, 1044, 710,
-	711, 851, 447, 1049, 1046, 1039, 1040, 1047, 1042, 1041,
-	458, 474, 1014, 850, 472, 473, 194, 1149, 1056, 850,
-	1054, 1048, 1291, 194, 194, 194, 700, 1051, 490, 80,
-	426, 902, 1307, 426, 912, 80, 1309, 486, 442, 443,
-	444, 432, 68, 950, 904, 1221, 494, 493, 530, 1277,
-	509, 508, 518, 519, 511, 512, 513, 514, 515, 516,
-	517, 510, 1044, 495, 520, 424, 1220, 1049, 1046, 1039,
-	1040, 1047, 1042, 1041, 742, 51, 323, 69, 560, 561,
-	562, 563, 564, 565, 566, 1048, 493, 1029, 740, 741,
-	739, 1038, 494, 493, 1288, 850, 598, 949, 604, 948,
-	847, 845, 495, 843, 846, 1028, 849, 854, 311, 495,
-	573, 785, 855, 960, 181, 494, 493, 434, 435, 597,
-	509, 508, 518, 519, 511, 512, 513, 514, 515, 516,
-	517, 510, 495, 52, 520, 194, 725, 727, 728, 1237,
-	80, 726, 1017, 738, 1186, 475, 194, 194, 80, 759,
-	194, 760, 1218, 194, 282, 49, 999, 194, 1000, 80,
-	80, 80, 80, 80, 80, 80, 80, 1061, 938, 928,
-	929, 930, 1026, 80, 80, 1245, 1325, 305, 1312, 475,
-	194, 509, 508, 518, 519, 511, 512, 513, 514, 515,
-	516, 517, 510, 21, 1285, 520, 494, 493, 80, 686,
-	1245, 1294, 194, 1099, 49, 1245, 1257, 475, 80, 1278,
-	712, 706, 234, 495, 1245, 475, 1245, 1246, 312, 1211,
-	1210, 1122, 475, 1266, 684, 1198, 475, 1155, 1154, 618,
-	736, 1135, 511, 512, 513, 514, 515, 516, 517, 510,
-	674, 675, 520, 1134, 678, 1151, 1152, 681, 705, 1151,
-	1150, 233, 80, 733, 513, 514, 515, 516, 517, 510,
-	714, 1010, 520, 1005, 494, 493, 943, 475, 1265, 729,
-	777, 780, 887, 761, 701, 772, 786, 683, 731, 575,
-	475, 495, 682, 194, 23, 673, 194, 194, 194, 194,
-	194, 770, 475, 797, 671, 666, 721, 601, 194, 737,
-	448, 194, 248, 762, 763, 194, 617, 616, 968, 441,
-	194, 194, 969, 1145, 80, 773, 774, 23, 1067, 772,
-	56, 781, 852, 782, 974, 789, 975, 80, 1101, 323,
-	574, 974, 52, 975, 955, 788, 821, 790, 791, 602,
-	820, 600, 600, 799, 800, 1240, 802, 770, 798, 952,
-	810, 801, 1194, 23, 575, 575, 457, 457, 457, 457,
-	943, 457, 943, 819, 818, 52, 235, 824, 823, 575,
-	457, 311, 311, 311, 311, 311, 974, 794, 954, 194,
-	839, 1157, 80, 1153, 80, 1001, 311, 825, 194, 49,
-	943, 194, 80, 951, 603, 311, 580, 583, 584, 585,
-	581, 52, 582, 586, 529, 822, 880, 531, 194, 52,
-	194, 194, 708, 1317, 52, 1225, 859, 879, 866, 867,
-	868, 456, 1136, 876, 877, 1116, 1004, 979, 980, 720,
-	875, 870, 869, 670, 882, 542, 1138, 546, 547, 548,
-	549, 550, 551, 552, 553, 554, 1101, 557, 559, 559,
-	559, 559, 559, 559, 559, 559, 567, 568, 569, 570,
-	733, 1030, 982, 680, 280, 469, 736, 590, 920, 809,
-	921, 584, 585, 883, 271, 270, 273, 274, 275, 276,
-	985, 807, 907, 272, 277, 908, 808, 927, 805, 984,
-	804, 803, 1321, 806, 933, 78, 1314, 713, 239, 240,
-	489, 1063, 910, 580, 583, 584, 585, 581, 916, 582,
-	586, 732, 1320, 979, 980, 487, 926, 925, 1021, 615,
-	477, 970, 449, 1013, 860, 861, 862, 863, 80, 1192,
-	325, 194, 478, 1293, 942, 737, 1292, 1238, 431, 959,
-	871, 872, 873, 1011, 1006, 80, 1226, 991, 889, 993,
-	957, 679, 588, 236, 237, 769, 771, 992, 489, 1002,
-	983, 534, 535, 536, 537, 538, 539, 540, 541, 924,
-	230, 787, 1271, 231, 56, 1270, 1228, 923, 975, 994,
-	470, 697, 491, 1279, 457, 1020, 1216, 1022, 1023, 1024,
-	703, 58, 457, 80, 80, 60, 80, 599, 1007, 1008,
-	53, 812, 1, 457, 457, 457, 457, 457, 457, 457,
-	457, 886, 1033, 895, 323, 1295, 311, 457, 457, 80,
-	1027, 1251, 1130, 842, 459, 460, 461, 836, 464, 833,
-	67, 423, 66, 194, 1286, 841, 840, 471, 1258, 1214,
-	853, 1050, 80, 1015, 856, 1137, 1290, 1018, 1019, 1012,
-	623, 621, 622, 620, 625, 624, 619, 1060, 205, 318,
-	587, 611, 881, 492, 70, 1053, 325, 325, 325, 325,
-	1052, 325, 891, 466, 207, 528, 922, 995, 1071, 1036,
-	325, 324, 80, 80, 1102, 1108, 49, 797, 1076, 1070,
-	1089, 709, 1088, 797, 481, 1269, 1105, 1227, 958, 555,
-	1107, 546, 783, 256, 724, 269, 733, 266, 1096, 498,
-	1112, 1110, 80, 268, 80, 80, 267, 715, 732, 967,
-	1124, 502, 254, 246, 1111, 310, 571, 1065, 1129, 579,
-	312, 312, 312, 312, 312, 1128, 577, 576, 981, 1146,
-	1147, 194, 1123, 1133, 977, 590, 309, 817, 1066, 80,
-	1189, 1276, 719, 25, 312, 57, 241, 19, 18, 17,
-	20, 16, 80, 194, 15, 14, 29, 13, 12, 80,
-	11, 10, 9, 940, 8, 80, 7, 941, 194, 6,
-	5, 4, 232, 325, 945, 946, 947, 22, 2, 612,
-	0, 0, 0, 956, 1167, 1166, 0, 0, 962, 0,
-	963, 964, 965, 966, 1168, 734, 0, 0, 743, 744,
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-	755, 756, 757, 1175, 0, 1159, 457, 80, 457, 80,
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+	0, 0, 193, 0, 198, 0, 0, 0, 0, 139,
+	0, 155, 105, 113, 0, 87, 0, 104, 131, 144,
+	148, 0, 0, 0, 96, 0, 146, 135, 167, 0,
+	136, 145, 117, 159, 140, 166, 199, 174, 157, 173,
+	82, 156, 165, 94, 149, 84, 163, 154, 123, 109,
+	110, 83, 0, 143, 99, 103, 98, 132, 160, 161,
+	97, 182, 88, 172, 86, 89, 171, 130, 158, 164,
+	124, 121, 85, 162, 122, 120, 112, 101, 106, 137,
+	119, 138, 107, 127, 126, 128, 0, 0, 0, 153,
+	169, 183, 91, 0, 0, 175, 176, 177, 178, 179,
+	0, 0, 92, 129, 90, 108, 150, 111, 118, 142,
+	181, 134, 147, 95, 168, 151, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 133, 0, 0, 0, 0,
+	0, 0, 0, 81, 100, 115, 180, 141, 102, 170,
+	114, 0, 116, 0, 0, 152, 125, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 79, 0, 0, 0, 0, 0,
+	0, 0, 0, 93, 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, 195,
-	0, 0, 0, 0, 137, 0, 0, 152, 104, 103,
-	142, 112, 0, 0, 0, 95, 0, 144, 133, 164,
-	0, 134, 143, 116, 156, 138, 163, 196, 171, 154,
-	170, 82, 153, 162, 93, 146, 84, 160, 151, 122,
-	108, 109, 83, 0, 141, 98, 102, 97, 130, 157,
-	158, 96, 179, 87, 169, 86, 88, 168, 129, 155,
-	161, 123, 120, 85, 159, 121, 119, 111, 100, 105,
-	135, 118, 136, 106, 126, 125, 127, 0, 0, 0,
-	150, 166, 180, 90, 0, 0, 172, 173, 174, 175,
-	176, 0, 0, 91, 128, 89, 107, 147, 110, 117,
-	140, 178, 132, 145, 94, 165, 148, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 131, 0, 0, 0,
-	0, 0, 0, 0, 81, 99, 114, 177, 139, 101,
-	167, 113, 0, 115, 0, 0, 149, 124, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 193, 0, 0, 0, 0,
-	0, 0, 0, 0, 92, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	198, 0, 0, 0, 0, 139, 0, 155, 105, 113,
+	0, 87, 0, 104, 131, 144, 148, 0, 0, 0,
+	96, 0, 146, 135, 167, 0, 136, 145, 117, 159,
+	140, 166, 199, 174, 157, 173, 82, 156, 165, 94,
+	149, 84, 163, 154, 123, 109, 110, 83, 0, 143,
+	99, 103, 98, 132, 160, 161, 97, 182, 88, 172,
+	86, 89, 171, 130, 158, 164, 124, 121, 85, 162,
+	122, 120, 112, 101, 106, 137, 119, 138, 107, 127,
+	126, 128, 0, 0, 0, 153, 169, 183, 91, 0,
+	0, 175, 176, 177, 178, 179, 0, 0, 92, 129,
+	90, 108, 150, 111, 118, 142, 181, 134, 147, 95,
+	168, 151, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 133, 0, 0, 0, 0, 0, 0, 0, 81,
+	100, 115, 180, 141, 102, 170, 114, 0, 116, 0,
+	0, 152, 125, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	196, 0, 0, 0, 0, 0, 0, 0, 0, 93,
 	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, 195, 0, 0, 0, 0, 137, 0, 0, 152,
-	104, 103, 142, 112, 0, 0, 0, 95, 0, 144,
-	133, 164, 0, 134, 143, 116, 156, 138, 163, 196,
-	171, 154, 170, 82, 153, 162, 93, 146, 84, 160,
-	151, 122, 108, 109, 83, 0, 141, 98, 102, 97,
-	130, 157, 158, 96, 179, 87, 169, 86, 88, 168,
-	129, 155, 161, 123, 120, 85, 159, 121, 119, 111,
-	100, 105, 135, 118, 136, 106, 126, 125, 127, 0,
-	0, 0, 150, 166, 180, 90, 0, 0, 172, 173,
-	174, 175, 176, 0, 0, 91, 128, 89, 107, 147,
-	110, 117, 140, 178, 132, 145, 94, 165, 148, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 131, 0,
-	0, 0, 0, 0, 0, 0, 81, 99, 114, 177,
-	139, 101, 167, 113, 0, 115, 0, 0, 149, 124,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 250, 0, 0,
-	0, 0, 0, 0, 0, 0, 92, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 198, 0, 0, 0,
+	0, 139, 0, 155, 105, 113, 0, 87, 0, 104,
+	131, 144, 148, 0, 0, 0, 96, 0, 146, 135,
+	167, 0, 136, 145, 117, 159, 140, 166, 199, 174,
+	157, 173, 82, 156, 165, 94, 149, 84, 163, 154,
+	123, 109, 110, 83, 0, 143, 99, 103, 98, 132,
+	160, 161, 97, 182, 88, 172, 86, 89, 171, 130,
+	158, 164, 124, 121, 85, 162, 122, 120, 112, 101,
+	106, 137, 119, 138, 107, 127, 126, 128, 0, 0,
+	0, 153, 169, 183, 91, 0, 0, 175, 176, 177,
+	178, 179, 0, 0, 92, 129, 90, 108, 150, 111,
+	118, 142, 181, 134, 147, 95, 168, 151, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 133, 0, 0,
+	0, 0, 0, 0, 0, 81, 100, 115, 180, 141,
+	102, 170, 114, 0, 116, 0, 0, 152, 125, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 253, 0, 0, 0,
+	0, 0, 0, 0, 0, 93, 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,
-	0, 0, 0, 195, 0, 0, 0, 0, 137, 0,
-	0, 152, 104, 103, 142, 112, 0, 0, 0, 95,
-	0, 144, 133, 164, 0, 134, 143, 116, 156, 138,
-	163, 196, 171, 154, 170, 82, 153, 162, 93, 146,
-	84, 160, 151, 122, 108, 109, 83, 0, 141, 98,
-	102, 97, 130, 157, 158, 96, 179, 87, 169, 86,
-	88, 168, 129, 155, 161, 123, 120, 85, 159, 121,
-	119, 111, 100, 105, 135, 118, 136, 106, 126, 125,
-	127, 0, 0, 0, 150, 166, 180, 90, 0, 0,
-	172, 173, 174, 175, 176, 0, 0, 91, 128, 89,
-	107, 147, 110, 117, 140, 178, 132, 145, 94, 165,
-	148, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 81, 0,
-	114, 177, 139, 101, 167,
+	0, 0, 198, 0, 0, 0, 0, 139, 0, 155,
+	105, 113, 0, 87, 0, 104, 131, 144, 148, 0,
+	0, 0, 96, 0, 146, 135, 167, 0, 136, 145,
+	117, 159, 140, 166, 199, 174, 157, 173, 82, 156,
+	165, 94, 149, 84, 163, 154, 123, 109, 110, 83,
+	0, 143, 99, 103, 98, 132, 160, 161, 97, 182,
+	88, 172, 86, 89, 171, 130, 158, 164, 124, 121,
+	85, 162, 122, 120, 112, 101, 106, 137, 119, 138,
+	107, 127, 126, 128, 0, 0, 0, 153, 169, 183,
+	91, 0, 0, 175, 176, 177, 178, 179, 0, 0,
+	92, 129, 90, 108, 150, 111, 118, 142, 181, 134,
+	147, 95, 168, 151, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 81, 0, 115, 180, 141, 102, 170,
 }
 var yyPact = [...]int{
 
-	125, -1000, -180, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, 849, 876, -1000, -1000, -1000, -1000, -1000, -1000, 278,
-	7715, 59, 89, -19, 10404, 85, 1397, 10848, -1000, -9,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -81, -83, 637,
-	-1000, -1000, -1000, -1000, -1000, 843, 847, 650, 823, 748,
-	-1000, 5873, 52, 9287, 10182, 5162, -1000, -1000, 266, 10848,
-	78, 10848, -151, 10626, 48, 48, 48, -1000, -1000, -1000,
+	1599, -1000, -183, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, 869, 924, -1000, -1000, -1000, -1000, -1000, -1000, 247,
+	7604, 79, 97, 8, 10341, 94, 140, 10793, -1000, -3,
+	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -73, -74, 625,
+	-1000, -1000, -1000, -1000, -1000, 859, 866, 685, 851, 757,
+	-1000, 5947, 54, 9204, 10115, 5224, -1000, -1000, 211, 10793,
+	89, 10793, -150, 10567, 52, 52, 52, -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,
@@ -1816,23 +1819,23 @@ 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, 60, 10848, -1000, 10848, 44, 542, 44, 44, 44,
-	10848, -1000, 120, -1000, -1000, -1000, -1000, 10848, 533, 782,
-	40, 3162, 3162, 3162, 3162, -2, 3162, -73, 703, 858,
-	-1000, -1000, -1000, -1000, -1000, 3162, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, 441, 791,
-	6587, 6587, 849, -1000, 637, -1000, -1000, -1000, 769, -1000,
-	-1000, 253, 861, -1000, 7493, 119, -1000, 6587, 1382, 645,
-	-1000, -1000, 645, -1000, -1000, 99, -1000, -1000, 7043, 7043,
-	7043, 7043, 7043, 7043, 7043, 7043, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	645, -1000, 6350, 645, 645, 645, 645, 645, 645, 645,
-	645, 6587, 645, 645, 645, 645, 645, 645, 645, 645,
-	645, 645, 645, 645, 645, 9960, 590, 644, -1000, -1000,
-	-1000, 820, 8393, 9065, 10848, 576, -1000, 629, 4912, -97,
-	-1000, -1000, -1000, 184, 8843, -1000, -1000, -1000, 779, -1000,
+	-1000, -1000, -1000, -1000, 93, 10793, -1000, 10793, 51, 531,
+	51, 51, 51, 10793, -1000, 126, -1000, -1000, -1000, -1000,
+	10793, 521, 792, 45, 3192, 3192, 3192, 3192, 2, 3192,
+	-70, 704, 883, -1000, -1000, -1000, -1000, -1000, 3192, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, 473, 837, 6673, 6673, 869, -1000, 625, -1000, -1000,
+	-1000, 818, -1000, -1000, 261, 895, -1000, 7378, 120, -1000,
+	6673, 1276, 636, -1000, -1000, 636, -1000, -1000, 108, -1000,
+	-1000, 7137, 7137, 7137, 7137, 7137, 7137, 7137, 7137, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, 636, -1000, 6432, 636, 636, 636, 636,
+	636, 636, 636, 636, 6673, 636, 636, 636, 636, 636,
+	636, 636, 636, 636, 636, 636, 636, 636, 9889, 575,
+	678, -1000, -1000, -1000, 841, 8294, 8978, 10793, 616, -1000,
+	604, 4970, -118, -1000, -1000, -1000, 196, 8752, -1000, -1000,
+	-1000, 790, -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,
@@ -1840,128 +1843,131 @@ 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, 541, 10848, -1000, 1934, -1000, 528, 3162,
-	55, 670, 527, 205, 518, 10848, 10848, 3162, 49, 10848,
-	818, 701, 10848, 515, 510, -1000, 4662, -1000, 3162, 3162,
-	3162, 3162, 3162, 3162, 3162, 3162, -1000, -1000, -1000, -1000,
-	-1000, -1000, 3162, 3162, -1000, 860, 225, -1000, -1000, 10848,
-	6587, -1000, -1000, -1000, -1000, -1000, -1000, 871, 146, 483,
-	117, 647, -1000, 265, 843, 441, 748, 8615, 676, -1000,
-	-1000, 10848, -1000, 6587, 6587, 358, -1000, 9731, -1000, -1000,
-	3662, 160, 7043, 369, 289, 7043, 7043, 7043, 7043, 7043,
-	7043, 7043, 7043, 7043, 7043, 7043, 7043, 7043, 7043, 7043,
-	382, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, 506,
-	-1000, 637, 706, 706, 128, 128, 128, 128, 128, 128,
-	128, 7271, 5399, 441, 526, 183, 6350, 5873, 5873, 6587,
-	6587, 11070, 11070, 5873, 827, 197, 183, 11070, -1000, 441,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, 5873, 5873, 5873,
-	5873, 20, 10848, -1000, 11070, 9287, 9287, 9287, 9287, 9287,
-	-1000, 739, 738, -1000, 736, 729, 717, 10848, -1000, 514,
-	8393, 121, 645, -1000, 9509, -1000, -1000, 20, 577, 9287,
-	10848, -1000, -1000, 4412, 629, -97, 622, -1000, -113, -111,
-	6110, 127, -1000, -1000, -1000, -1000, 2912, 263, 556, 329,
-	-67, -1000, -1000, -1000, 652, -1000, 652, 652, 652, 652,
-	-38, -38, -38, -38, -1000, -1000, -1000, -1000, -1000, 668,
-	667, -1000, 652, 652, 652, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, 666, 666, 666, 653, 653, 671, -1000, 10848, -168,
-	505, 3162, 815, 3162, -1000, 80, -1000, 10848, -1000, -1000,
-	10848, 3162, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, 10848, 235, 10848,
-	10848, -1000, 183, -1000, 760, 6587, 6587, 4162, 6587, -1000,
-	-1000, -1000, 791, -1000, 827, 848, -1000, 773, 772, 5873,
-	-1000, -1000, 160, 304, -1000, -1000, 391, -1000, -1000, -1000,
-	-1000, 116, 645, -1000, 1619, -1000, -1000, -1000, -1000, 369,
-	7043, 7043, 7043, 318, 1619, 1738, 1528, 1399, 128, 446,
-	446, 129, 129, 129, 129, 129, 426, 426, -1000, -1000,
-	-1000, 441, -1000, -1000, -1000, 441, 5873, 625, -1000, -1000,
-	6587, -1000, 441, 501, 501, 334, 311, 628, -1000, 110,
-	613, 501, 5873, 324, -1000, 6587, 441, -1000, 501, 441,
-	501, 501, 568, 645, -1000, 611, -1000, 178, 644, 665,
-	700, 751, -1000, -1000, -1000, -1000, 737, -1000, 728, -1000,
-	-1000, -1000, -1000, -1000, 71, 70, 66, 10626, -1000, 856,
-	9287, 604, -1000, -1000, 622, -97, -119, -1000, -1000, -1000,
-	183, -1000, 389, 620, 2662, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, 662, 496, -1000, 806, 181, 187, 494, 805,
-	-1000, -1000, -1000, 784, -1000, 234, -76, -1000, -1000, 372,
-	-38, -38, -1000, -1000, 127, 778, 127, 127, 127, 403,
-	403, -1000, -1000, -1000, -1000, 335, -1000, -1000, -1000, 317,
-	-1000, 699, 10626, 3162, -1000, 3912, -1000, -1000, -1000, -1000,
-	-1000, -1000, 230, 166, 186, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, -1000, 17, -1000, 3162, -1000,
-	225, -1000, 398, 6587, -1000, -1000, 752, 183, 183, 108,
-	-1000, -1000, 10848, -1000, -1000, -1000, -1000, 597, -1000, -1000,
-	-1000, 3412, 5873, -1000, 318, 1619, 1638, -1000, 7043, 7043,
-	-1000, -1000, 501, 5873, 183, -1000, -1000, -1000, 47, 382,
-	47, 7043, 7043, 4162, 7043, 7043, -161, 595, 189, -1000,
-	6587, 415, -1000, -1000, -1000, -1000, -1000, 684, 11070, 645,
-	-1000, 8165, 10626, 849, 11070, 6587, 6587, -1000, -1000, 6587,
-	661, -1000, 6587, -1000, -1000, -1000, 645, 645, 645, 456,
-	-1000, 849, 604, -1000, -1000, -1000, -131, -116, -1000, -1000,
-	-1000, 2912, -1000, 2912, 10626, 36, -1000, 476, 464, -1000,
-	-1000, 658, 674, 39, -1000, -1000, -1000, 547, 127, 127,
-	-1000, 200, -1000, -1000, -1000, 484, -1000, 480, 618, 462,
-	10848, -1000, -1000, 616, -1000, 175, -1000, -1000, 10626, -1000,
+	-1000, -1000, -1000, -1000, -1000, -1000, 530, 10793, -1000, 1961,
+	-1000, 520, 3192, 64, 659, 512, 225, 505, 10793, 10793,
+	3192, 58, 10793, 846, 703, 10793, 503, 501, -1000, 4716,
+	-1000, 3192, 3192, 3192, 3192, 3192, 3192, 3192, 3192, -1000,
+	-1000, -1000, -1000, -1000, -1000, 3192, 3192, -1000, 893, 219,
+	-1000, -1000, 10793, 6673, -1000, -1000, -1000, -1000, -1000, -1000,
+	918, 155, 354, 118, 623, -1000, 231, 859, 473, 757,
+	8520, 714, -1000, -1000, 10793, -1000, 6673, 6673, 392, -1000,
+	9656, -1000, -1000, 3700, 162, 7137, 307, 182, 7137, 7137,
+	7137, 7137, 7137, 7137, 7137, 7137, 7137, 7137, 7137, 7137,
+	7137, 7137, 7137, 358, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, 489, -1000, 625, 746, 746, 139, 139, 139,
+	139, 139, 139, 139, 2162, 5465, 473, 518, 242, 6432,
+	5947, 5947, 6673, 6673, 11019, 11019, 5947, 852, 210, 242,
+	11019, -1000, 473, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	5947, 5947, 5947, 5947, 18, 10793, -1000, 11019, 9204, 9204,
+	9204, 9204, 9204, -1000, 739, 736, -1000, 749, 747, 774,
+	10793, -1000, 511, 8294, 124, 636, -1000, 9430, -1000, -1000,
+	18, 556, 9204, 10793, -1000, -1000, 4462, 604, -118, 571,
+	-1000, -95, -104, 6188, 134, -1000, -1000, -1000, -1000, 2938,
+	156, 537, 264, -61, -1000, -1000, -1000, 640, -1000, 640,
+	640, 640, 640, -29, -29, -29, -29, -1000, -1000, -1000,
+	-1000, -1000, 657, 656, -1000, 640, 640, 640, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, 10626, 10848, -1000, -1000, -1000, -1000, -1000, 10626, -1000,
-	235, -1000, 183, -1000, 3912, -1000, 856, 9287, -1000, -1000,
-	441, -1000, 7043, 1619, 1619, -1000, -1000, 441, 652, 652,
-	-1000, 652, 653, -1000, 652, -18, 652, -20, 441, 441,
-	1245, 1597, -1000, 379, 1552, 645, -158, -1000, 183, 6587,
-	-1000, 792, 566, 587, -1000, -1000, 5636, 441, 460, 106,
-	456, 843, -1000, 183, 183, 183, 10626, 183, 10626, 10626,
-	10626, 7937, 10626, 843, -1000, -1000, -1000, -1000, 2662, -1000,
-	454, -1000, 652, -1000, -1000, -1000, 10626, -63, 867, -1000,
+	-1000, -1000, -1000, -1000, 654, 654, 654, 641, 641, 660,
+	-1000, 10793, -167, 485, 3192, 844, 3192, -1000, 76, -1000,
+	10793, -1000, -1000, 10793, 3192, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-38, 383, -38, 296, -1000, 275, 3162, 3912, 2912, -1000,
-	651, -1000, -1000, -1000, -1000, 810, -1000, 853, 589, -1000,
-	1619, -1000, -1000, 84, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, 7043, 7043, -1000, 7043, 7043, 7043, 441,
-	370, 183, 799, -1000, 645, -1000, -1000, 601, 10626, 10626,
-	-1000, -1000, 451, -1000, 449, 449, 449, 121, -1000, -1000,
-	114, 10626, -1000, 440, 148, -1000, -139, 127, -1000, 127,
-	502, 457, -1000, -1000, -1000, 10626, 645, 851, 846, -1000,
-	-1000, 1345, 1345, 1345, 1345, 248, -1000, -1000, 864, -1000,
-	645, -1000, 637, 90, -1000, 10626, -1000, -1000, -1000, -1000,
-	-1000, 114, -1000, 427, 169, 325, -1000, 34, 246, 798,
-	-1000, 795, -1000, -1000, -1000, -1000, -1000, 435, 15, -1000,
-	6587, 6587, -1000, -1000, -1000, -1000, 441, 37, -171, 11070,
-	587, 441, 10626, -1000, -1000, -1000, 262, -1000, -1000, 10848,
-	-1000, 267, -1000, -1000, 670, 413, -1000, 10626, 183, 582,
-	-1000, 747, -166, -174, 559, -1000, -1000, -1000, 649, -1000,
-	-168, -1000, 15, 768, -1000, 743, -1000, 10626, -1000, -1000,
-	11, -169, 410, 5, -172, -1000, 645, -175, 6815, -1000,
-	1345, 441, -1000, -1000,
+	10793, 292, 10793, 10793, -1000, 242, -1000, 750, 6673, 6673,
+	4208, 6673, -1000, -1000, -1000, 837, -1000, 852, 864, -1000,
+	777, 776, 5947, -1000, -1000, 162, 207, -1000, -1000, 338,
+	-1000, -1000, -1000, -1000, 117, 636, -1000, 1817, -1000, -1000,
+	-1000, -1000, 307, 7137, 7137, 7137, 386, 1817, 1782, 731,
+	1327, 139, 294, 294, 136, 136, 136, 136, 136, 435,
+	435, -1000, -1000, -1000, 473, -1000, -1000, -1000, 473, 5947,
+	585, -1000, -1000, 6673, -1000, 473, 500, 500, 278, 313,
+	634, -1000, 113, 631, 500, 5947, 291, -1000, 6673, 473,
+	-1000, 500, 473, 500, 500, 538, 636, -1000, 606, -1000,
+	194, 678, 653, 701, 1261, -1000, -1000, -1000, -1000, 719,
+	-1000, 716, -1000, -1000, -1000, -1000, -1000, 87, 81, 68,
+	10567, -1000, 880, 9204, 598, -1000, -1000, 571, -118, -87,
+	-1000, -1000, -1000, 242, -1000, 364, 570, 2684, -1000, -1000,
+	-1000, -1000, -1000, -1000, -1000, 648, 483, -1000, 832, 168,
+	184, 449, 819, -1000, -1000, -1000, 794, -1000, 240, -65,
+	-1000, -1000, 356, -29, -29, -1000, -1000, 134, 785, 134,
+	134, 134, 376, 376, -1000, -1000, -1000, -1000, 342, -1000,
+	-1000, -1000, 323, -1000, 677, 10567, 3192, -1000, 3954, -1000,
+	-1000, -1000, -1000, -1000, -1000, 341, 283, 205, -1000, -1000,
+	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, 16,
+	-1000, 3192, -1000, 219, -1000, 375, 6673, -1000, -1000, 760,
+	242, 242, 112, -1000, -1000, 10793, -1000, -1000, -1000, -1000,
+	618, -1000, -1000, -1000, 3446, 5947, -1000, 386, 1817, 1425,
+	-1000, 7137, 7137, -1000, -1000, 500, 5947, 242, -1000, -1000,
+	-1000, 57, 358, 57, 7137, 7137, 4208, 7137, 7137, -160,
+	586, 187, -1000, 6673, 275, -1000, -1000, -1000, -1000, -1000,
+	673, 11019, 636, -1000, 8062, 10567, 869, 11019, 6673, 6673,
+	-1000, -1000, 6673, 645, -1000, 6673, -1000, -1000, -1000, 636,
+	636, 636, 468, -1000, 869, 598, -1000, -1000, -1000, -124,
+	-136, -1000, -1000, -1000, 2938, -1000, 2938, 10567, 34, -1000,
+	446, 407, -1000, -1000, 642, 664, 39, -1000, -1000, -1000,
+	534, 134, 134, -1000, 178, -1000, -1000, -1000, 497, -1000,
+	493, 569, 472, 10793, -1000, -1000, 567, -1000, 188, -1000,
+	-1000, 10567, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, 10567, 10793, -1000, -1000, -1000, -1000,
+	-1000, 10567, -1000, 292, -1000, 242, -1000, 3954, -1000, 880,
+	9204, -1000, -1000, 473, -1000, 7137, 1817, 1817, -1000, -1000,
+	473, 640, 640, -1000, 640, 641, -1000, 640, -12, 640,
+	-13, 473, 473, 1356, 1767, -1000, 1291, 1736, 636, -157,
+	-1000, 242, 6673, -1000, 834, 547, 559, -1000, -1000, 5706,
+	473, 470, 111, 468, 859, -1000, 242, 242, 242, 10567,
+	242, 10567, 10567, 10567, 7830, 10567, 859, -1000, -1000, -1000,
+	-1000, 2684, -1000, 458, -1000, 640, -1000, -1000, -1000, 10567,
+	-57, 916, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -29, 372, -29, 322, -1000, 302, 3192,
+	3954, 2938, -1000, 639, -1000, -1000, -1000, -1000, 840, -1000,
+	877, 564, -1000, 1817, -1000, -1000, 96, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, -1000, -1000, 7137, 7137, -1000, 7137,
+	7137, 7137, 473, 368, 242, 817, -1000, 636, -1000, -1000,
+	594, 10567, 10567, -1000, -1000, 456, -1000, 454, 454, 454,
+	124, -1000, -1000, 119, 10567, -1000, 444, 161, -1000, -140,
+	134, -1000, 134, 533, 519, -1000, -1000, -1000, 10567, 636,
+	874, 863, -1000, -1000, 1564, 1564, 1564, 1564, 21, -1000,
+	-1000, 915, -1000, 636, -1000, 625, 106, -1000, 10567, -1000,
+	-1000, -1000, -1000, -1000, 119, -1000, 394, 177, 365, -1000,
+	31, 249, 812, -1000, 808, -1000, -1000, -1000, -1000, -1000,
+	442, 14, -1000, 6673, 6673, -1000, -1000, -1000, -1000, 473,
+	41, -171, 11019, 559, 473, 10567, -1000, -1000, -1000, 282,
+	-1000, -1000, 10793, -1000, 363, -1000, -1000, 659, 419, -1000,
+	10567, 242, 557, -1000, 751, -165, -175, 553, -1000, -1000,
+	-1000, 638, -1000, -167, -1000, 14, 769, -1000, 743, -1000,
+	10567, -1000, -1000, 11, -169, 393, 9, -173, 662, 636,
+	-176, 655, -1000, 906, 6905, -1000, -1000, 908, 186, 186,
+	1564, 473, -1000, -1000, -1000, 38, 312, -1000, -1000, -1000,
+	-1000, -1000, -1000,
 }
 var yyPgo = [...]int{
 
-	0, 1078, 18, 483, 1077, 1072, 1071, 1070, 1069, 1066,
-	1064, 1062, 1061, 1060, 1058, 1057, 1056, 1055, 1054, 1051,
-	1050, 1049, 1048, 1047, 91, 1046, 1045, 1043, 58, 1042,
-	63, 1041, 1040, 33, 57, 46, 34, 1278, 1038, 26,
-	62, 56, 1036, 48, 1034, 1028, 71, 1027, 53, 1026,
-	1019, 94, 1016, 1015, 11, 17, 1013, 1012, 1011, 1009,
-	60, 592, 1007, 1006, 1003, 997, 995, 994, 44, 3,
-	7, 16, 20, 993, 85, 8, 992, 45, 989, 988,
-	987, 985, 40, 984, 49, 981, 15, 47, 975, 13,
-	55, 28, 21, 5, 69, 51, 971, 25, 54, 43,
-	967, 966, 404, 965, 964, 36, 963, 24, 140, 331,
-	962, 960, 955, 954, 42, 0, 754, 300, 61, 953,
-	952, 951, 1490, 67, 59, 22, 950, 77, 711, 32,
-	949, 948, 29, 946, 945, 944, 943, 942, 941, 940,
-	187, 939, 936, 935, 76, 10, 934, 933, 50, 30,
-	930, 929, 928, 39, 52, 926, 925, 41, 924, 922,
-	921, 920, 919, 23, 14, 913, 9, 912, 6, 911,
-	27, 905, 1, 903, 12, 902, 2, 901, 4, 37,
-	892, 890, 444, 301, 887, 885, 73,
+	0, 1118, 21, 447, 1117, 1116, 1115, 1114, 1113, 1112,
+	1111, 1108, 1107, 1106, 1104, 1103, 1094, 1086, 1085, 1083,
+	1081, 1080, 1079, 1078, 109, 1075, 1073, 1072, 59, 1070,
+	69, 1069, 1066, 40, 307, 44, 41, 1013, 1065, 20,
+	101, 87, 1064, 47, 1063, 1061, 73, 1058, 54, 1057,
+	1054, 111, 1053, 1052, 12, 18, 1051, 1050, 1048, 1046,
+	60, 253, 1045, 1044, 1043, 1041, 1036, 1035, 50, 6,
+	10, 36, 15, 1033, 339, 9, 1028, 48, 1022, 1021,
+	1020, 1019, 34, 1018, 68, 1017, 16, 61, 1016, 14,
+	56, 27, 24, 5, 67, 53, 1015, 28, 51, 45,
+	1012, 1010, 367, 1004, 1002, 42, 1001, 25, 152, 360,
+	993, 991, 990, 989, 43, 0, 643, 338, 62, 986,
+	985, 983, 1509, 57, 58, 17, 982, 33, 180, 39,
+	974, 973, 30, 972, 970, 969, 968, 967, 966, 964,
+	154, 963, 962, 961, 29, 37, 960, 959, 52, 19,
+	957, 955, 954, 49, 55, 953, 952, 63, 951, 950,
+	949, 948, 947, 26, 32, 946, 11, 944, 7, 941,
+	23, 940, 3, 939, 13, 938, 8, 937, 4, 46,
+	1, 936, 2, 934, 932, 444, 698, 931, 930, 75,
 }
 var yyR1 = [...]int{
 
-	0, 180, 181, 181, 1, 1, 1, 1, 1, 1,
+	0, 183, 184, 184, 1, 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, 9,
-	184, 184, 46, 46, 90, 90, 10, 10, 10, 10,
+	187, 187, 46, 46, 90, 90, 10, 10, 10, 10,
 	95, 95, 99, 99, 99, 100, 100, 100, 100, 130,
 	130, 11, 11, 11, 11, 11, 11, 11, 11, 178,
 	178, 177, 176, 176, 175, 175, 174, 16, 159, 161,
@@ -1976,7 +1982,8 @@ var yyR1 = [...]int{
 	144, 144, 145, 145, 145, 152, 152, 152, 152, 152,
 	142, 142, 155, 155, 169, 169, 168, 168, 168, 158,
 	158, 165, 165, 165, 165, 165, 157, 157, 167, 167,
-	166, 156, 156, 170, 162, 162, 162, 163, 163, 163,
+	166, 156, 156, 170, 170, 170, 170, 181, 182, 180,
+	180, 180, 180, 180, 162, 162, 162, 163, 163, 163,
 	164, 164, 164, 12, 12, 12, 12, 12, 12, 12,
 	12, 12, 179, 179, 179, 179, 179, 179, 179, 179,
 	179, 179, 179, 173, 171, 171, 172, 172, 13, 14,
@@ -1986,7 +1993,7 @@ var yyR1 = [...]int{
 	18, 18, 18, 18, 106, 106, 104, 104, 105, 105,
 	105, 107, 107, 107, 131, 131, 131, 19, 19, 21,
 	21, 22, 23, 20, 20, 20, 20, 20, 20, 20,
-	185, 24, 25, 25, 26, 26, 26, 30, 30, 30,
+	188, 24, 25, 25, 26, 26, 26, 30, 30, 30,
 	28, 28, 29, 29, 35, 35, 34, 34, 36, 36,
 	36, 36, 119, 119, 119, 118, 118, 38, 38, 39,
 	39, 40, 40, 41, 41, 41, 53, 53, 89, 89,
@@ -2003,8 +2010,8 @@ var yyR1 = [...]int{
 	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, 63, 63, 63, 63, 63,
-	63, 64, 64, 64, 64, 64, 64, 64, 64, 186,
-	186, 66, 66, 66, 66, 31, 31, 31, 31, 31,
+	63, 64, 64, 64, 64, 64, 64, 64, 64, 189,
+	189, 66, 66, 66, 66, 31, 31, 31, 31, 31,
 	129, 129, 132, 132, 132, 132, 132, 132, 132, 132,
 	132, 132, 132, 132, 132, 78, 78, 32, 32, 76,
 	76, 77, 79, 79, 75, 75, 75, 60, 60, 60,
@@ -2037,7 +2044,7 @@ var yyR1 = [...]int{
 	115, 115, 115, 115, 115, 115, 115, 115, 115, 115,
 	115, 115, 115, 115, 115, 115, 115, 115, 115, 115,
 	115, 115, 115, 115, 115, 115, 115, 115, 115, 115,
-	182, 183, 127, 128, 128, 128,
+	115, 115, 115, 185, 186, 127, 128, 128, 128,
 }
 var yyR2 = [...]int{
 
@@ -2060,7 +2067,8 @@ var yyR2 = [...]int{
 	3, 3, 0, 2, 2, 0, 2, 1, 2, 1,
 	0, 2, 5, 4, 1, 2, 2, 3, 2, 0,
 	1, 2, 3, 3, 2, 2, 1, 1, 1, 3,
-	2, 3, 1, 10, 0, 1, 3, 1, 2, 3,
+	2, 3, 1, 10, 11, 11, 12, 3, 3, 1,
+	1, 2, 2, 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, 1, 1, 7, 1, 3, 8, 8, 5, 4,
@@ -2121,157 +2129,158 @@ 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, 0, 0, 1, 1,
+	1, 1, 1, 1, 1, 0, 0, 1, 1,
 }
 var yyChk = [...]int{
 
-	-1000, -180, -1, -2, -6, -7, -8, -9, -10, -11,
+	-1000, -183, -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,
-	114, 115, 117, 116, 143, 118, 136, 50, 155, 156,
-	158, 159, 25, 137, 138, 141, 142, 31, 32, -182,
-	8, 240, 54, -181, 255, -82, 15, -26, 5, -24,
-	-185, -24, -24, -24, -24, -24, -159, -161, 54, 89,
-	-113, 123, 71, 151, 232, 120, 121, 127, -116, 57,
-	-115, 248, 155, 166, 160, 187, 179, 177, 180, 219,
-	207, 217, 66, 158, 228, 139, 175, 171, 169, 27,
-	192, 253, 170, 133, 132, 193, 197, 220, 164, 165,
-	222, 191, 135, 33, 250, 35, 147, 223, 195, 190,
-	186, 189, 163, 185, 39, 199, 198, 200, 218, 182,
-	172, 18, 226, 142, 145, 194, 196, 128, 149, 252,
-	224, 168, 134, 146, 141, 227, 159, 221, 230, 38,
-	204, 162, 131, 156, 153, 183, 148, 173, 174, 188,
-	161, 184, 157, 150, 143, 229, 205, 254, 181, 178,
-	154, 152, 210, 211, 212, 213, 214, 251, 225, 176,
-	206, -102, 123, 125, 121, 121, 122, 123, 232, 120,
-	121, -51, -122, 57, -115, 123, 151, 121, 107, 180,
-	114, 208, 122, 33, 149, -131, 121, -104, 152, 207,
-	210, 211, 212, 214, 213, 57, 221, 220, 215, -122,
-	157, -127, -127, -127, -127, -127, 209, 209, -2, -86,
-	17, 16, -5, -3, -182, 6, 20, 21, -30, 40,
-	41, -25, -36, 98, -37, -122, -56, 73, -61, 29,
-	57, -115, 23, -60, -57, -75, -73, -74, 107, 108,
-	109, 96, 97, 104, 74, 110, -65, -63, -64, -66,
-	59, 58, 67, 60, 61, 62, 63, 68, 69, 70,
-	-116, -71, -182, 44, 45, 241, 242, 243, 244, 247,
-	245, 76, 34, 231, 239, 238, 237, 235, 236, 233,
-	234, 126, 232, 102, 240, -102, -39, -40, -41, -42,
-	-53, -74, -182, -51, 11, -46, -51, -94, -130, 157,
-	-98, 221, 220, -117, -96, -116, -114, 219, 180, 218,
-	119, 72, 22, 24, 202, 75, 107, 16, 76, 106,
-	241, 114, 48, 233, 234, 231, 243, 244, 232, 208,
-	29, 10, 25, 137, 21, 100, 116, 79, 80, 140,
-	23, 138, 70, 19, 51, 11, 13, 14, 126, 125,
-	91, 122, 46, 8, 110, 26, 88, 42, 28, 44,
-	89, 17, 235, 236, 31, 247, 144, 102, 49, 36,
-	73, 68, 52, 71, 15, 47, 90, 117, 240, 45,
-	120, 6, 246, 30, 136, 43, 121, 209, 78, 124,
-	69, 5, 127, 32, 9, 50, 53, 237, 238, 239,
-	34, 77, 12, -160, 89, -154, 57, -51, 122, -51,
-	240, -116, -109, 126, -109, -109, 121, -51, -51, -108,
-	126, 57, -108, -108, -108, -51, 111, -51, 57, 30,
-	232, 57, 149, 121, 150, 123, -128, -182, -117, -128,
-	-128, -128, 153, 154, -128, 217, -106, 209, 216, 52,
-	12, -128, -127, -127, -183, 56, -87, 19, 31, -37,
-	-122, -83, -84, -37, -82, -2, -24, 36, -28, 21,
-	65, 11, -119, 72, 71, 88, -118, 22, -116, 59,
-	111, -37, -58, 91, 73, 89, 90, 75, 93, 92,
-	103, 96, 97, 98, 99, 100, 101, 102, 94, 95,
-	106, 81, 82, 83, 84, 85, 86, 87, -103, -182,
-	-74, -182, 112, 113, -61, -61, -61, -61, -61, -61,
-	-61, -61, -182, -2, -69, -37, -182, -182, -182, -182,
-	-182, -182, -182, -182, -182, -78, -37, -182, -186, -182,
-	-186, -186, -186, -186, -186, -186, -186, -182, -182, -182,
-	-182, -52, 26, -51, 30, 55, -47, -49, -48, -50,
-	42, 46, 48, 43, 44, 45, 49, -126, 22, -39,
-	-182, -125, 145, -124, 22, -122, 59, -51, -46, -184,
-	55, 11, 53, 55, -94, 157, -95, -99, 222, 224,
-	81, -121, -116, 59, 29, 30, 56, 55, -51, -133,
-	-136, -138, -137, -139, -134, -135, 177, 178, 107, 181,
-	183, 184, 185, 186, 187, 188, 189, 190, 191, 192,
-	30, 139, 173, 174, 175, 176, 193, 194, 195, 196,
-	197, 198, 199, 200, 160, 161, 162, 163, 164, 165,
-	166, 168, 169, 170, 171, 172, 57, -128, 123, -178,
-	53, 57, 73, 57, -51, -51, -128, 124, -51, 23,
-	52, -51, 57, 57, -123, -122, -114, -128, -128, -128,
-	-128, -128, -128, -128, -128, -128, -128, 11, -105, 11,
-	91, -51, -37, 9, 91, 55, 18, 111, 55, -85,
-	24, 25, -86, -183, -30, -62, -116, 60, 63, -29,
-	43, -51, -37, -37, -67, 68, 73, 69, 70, -118,
-	98, -123, -117, -114, -61, -68, -71, -74, 64, 91,
-	89, 90, 75, -61, -61, -61, -61, -61, -61, -61,
-	-61, -61, -61, -61, -61, -61, -61, -61, -129, 57,
-	59, 57, -60, -60, -116, -35, 21, -34, -36, -183,
-	55, -183, -2, -34, -34, -37, -37, -75, -116, -122,
-	-75, -34, -28, -76, -77, 77, -75, -183, -34, -35,
-	-34, -34, -90, 145, -51, -93, -97, -75, -40, -41,
-	-41, -40, -41, 42, 42, 42, 47, 42, 47, 42,
-	-48, -122, -183, -54, 50, 125, 51, -182, -124, -90,
-	53, -39, -51, -98, -95, 55, 223, 225, 226, 52,
-	-37, -145, 106, -162, -163, -164, -117, 59, 60, -154,
-	-155, -156, -165, 130, -170, 128, 131, 127, -157, 133,
-	122, 28, 56, -150, 68, 73, -146, 205, -140, 54,
-	-140, -140, -140, -140, -144, 180, -144, -144, -144, 54,
-	54, -140, -140, -140, -148, 54, -148, -148, -149, 54,
-	-149, -120, 53, -51, -176, 251, -177, 57, -128, 23,
-	-128, -110, 119, 116, 117, -173, 115, 202, 180, 66,
-	29, 15, 241, 145, 254, 57, 146, -51, -51, -128,
-	-51, -107, 89, 12, -122, -122, 38, -37, -37, -123,
-	-84, -87, -101, 19, 11, 34, 34, -34, 68, 69,
-	70, 111, -182, -68, -61, -61, -61, -33, 140, 72,
-	-183, -183, -34, 55, -37, -183, -183, -183, 55, 53,
-	22, 55, 11, 111, 55, 11, -183, -34, -79, -77,
-	79, -37, -183, -183, -183, -183, -183, -59, 30, 34,
-	-2, -182, -182, -55, 55, 12, 81, -44, -43, 52,
-	53, -45, 52, -43, 42, 42, 122, 122, 122, -91,
-	-116, -55, -39, -55, -99, -100, 227, 224, 230, 57,
-	59, 55, -164, 81, 54, 57, 28, -157, -157, 57,
-	57, 28, -141, 29, 68, -147, 206, 60, -144, -144,
-	-145, 30, -145, -145, -145, -153, 59, -153, 60, 60,
-	52, -116, -128, -175, -174, -117, -127, -179, 151, 129,
-	130, 133, 132, 57, 122, 28, 128, 131, 145, 127,
-	-179, 151, -111, -112, 124, 22, 122, 28, 145, -128,
-	-105, 59, -37, 39, 111, -51, -38, 11, 98, -117,
-	-35, -33, 72, -61, -61, -183, -36, -132, 107, 177,
-	139, 175, 171, 191, 182, 204, 173, 205, -129, -132,
-	-61, -61, -117, -61, -61, 248, -82, 80, -37, 78,
-	-92, 52, -93, -70, -72, -71, -182, -2, -88, -116,
-	-91, -82, -97, -37, -37, -37, 54, -37, -182, -182,
-	-182, -183, 55, -82, -55, 224, 228, 229, -163, -164,
-	-167, -166, -116, -170, 57, 57, 54, -143, 52, 59,
-	60, 61, 68, 231, 67, 56, -145, -145, 57, 107,
-	56, 55, 56, 55, 56, 55, -51, 55, 81, -127,
-	-116, -127, -116, -51, -127, -116, -107, -55, -39, -183,
-	-61, -183, -140, -140, -140, -149, -140, 165, -140, 165,
-	-183, -183, -183, 55, 19, -183, 55, 19, -182, -32,
-	246, -37, 27, -92, 55, -183, -183, -183, 55, 111,
-	-183, -86, -89, -116, -89, -89, -89, -125, -116, -86,
-	56, 55, -140, -89, -151, 202, 9, -144, 59, -144,
-	60, 60, -128, -174, -164, 54, 26, -80, 13, -144,
-	57, -61, -61, -61, -61, -61, -183, 59, 28, -72,
-	34, -2, -182, -116, -116, 55, 56, -183, -183, -183,
-	-54, -169, -168, 53, 135, 66, -166, 56, -152, 128,
-	28, 127, 231, -145, -145, 56, 56, -89, -182, -81,
-	14, 16, -183, -183, -183, -183, -31, 91, 251, 9,
-	-70, -2, 111, -116, -168, 57, -158, 81, 59, 134,
-	-142, 66, 28, 28, 56, -171, -172, 145, -37, -69,
-	-183, 249, 49, 252, -93, -183, -116, 60, -51, 59,
-	-178, -183, 55, -116, 39, 250, 253, 54, -176, -172,
-	34, 39, -89, 147, 251, 56, 148, 252, -182, 253,
-	-61, 144, -183, -183,
+	114, 115, 117, 116, 147, 118, 140, 50, 159, 160,
+	162, 163, 25, 141, 142, 145, 146, 31, 32, -185,
+	8, 244, 54, -184, 259, -82, 15, -26, 5, -24,
+	-188, -24, -24, -24, -24, -24, -159, -161, 54, 89,
+	-113, 123, 71, 155, 236, 120, 121, 127, -116, 57,
+	-115, 252, 159, 170, 164, 191, 183, 134, 181, 184,
+	223, 211, 221, 66, 162, 232, 143, 179, 175, 173,
+	27, 196, 257, 174, 136, 131, 197, 201, 224, 168,
+	169, 226, 195, 132, 33, 254, 35, 151, 227, 199,
+	194, 190, 193, 167, 189, 39, 203, 202, 204, 222,
+	186, 137, 176, 18, 230, 146, 149, 198, 200, 128,
+	153, 256, 228, 172, 138, 150, 145, 231, 139, 163,
+	225, 234, 38, 208, 166, 130, 160, 157, 187, 152,
+	177, 178, 192, 165, 188, 161, 154, 147, 233, 209,
+	258, 185, 182, 158, 156, 214, 215, 216, 217, 218,
+	255, 229, 180, 210, -102, 123, 125, 121, 121, 122,
+	123, 236, 120, 121, -51, -122, 57, -115, 123, 155,
+	121, 107, 184, 114, 212, 122, 33, 153, -131, 121,
+	-104, 156, 211, 214, 215, 216, 218, 217, 57, 225,
+	224, 219, -122, 161, -127, -127, -127, -127, -127, 213,
+	213, -2, -86, 17, 16, -5, -3, -185, 6, 20,
+	21, -30, 40, 41, -25, -36, 98, -37, -122, -56,
+	73, -61, 29, 57, -115, 23, -60, -57, -75, -73,
+	-74, 107, 108, 109, 96, 97, 104, 74, 110, -65,
+	-63, -64, -66, 59, 58, 67, 60, 61, 62, 63,
+	68, 69, 70, -116, -71, -185, 44, 45, 245, 246,
+	247, 248, 251, 249, 76, 34, 235, 243, 242, 241,
+	239, 240, 237, 238, 126, 236, 102, 244, -102, -39,
+	-40, -41, -42, -53, -74, -185, -51, 11, -46, -51,
+	-94, -130, 161, -98, 225, 224, -117, -96, -116, -114,
+	223, 184, 222, 119, 72, 22, 24, 206, 75, 107,
+	16, 76, 106, 245, 114, 48, 237, 238, 235, 247,
+	248, 236, 212, 29, 10, 25, 141, 21, 100, 116,
+	79, 80, 144, 23, 142, 70, 19, 51, 11, 13,
+	14, 126, 125, 91, 122, 46, 8, 110, 26, 88,
+	42, 28, 44, 89, 17, 239, 240, 31, 251, 148,
+	102, 49, 36, 73, 68, 52, 71, 15, 47, 90,
+	117, 244, 45, 120, 6, 250, 30, 140, 43, 121,
+	213, 78, 124, 69, 5, 127, 32, 9, 50, 53,
+	241, 242, 243, 34, 77, 12, -160, 89, -154, 57,
+	-51, 122, -51, 244, -116, -109, 126, -109, -109, 121,
+	-51, -51, -108, 126, 57, -108, -108, -108, -51, 111,
+	-51, 57, 30, 236, 57, 153, 121, 154, 123, -128,
+	-185, -117, -128, -128, -128, 157, 158, -128, 221, -106,
+	213, 220, 52, 12, -128, -127, -127, -186, 56, -87,
+	19, 31, -37, -122, -83, -84, -37, -82, -2, -24,
+	36, -28, 21, 65, 11, -119, 72, 71, 88, -118,
+	22, -116, 59, 111, -37, -58, 91, 73, 89, 90,
+	75, 93, 92, 103, 96, 97, 98, 99, 100, 101,
+	102, 94, 95, 106, 81, 82, 83, 84, 85, 86,
+	87, -103, -185, -74, -185, 112, 113, -61, -61, -61,
+	-61, -61, -61, -61, -61, -185, -2, -69, -37, -185,
+	-185, -185, -185, -185, -185, -185, -185, -185, -78, -37,
+	-185, -189, -185, -189, -189, -189, -189, -189, -189, -189,
+	-185, -185, -185, -185, -52, 26, -51, 30, 55, -47,
+	-49, -48, -50, 42, 46, 48, 43, 44, 45, 49,
+	-126, 22, -39, -185, -125, 149, -124, 22, -122, 59,
+	-51, -46, -187, 55, 11, 53, 55, -94, 161, -95,
+	-99, 226, 228, 81, -121, -116, 59, 29, 30, 56,
+	55, -51, -133, -136, -138, -137, -139, -134, -135, 181,
+	182, 107, 185, 187, 188, 189, 190, 191, 192, 193,
+	194, 195, 196, 30, 143, 177, 178, 179, 180, 197,
+	198, 199, 200, 201, 202, 203, 204, 164, 165, 166,
+	167, 168, 169, 170, 172, 173, 174, 175, 176, 57,
+	-128, 123, -178, 53, 57, 73, 57, -51, -51, -128,
+	124, -51, 23, 52, -51, 57, 57, -123, -122, -114,
+	-128, -128, -128, -128, -128, -128, -128, -128, -128, -128,
+	11, -105, 11, 91, -51, -37, 9, 91, 55, 18,
+	111, 55, -85, 24, 25, -86, -186, -30, -62, -116,
+	60, 63, -29, 43, -51, -37, -37, -67, 68, 73,
+	69, 70, -118, 98, -123, -117, -114, -61, -68, -71,
+	-74, 64, 91, 89, 90, 75, -61, -61, -61, -61,
+	-61, -61, -61, -61, -61, -61, -61, -61, -61, -61,
+	-61, -129, 57, 59, 57, -60, -60, -116, -35, 21,
+	-34, -36, -186, 55, -186, -2, -34, -34, -37, -37,
+	-75, -116, -122, -75, -34, -28, -76, -77, 77, -75,
+	-186, -34, -35, -34, -34, -90, 149, -51, -93, -97,
+	-75, -40, -41, -41, -40, -41, 42, 42, 42, 47,
+	42, 47, 42, -48, -122, -186, -54, 50, 125, 51,
+	-185, -124, -90, 53, -39, -51, -98, -95, 55, 227,
+	229, 230, 52, -37, -145, 106, -162, -163, -164, -117,
+	59, 60, -154, -155, -156, -165, 135, -170, 128, 130,
+	127, -157, 136, 122, 28, 56, -150, 68, 73, -146,
+	209, -140, 54, -140, -140, -140, -140, -144, 184, -144,
+	-144, -144, 54, 54, -140, -140, -140, -148, 54, -148,
+	-148, -149, 54, -149, -120, 53, -51, -176, 255, -177,
+	57, -128, 23, -128, -110, 119, 116, 117, -173, 115,
+	206, 184, 66, 29, 15, 245, 149, 258, 57, 150,
+	-51, -51, -128, -51, -107, 89, 12, -122, -122, 38,
+	-37, -37, -123, -84, -87, -101, 19, 11, 34, 34,
+	-34, 68, 69, 70, 111, -185, -68, -61, -61, -61,
+	-33, 144, 72, -186, -186, -34, 55, -37, -186, -186,
+	-186, 55, 53, 22, 55, 11, 111, 55, 11, -186,
+	-34, -79, -77, 79, -37, -186, -186, -186, -186, -186,
+	-59, 30, 34, -2, -185, -185, -55, 55, 12, 81,
+	-44, -43, 52, 53, -45, 52, -43, 42, 42, 122,
+	122, 122, -91, -116, -55, -39, -55, -99, -100, 231,
+	228, 234, 57, 59, 55, -164, 81, 54, 57, 28,
+	-157, -157, 57, 57, 28, -141, 29, 68, -147, 210,
+	60, -144, -144, -145, 30, -145, -145, -145, -153, 59,
+	-153, 60, 60, 52, -116, -128, -175, -174, -117, -127,
+	-179, 155, 129, 135, 136, 131, 57, 122, 28, 128,
+	130, 149, 127, -179, 155, -111, -112, 124, 22, 122,
+	28, 149, -128, -105, 59, -37, 39, 111, -51, -38,
+	11, 98, -117, -35, -33, 72, -61, -61, -186, -36,
+	-132, 107, 181, 143, 179, 175, 195, 186, 208, 177,
+	209, -129, -132, -61, -61, -117, -61, -61, 252, -82,
+	80, -37, 78, -92, 52, -93, -70, -72, -71, -185,
+	-2, -88, -116, -91, -82, -97, -37, -37, -37, 54,
+	-37, -185, -185, -185, -186, 55, -82, -55, 228, 232,
+	233, -163, -164, -167, -166, -116, -170, 57, 57, 54,
+	-143, 52, 59, 60, 61, 68, 235, 67, 56, -145,
+	-145, 57, 107, 56, 55, 56, 55, 56, 55, -51,
+	55, 81, -127, -116, -127, -116, -51, -127, -116, -107,
+	-55, -39, -186, -61, -186, -140, -140, -140, -149, -140,
+	169, -140, 169, -186, -186, -186, 55, 19, -186, 55,
+	19, -185, -32, 250, -37, 27, -92, 55, -186, -186,
+	-186, 55, 111, -186, -86, -89, -116, -89, -89, -89,
+	-125, -116, -86, 56, 55, -140, -89, -151, 206, 9,
+	-144, 59, -144, 60, 60, -128, -174, -164, 54, 26,
+	-80, 13, -144, 57, -61, -61, -61, -61, -61, -186,
+	59, 28, -72, 34, -2, -185, -116, -116, 55, 56,
+	-186, -186, -186, -54, -169, -168, 53, 132, 66, -166,
+	56, -152, 128, 28, 127, 235, -145, -145, 56, 56,
+	-89, -185, -81, 14, 16, -186, -186, -186, -186, -31,
+	91, 255, 9, -70, -2, 111, -116, -168, 57, -158,
+	81, 59, 138, -142, 66, 28, 28, 56, -171, -172,
+	149, -37, -69, -186, 253, 49, 256, -93, -186, -116,
+	60, -51, 59, -178, -186, 55, -116, 39, 254, 257,
+	54, -176, -172, 34, 39, -89, 151, 255, 56, 152,
+	256, -181, -182, 52, -185, 257, -182, 52, 10, 9,
+	-61, 148, -180, 139, 134, 137, 30, -180, -186, -186,
+	133, 29, 68,
 }
 var yyDef = [...]int{
 
 	22, -2, 2, -2, 5, 6, 7, 8, 9, 10,
 	11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
-	21, 522, 0, 290, 290, 290, 290, 290, 290, 0,
-	592, 575, 0, 0, 0, 0, -2, 278, 279, 0,
-	281, 282, 802, 802, 802, 802, 802, 0, 0, 0,
-	34, 35, 800, 1, 3, 530, 0, 0, 294, 297,
-	292, 0, 575, 0, 0, 0, 61, 62, 0, 0,
-	0, 788, 0, 789, 573, 573, 573, 593, 594, 597,
-	598, 698, 699, 700, 701, 702, 703, 704, 705, 706,
-	707, 708, 709, 710, 711, 712, 713, 714, 715, 716,
+	21, 532, 0, 300, 300, 300, 300, 300, 300, 0,
+	602, 585, 0, 0, 0, 0, -2, 288, 289, 0,
+	291, 292, 815, 815, 815, 815, 815, 0, 0, 0,
+	34, 35, 813, 1, 3, 540, 0, 0, 304, 307,
+	302, 0, 585, 0, 0, 0, 61, 62, 0, 0,
+	0, 801, 0, 802, 583, 583, 583, 603, 604, 607,
+	608, 708, 709, 710, 711, 712, 713, 714, 715, 716,
 	717, 718, 719, 720, 721, 722, 723, 724, 725, 726,
 	727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
 	737, 738, 739, 740, 741, 742, 743, 744, 745, 746,
@@ -2279,123 +2288,126 @@ var yyDef = [...]int{
 	757, 758, 759, 760, 761, 762, 763, 764, 765, 766,
 	767, 768, 769, 770, 771, 772, 773, 774, 775, 776,
 	777, 778, 779, 780, 781, 782, 783, 784, 785, 786,
-	787, 790, 791, 792, 793, 794, 795, 796, 797, 798,
-	799, 0, 0, 576, 0, 571, 0, 571, 571, 571,
-	0, 235, 361, 601, 602, 788, 789, 0, 0, 0,
-	0, 803, 803, 803, 803, 0, 803, 0, 254, 255,
-	258, 259, 260, 261, 262, 803, 275, 276, 267, 277,
-	280, 283, 284, 285, 286, 287, 802, 802, 28, 534,
-	0, 0, 522, 30, 0, 290, 295, 296, 300, 298,
-	299, 291, 0, 308, 312, 0, 369, 0, 374, 376,
-	-2, -2, 0, 411, 412, 413, 414, 415, 0, 0,
-	0, 0, 0, 0, 0, 0, 439, 440, 441, 442,
-	507, 508, 509, 510, 511, 512, 513, 514, 378, 379,
-	504, 554, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 495, 0, 469, 469, 469, 469, 469, 469, 469,
-	469, 0, 0, 0, 0, 0, 0, 319, 321, 322,
-	323, 342, 0, 344, 0, 0, 42, 46, 0, 779,
-	558, -2, -2, 0, 0, 599, 600, -2, 705, -2,
-	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, 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, 689, 690, 691, 692, 693, 694,
-	695, 696, 697, 0, 0, 81, 0, 79, 0, 803,
-	0, 69, 0, 0, 0, 0, 0, 803, 0, 0,
-	0, 0, 0, 0, 0, 234, 0, 236, 803, 803,
-	803, 803, 803, 803, 803, 803, 245, 804, 805, 246,
-	247, 248, 803, 803, 250, 0, 268, 264, 265, 0,
-	0, 263, 288, 289, 29, 801, 23, 0, 0, 531,
-	0, 523, 524, 527, 530, 28, 297, 0, 302, 301,
-	293, 0, 309, 0, 0, 0, 313, 0, 315, 316,
-	0, 372, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 396, 397, 398, 399, 400, 401, 402, 375, 0,
-	389, 0, 0, 0, 431, 432, 433, 434, 435, 436,
-	437, 0, 304, 28, 0, 409, 0, 0, 0, 0,
-	0, 0, 0, 0, 300, 0, 496, 0, 461, 0,
-	462, 463, 464, 465, 466, 467, 468, 0, 304, 0,
-	0, 44, 0, 360, 0, 0, 0, 0, 0, 0,
-	349, 0, 0, 352, 0, 0, 0, 0, 343, 0,
-	0, 363, 751, 345, 0, 347, 348, -2, 0, 0,
-	0, 40, 41, 0, 47, 779, 49, 50, 0, 0,
-	0, 162, 566, 567, 568, 564, 194, 0, 0, 145,
-	141, 87, 88, 89, 134, 91, 134, 134, 134, 134,
-	159, 159, 159, 159, 117, 118, 119, 120, 121, 0,
-	0, 104, 134, 134, 134, 108, 124, 125, 126, 127,
-	128, 129, 130, 131, 92, 93, 94, 95, 96, 97,
-	98, 136, 136, 136, 138, 138, 595, 64, 0, 72,
-	0, 803, 0, 803, 77, 0, 210, 0, 229, 572,
-	0, 803, 232, 233, 362, 603, 604, 237, 238, 239,
-	240, 241, 242, 243, 244, 249, 253, 0, 271, 0,
-	0, 257, 256, 535, 0, 0, 0, 0, 0, 526,
-	528, 529, 534, 31, 300, 0, 515, 0, 0, 0,
-	303, 26, 370, 371, 373, 390, 0, 392, 394, 314,
-	310, 0, 505, -2, 380, 381, 405, 406, 407, 0,
-	0, 0, 0, 403, 385, 0, 416, 417, 418, 419,
-	420, 421, 422, 423, 424, 425, 426, 427, 430, 480,
-	481, 0, 428, 429, 438, 0, 0, 305, 306, 408,
-	0, 553, 28, 0, 0, 0, 0, 0, 504, 0,
-	0, 0, 0, 502, 499, 0, 0, 470, 0, 0,
-	0, 0, 0, 0, 359, 367, 555, 0, 320, 338,
-	340, 0, 335, 350, 351, 353, 0, 355, 0, 357,
-	358, 324, 325, 326, 0, 0, 0, 0, 346, 367,
-	0, 367, 43, 559, 48, 0, 0, 53, 54, 560,
-	561, 562, 0, 78, 195, 197, 200, 201, 202, 82,
-	83, 84, 0, 0, 192, 0, 0, 0, 0, 0,
-	186, 187, 80, 148, 146, 0, 143, 142, 90, 0,
-	159, 159, 111, 112, 162, 0, 162, 162, 162, 0,
-	0, 105, 106, 107, 99, 0, 100, 101, 102, 0,
-	103, 0, 0, 803, 66, 0, 70, 71, 67, 574,
-	68, 802, 0, 0, 587, 211, 577, 578, 579, 580,
-	581, 582, 583, 584, 585, 586, 0, 228, 803, 231,
-	268, 252, 0, 0, 269, 270, 0, 532, 533, 0,
-	525, 24, 0, 569, 570, 516, 517, 317, 391, 393,
-	395, 0, 304, 382, 403, 386, 0, 383, 0, 0,
-	377, 443, 0, 0, 410, -2, 446, 447, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 522, 0, 500,
-	0, 0, 460, 471, 472, 473, 474, 547, 0, 0,
-	-2, 0, 0, 522, 0, 0, 0, 332, 339, 0,
-	0, 333, 0, 334, 354, 356, 0, 0, 0, 0,
-	330, 522, 367, 39, 51, 52, 0, 0, 58, 163,
-	164, 0, 198, 0, 0, 0, 181, 0, 0, 184,
-	185, 0, 155, 0, 147, 86, 144, 0, 162, 162,
-	113, 0, 114, 115, 116, 0, 132, 0, 0, 0,
-	0, 596, 65, 73, 74, 0, 203, 802, 0, 212,
-	213, 214, 215, 216, 217, 218, 219, 220, 221, 222,
-	802, 0, 0, 802, 588, 589, 590, 591, 0, 230,
-	271, 272, 273, 536, 0, 25, 367, 0, 311, 506,
-	0, 384, 0, 404, 387, 444, 307, 0, 134, 134,
-	485, 134, 138, 488, 134, 490, 134, 493, 0, 0,
-	0, 0, 505, 0, 0, 0, 497, 459, 503, 0,
-	32, 0, 547, 537, 549, 551, 0, 28, 0, 543,
-	0, 530, 556, 368, 557, 336, 0, 341, 0, 0,
-	0, 344, 0, 530, 38, 55, 56, 57, 196, 199,
-	0, 188, 134, 191, 182, 183, 0, 157, 0, 149,
-	150, 151, 152, 153, 154, 135, 109, 110, 160, 161,
-	159, 0, 159, 0, 139, 0, 803, 0, 0, 204,
-	0, 205, 207, 208, 209, 0, 251, 518, 318, 445,
-	388, 448, 482, 159, 486, 487, 489, 491, 492, 494,
-	450, 449, 451, 0, 0, 454, 0, 0, 0, 0,
-	0, 501, 0, 33, 0, 552, -2, 0, 0, 0,
-	45, 36, 0, 328, 0, 0, 0, 363, 331, 37,
-	173, 0, 190, 0, 165, 158, 0, 162, 133, 162,
-	0, 0, 63, 75, 76, 0, 0, 520, 0, 483,
-	484, 0, 0, 0, 0, 475, 458, 498, 0, 550,
-	0, -2, 0, 545, 544, 0, 337, 364, 365, 366,
-	327, 172, 174, 0, 179, 0, 189, 0, 170, 0,
-	167, 169, 156, 122, 123, 137, 140, 0, 0, 27,
-	0, 0, 452, 453, 455, 456, 0, 0, 0, 0,
-	540, 28, 0, 329, 175, 176, 0, 180, 178, 0,
-	85, 0, 166, 168, 69, 0, 224, 0, 521, 519,
-	457, 0, 0, 0, 548, -2, 546, 177, 0, 171,
-	72, 223, 0, 0, 476, 0, 479, 0, 206, 225,
-	0, 477, 0, 0, 0, 193, 0, 0, 0, 478,
-	0, 0, 226, 227,
+	787, 788, 789, 790, 791, 792, 793, 794, 795, 796,
+	797, 798, 799, 800, 803, 804, 805, 806, 807, 808,
+	809, 810, 811, 812, 0, 0, 586, 0, 581, 0,
+	581, 581, 581, 0, 245, 371, 611, 612, 801, 802,
+	0, 0, 0, 0, 816, 816, 816, 816, 0, 816,
+	0, 264, 265, 268, 269, 270, 271, 272, 816, 285,
+	286, 277, 287, 290, 293, 294, 295, 296, 297, 815,
+	815, 28, 544, 0, 0, 532, 30, 0, 300, 305,
+	306, 310, 308, 309, 301, 0, 318, 322, 0, 379,
+	0, 384, 386, -2, -2, 0, 421, 422, 423, 424,
+	425, 0, 0, 0, 0, 0, 0, 0, 0, 449,
+	450, 451, 452, 517, 518, 519, 520, 521, 522, 523,
+	524, 388, 389, 514, 564, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 505, 0, 479, 479, 479, 479,
+	479, 479, 479, 479, 0, 0, 0, 0, 0, 0,
+	329, 331, 332, 333, 352, 0, 354, 0, 0, 42,
+	46, 0, 792, 568, -2, -2, 0, 0, 609, 610,
+	-2, 716, -2, 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, 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, 689, 690, 691,
+	692, 693, 694, 695, 696, 697, 698, 699, 700, 701,
+	702, 703, 704, 705, 706, 707, 0, 0, 81, 0,
+	79, 0, 816, 0, 69, 0, 0, 0, 0, 0,
+	816, 0, 0, 0, 0, 0, 0, 0, 244, 0,
+	246, 816, 816, 816, 816, 816, 816, 816, 816, 255,
+	817, 818, 256, 257, 258, 816, 816, 260, 0, 278,
+	274, 275, 0, 0, 273, 298, 299, 29, 814, 23,
+	0, 0, 541, 0, 533, 534, 537, 540, 28, 307,
+	0, 312, 311, 303, 0, 319, 0, 0, 0, 323,
+	0, 325, 326, 0, 382, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 406, 407, 408, 409, 410, 411,
+	412, 385, 0, 399, 0, 0, 0, 441, 442, 443,
+	444, 445, 446, 447, 0, 314, 28, 0, 419, 0,
+	0, 0, 0, 0, 0, 0, 0, 310, 0, 506,
+	0, 471, 0, 472, 473, 474, 475, 476, 477, 478,
+	0, 314, 0, 0, 44, 0, 370, 0, 0, 0,
+	0, 0, 0, 359, 0, 0, 362, 0, 0, 0,
+	0, 353, 0, 0, 373, 763, 355, 0, 357, 358,
+	-2, 0, 0, 0, 40, 41, 0, 47, 792, 49,
+	50, 0, 0, 0, 162, 576, 577, 578, 574, 204,
+	0, 0, 145, 141, 87, 88, 89, 134, 91, 134,
+	134, 134, 134, 159, 159, 159, 159, 117, 118, 119,
+	120, 121, 0, 0, 104, 134, 134, 134, 108, 124,
+	125, 126, 127, 128, 129, 130, 131, 92, 93, 94,
+	95, 96, 97, 98, 136, 136, 136, 138, 138, 605,
+	64, 0, 72, 0, 816, 0, 816, 77, 0, 220,
+	0, 239, 582, 0, 816, 242, 243, 372, 613, 614,
+	247, 248, 249, 250, 251, 252, 253, 254, 259, 263,
+	0, 281, 0, 0, 267, 266, 545, 0, 0, 0,
+	0, 0, 536, 538, 539, 544, 31, 310, 0, 525,
+	0, 0, 0, 313, 26, 380, 381, 383, 400, 0,
+	402, 404, 324, 320, 0, 515, -2, 390, 391, 415,
+	416, 417, 0, 0, 0, 0, 413, 395, 0, 426,
+	427, 428, 429, 430, 431, 432, 433, 434, 435, 436,
+	437, 440, 490, 491, 0, 438, 439, 448, 0, 0,
+	315, 316, 418, 0, 563, 28, 0, 0, 0, 0,
+	0, 514, 0, 0, 0, 0, 512, 509, 0, 0,
+	480, 0, 0, 0, 0, 0, 0, 369, 377, 565,
+	0, 330, 348, 350, 0, 345, 360, 361, 363, 0,
+	365, 0, 367, 368, 334, 335, 336, 0, 0, 0,
+	0, 356, 377, 0, 377, 43, 569, 48, 0, 0,
+	53, 54, 570, 571, 572, 0, 78, 205, 207, 210,
+	211, 212, 82, 83, 84, 0, 0, 192, 0, 0,
+	0, 0, 0, 186, 187, 80, 148, 146, 0, 143,
+	142, 90, 0, 159, 159, 111, 112, 162, 0, 162,
+	162, 162, 0, 0, 105, 106, 107, 99, 0, 100,
+	101, 102, 0, 103, 0, 0, 816, 66, 0, 70,
+	71, 67, 584, 68, 815, 0, 0, 597, 221, 587,
+	588, 589, 590, 591, 592, 593, 594, 595, 596, 0,
+	238, 816, 241, 278, 262, 0, 0, 279, 280, 0,
+	542, 543, 0, 535, 24, 0, 579, 580, 526, 527,
+	327, 401, 403, 405, 0, 314, 392, 413, 396, 0,
+	393, 0, 0, 387, 453, 0, 0, 420, -2, 456,
+	457, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	532, 0, 510, 0, 0, 470, 481, 482, 483, 484,
+	557, 0, 0, -2, 0, 0, 532, 0, 0, 0,
+	342, 349, 0, 0, 343, 0, 344, 364, 366, 0,
+	0, 0, 0, 340, 532, 377, 39, 51, 52, 0,
+	0, 58, 163, 164, 0, 208, 0, 0, 0, 181,
+	0, 0, 184, 185, 0, 155, 0, 147, 86, 144,
+	0, 162, 162, 113, 0, 114, 115, 116, 0, 132,
+	0, 0, 0, 0, 606, 65, 73, 74, 0, 213,
+	815, 0, 222, 223, 224, 225, 226, 227, 228, 229,
+	230, 231, 232, 815, 0, 0, 815, 598, 599, 600,
+	601, 0, 240, 281, 282, 283, 546, 0, 25, 377,
+	0, 321, 516, 0, 394, 0, 414, 397, 454, 317,
+	0, 134, 134, 495, 134, 138, 498, 134, 500, 134,
+	503, 0, 0, 0, 0, 515, 0, 0, 0, 507,
+	469, 513, 0, 32, 0, 557, 547, 559, 561, 0,
+	28, 0, 553, 0, 540, 566, 378, 567, 346, 0,
+	351, 0, 0, 0, 354, 0, 540, 38, 55, 56,
+	57, 206, 209, 0, 188, 134, 191, 182, 183, 0,
+	157, 0, 149, 150, 151, 152, 153, 154, 135, 109,
+	110, 160, 161, 159, 0, 159, 0, 139, 0, 816,
+	0, 0, 214, 0, 215, 217, 218, 219, 0, 261,
+	528, 328, 455, 398, 458, 492, 159, 496, 497, 499,
+	501, 502, 504, 460, 459, 461, 0, 0, 464, 0,
+	0, 0, 0, 0, 511, 0, 33, 0, 562, -2,
+	0, 0, 0, 45, 36, 0, 338, 0, 0, 0,
+	373, 341, 37, 173, 0, 190, 0, 165, 158, 0,
+	162, 133, 162, 0, 0, 63, 75, 76, 0, 0,
+	530, 0, 493, 494, 0, 0, 0, 0, 485, 468,
+	508, 0, 560, 0, -2, 0, 555, 554, 0, 347,
+	374, 375, 376, 337, 172, 174, 0, 179, 0, 189,
+	0, 170, 0, 167, 169, 156, 122, 123, 137, 140,
+	0, 0, 27, 0, 0, 462, 463, 465, 466, 0,
+	0, 0, 0, 550, 28, 0, 339, 175, 176, 0,
+	180, 178, 0, 85, 0, 166, 168, 69, 0, 234,
+	0, 531, 529, 467, 0, 0, 0, 558, -2, 556,
+	177, 0, 171, 72, 233, 0, 0, 486, 0, 489,
+	0, 216, 235, 0, 487, 0, 0, 0, 193, 0,
+	0, 194, 195, 0, 0, 488, 196, 0, 0, 0,
+	0, 0, 197, 199, 200, 0, 0, 198, 236, 237,
+	201, 202, 203,
 }
 var yyTok1 = [...]int{
 
@@ -2404,7 +2416,7 @@ var yyTok1 = [...]int{
 	3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 	3, 3, 3, 74, 3, 3, 3, 101, 93, 3,
 	54, 56, 98, 96, 55, 97, 111, 99, 3, 3,
-	3, 3, 3, 3, 3, 3, 3, 3, 3, 255,
+	3, 3, 3, 3, 3, 3, 3, 3, 3, 259,
 	82, 81, 83, 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,
@@ -2438,7 +2450,7 @@ var yyTok2 = [...]int{
 	219, 220, 221, 222, 223, 224, 225, 226, 227, 228,
 	229, 230, 231, 232, 233, 234, 235, 236, 237, 238,
 	239, 240, 241, 242, 243, 244, 245, 246, 247, 248,
-	249, 250, 251, 252, 253, 254,
+	249, 250, 251, 252, 253, 254, 255, 256, 257, 258,
 }
 var yyTok3 = [...]int{
 	0,
@@ -2783,35 +2795,35 @@ yydefault:
 
 	case 1:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:309
+		//line sql.y:312
 		{
 			setParseTree(yylex, yyDollar[1].statement)
 		}
 	case 2:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:314
+		//line sql.y:317
 		{
 		}
 	case 3:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:315
+		//line sql.y:318
 		{
 		}
 	case 4:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:319
+		//line sql.y:322
 		{
 			yyVAL.statement = yyDollar[1].selStmt
 		}
 	case 22:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:340
+		//line sql.y:343
 		{
 			setParseTree(yylex, nil)
 		}
 	case 23:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:346
+		//line sql.y:349
 		{
 			sel := yyDollar[1].selStmt.(*Select)
 			sel.OrderBy = yyDollar[2].orderBy
@@ -2821,55 +2833,55 @@ yydefault:
 		}
 	case 24:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:354
+		//line sql.y:357
 		{
 			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 25:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:358
+		//line sql.y:361
 		{
 			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 26:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:364
+		//line sql.y:367
 		{
 			yyVAL.statement = &Stream{Comments: Comments(yyDollar[2].bytes2), SelectExpr: yyDollar[3].selectExpr, Table: yyDollar[5].tableName}
 		}
 	case 27:
 		yyDollar = yyS[yypt-10 : yypt+1]
-		//line sql.y:371
+		//line sql.y:374
 		{
 			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 28:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:377
+		//line sql.y:380
 		{
 			yyVAL.selStmt = yyDollar[1].selStmt
 		}
 	case 29:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:381
+		//line sql.y:384
 		{
 			yyVAL.selStmt = &ParenSelect{Select: yyDollar[2].selStmt}
 		}
 	case 30:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:387
+		//line sql.y:390
 		{
 			yyVAL.selStmt = yyDollar[1].selStmt
 		}
 	case 31:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:391
+		//line sql.y:394
 		{
 			yyVAL.selStmt = &ParenSelect{Select: yyDollar[2].selStmt}
 		}
 	case 32:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:398
+		//line sql.y:401
 		{
 			// insert_data returns a *Insert pre-filled with Columns & Values
 			ins := yyDollar[6].ins
@@ -2883,7 +2895,7 @@ yydefault:
 		}
 	case 33:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:410
+		//line sql.y:413
 		{
 			cols := make(Columns, 0, len(yyDollar[7].updateExprs))
 			vals := make(ValTuple, 0, len(yyDollar[8].updateExprs))
@@ -2895,174 +2907,174 @@ yydefault:
 		}
 	case 34:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:422
+		//line sql.y:425
 		{
 			yyVAL.str = InsertStr
 		}
 	case 35:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:426
+		//line sql.y:429
 		{
 			yyVAL.str = ReplaceStr
 		}
 	case 36:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:432
+		//line sql.y:435
 		{
 			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 37:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:438
+		//line sql.y:441
 		{
 			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 38:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:442
+		//line sql.y:445
 		{
 			yyVAL.statement = &Delete{Comments: Comments(yyDollar[2].bytes2), Targets: yyDollar[4].tableNames, TableExprs: yyDollar[6].tableExprs, Where: NewWhere(WhereStr, yyDollar[7].expr)}
 		}
 	case 39:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:446
+		//line sql.y:449
 		{
 			yyVAL.statement = &Delete{Comments: Comments(yyDollar[2].bytes2), Targets: yyDollar[3].tableNames, TableExprs: yyDollar[5].tableExprs, Where: NewWhere(WhereStr, yyDollar[6].expr)}
 		}
 	case 40:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:451
+		//line sql.y:454
 		{
 		}
 	case 41:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:452
+		//line sql.y:455
 		{
 		}
 	case 42:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:456
+		//line sql.y:459
 		{
 			yyVAL.tableNames = TableNames{yyDollar[1].tableName}
 		}
 	case 43:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:460
+		//line sql.y:463
 		{
 			yyVAL.tableNames = append(yyVAL.tableNames, yyDollar[3].tableName)
 		}
 	case 44:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:465
+		//line sql.y:468
 		{
 			yyVAL.partitions = nil
 		}
 	case 45:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:469
+		//line sql.y:472
 		{
 			yyVAL.partitions = yyDollar[3].partitions
 		}
 	case 46:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:475
+		//line sql.y:478
 		{
 			yyVAL.statement = &Set{Comments: Comments(yyDollar[2].bytes2), Exprs: yyDollar[3].setExprs}
 		}
 	case 47:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:479
+		//line sql.y:482
 		{
 			yyVAL.statement = &Set{Comments: Comments(yyDollar[2].bytes2), Scope: yyDollar[3].str, Exprs: yyDollar[4].setExprs}
 		}
 	case 48:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:483
+		//line sql.y:486
 		{
 			yyVAL.statement = &Set{Comments: Comments(yyDollar[2].bytes2), Scope: yyDollar[3].str, Exprs: yyDollar[5].setExprs}
 		}
 	case 49:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:487
+		//line sql.y:490
 		{
 			yyVAL.statement = &Set{Comments: Comments(yyDollar[2].bytes2), Exprs: yyDollar[4].setExprs}
 		}
 	case 50:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:493
+		//line sql.y:496
 		{
 			yyVAL.setExprs = SetExprs{yyDollar[1].setExpr}
 		}
 	case 51:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:497
+		//line sql.y:500
 		{
 			yyVAL.setExprs = append(yyVAL.setExprs, yyDollar[3].setExpr)
 		}
 	case 52:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:503
+		//line sql.y:506
 		{
 			yyVAL.setExpr = &SetExpr{Name: NewColIdent(TransactionStr), Expr: NewStrVal([]byte(yyDollar[3].str))}
 		}
 	case 53:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:507
+		//line sql.y:510
 		{
 			yyVAL.setExpr = &SetExpr{Name: NewColIdent(TransactionStr), Expr: NewStrVal([]byte(TxReadWrite))}
 		}
 	case 54:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:511
+		//line sql.y:514
 		{
 			yyVAL.setExpr = &SetExpr{Name: NewColIdent(TransactionStr), Expr: NewStrVal([]byte(TxReadOnly))}
 		}
 	case 55:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:517
+		//line sql.y:520
 		{
 			yyVAL.str = IsolationLevelRepeatableRead
 		}
 	case 56:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:521
+		//line sql.y:524
 		{
 			yyVAL.str = IsolationLevelReadCommitted
 		}
 	case 57:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:525
+		//line sql.y:528
 		{
 			yyVAL.str = IsolationLevelReadUncommitted
 		}
 	case 58:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:529
+		//line sql.y:532
 		{
 			yyVAL.str = IsolationLevelSerializable
 		}
 	case 59:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:535
+		//line sql.y:538
 		{
 			yyVAL.str = SessionStr
 		}
 	case 60:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:539
+		//line sql.y:542
 		{
 			yyVAL.str = GlobalStr
 		}
 	case 61:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:545
+		//line sql.y:548
 		{
 			yyDollar[1].ddl.TableSpec = yyDollar[2].TableSpec
 			yyVAL.statement = yyDollar[1].ddl
 		}
 	case 62:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:550
+		//line sql.y:553
 		{
 			// Create table [name] like [name]
 			yyDollar[1].ddl.OptLike = yyDollar[2].optLike
@@ -3070,26 +3082,26 @@ yydefault:
 		}
 	case 63:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:556
+		//line sql.y:559
 		{
 			// Change this to an alter statement
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[7].tableName, NewName: yyDollar[7].tableName}
 		}
 	case 64:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:561
+		//line sql.y:564
 		{
 			yyVAL.statement = &DDL{Action: CreateStr, NewName: yyDollar[3].tableName.ToViewName()}
 		}
 	case 65:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:565
+		//line sql.y:568
 		{
 			yyVAL.statement = &DDL{Action: CreateStr, NewName: yyDollar[5].tableName.ToViewName()}
 		}
 	case 66:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:569
+		//line sql.y:572
 		{
 			yyVAL.statement = &DDL{Action: CreateVindexStr, VindexSpec: &VindexSpec{
 				Name:   yyDollar[3].colIdent,
@@ -3099,120 +3111,120 @@ yydefault:
 		}
 	case 67:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:577
+		//line sql.y:580
 		{
 			yyVAL.statement = &DBDDL{Action: CreateStr, DBName: string(yyDollar[4].bytes)}
 		}
 	case 68:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:581
+		//line sql.y:584
 		{
 			yyVAL.statement = &DBDDL{Action: CreateStr, DBName: string(yyDollar[4].bytes)}
 		}
 	case 69:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:586
+		//line sql.y:589
 		{
 			yyVAL.colIdent = NewColIdent("")
 		}
 	case 70:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:590
+		//line sql.y:593
 		{
 			yyVAL.colIdent = yyDollar[2].colIdent
 		}
 	case 71:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:596
+		//line sql.y:599
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
 	case 72:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:601
+		//line sql.y:604
 		{
 			var v []VindexParam
 			yyVAL.vindexParams = v
 		}
 	case 73:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:606
+		//line sql.y:609
 		{
 			yyVAL.vindexParams = yyDollar[2].vindexParams
 		}
 	case 74:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:612
+		//line sql.y:615
 		{
 			yyVAL.vindexParams = make([]VindexParam, 0, 4)
 			yyVAL.vindexParams = append(yyVAL.vindexParams, yyDollar[1].vindexParam)
 		}
 	case 75:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:617
+		//line sql.y:620
 		{
 			yyVAL.vindexParams = append(yyVAL.vindexParams, yyDollar[3].vindexParam)
 		}
 	case 76:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:623
+		//line sql.y:626
 		{
 			yyVAL.vindexParam = VindexParam{Key: yyDollar[1].colIdent, Val: yyDollar[3].str}
 		}
 	case 77:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:629
+		//line sql.y:632
 		{
 			yyVAL.ddl = &DDL{Action: CreateStr, NewName: yyDollar[4].tableName}
 			setDDL(yylex, yyVAL.ddl)
 		}
 	case 78:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:636
+		//line sql.y:639
 		{
 			yyVAL.TableSpec = yyDollar[2].TableSpec
 			yyVAL.TableSpec.Options = yyDollar[4].str
 		}
 	case 79:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:643
+		//line sql.y:646
 		{
 			yyVAL.optLike = &OptLike{LikeTable: yyDollar[2].tableName}
 		}
 	case 80:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:647
+		//line sql.y:650
 		{
 			yyVAL.optLike = &OptLike{LikeTable: yyDollar[3].tableName}
 		}
 	case 81:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:653
+		//line sql.y:656
 		{
 			yyVAL.TableSpec = &TableSpec{}
 			yyVAL.TableSpec.AddColumn(yyDollar[1].columnDefinition)
 		}
 	case 82:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:658
+		//line sql.y:661
 		{
 			yyVAL.TableSpec.AddColumn(yyDollar[3].columnDefinition)
 		}
 	case 83:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:662
+		//line sql.y:665
 		{
 			yyVAL.TableSpec.AddIndex(yyDollar[3].indexDefinition)
 		}
 	case 84:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:666
+		//line sql.y:669
 		{
 			yyVAL.TableSpec.AddConstraint(yyDollar[3].constraintDefinition)
 		}
 	case 85:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:672
+		//line sql.y:675
 		{
 			yyDollar[2].columnType.NotNull = yyDollar[3].boolVal
 			yyDollar[2].columnType.Default = yyDollar[4].optVal
@@ -3224,7 +3236,7 @@ yydefault:
 		}
 	case 86:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:683
+		//line sql.y:686
 		{
 			yyVAL.columnType = yyDollar[1].columnType
 			yyVAL.columnType.Unsigned = yyDollar[2].boolVal
@@ -3232,62 +3244,62 @@ yydefault:
 		}
 	case 90:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:694
+		//line sql.y:697
 		{
 			yyVAL.columnType = yyDollar[1].columnType
 			yyVAL.columnType.Length = yyDollar[2].optVal
 		}
 	case 91:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:699
+		//line sql.y:702
 		{
 			yyVAL.columnType = yyDollar[1].columnType
 		}
 	case 92:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:705
+		//line sql.y:708
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 93:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:709
+		//line sql.y:712
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 94:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:713
+		//line sql.y:716
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 95:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:717
+		//line sql.y:720
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 96:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:721
+		//line sql.y:724
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 97:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:725
+		//line sql.y:728
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 98:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:729
+		//line sql.y:732
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 99:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:735
+		//line sql.y:738
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 			yyVAL.columnType.Length = yyDollar[2].LengthScaleOption.Length
@@ -3295,7 +3307,7 @@ yydefault:
 		}
 	case 100:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:741
+		//line sql.y:744
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 			yyVAL.columnType.Length = yyDollar[2].LengthScaleOption.Length
@@ -3303,7 +3315,7 @@ yydefault:
 		}
 	case 101:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:747
+		//line sql.y:750
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 			yyVAL.columnType.Length = yyDollar[2].LengthScaleOption.Length
@@ -3311,7 +3323,7 @@ yydefault:
 		}
 	case 102:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:753
+		//line sql.y:756
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 			yyVAL.columnType.Length = yyDollar[2].LengthScaleOption.Length
@@ -3319,7 +3331,7 @@ yydefault:
 		}
 	case 103:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:759
+		//line sql.y:762
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 			yyVAL.columnType.Length = yyDollar[2].LengthScaleOption.Length
@@ -3327,206 +3339,206 @@ yydefault:
 		}
 	case 104:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:767
+		//line sql.y:770
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 105:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:771
+		//line sql.y:774
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
 	case 106:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:775
+		//line sql.y:778
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
 	case 107:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:779
+		//line sql.y:782
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
 	case 108:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:783
+		//line sql.y:786
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 109:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:789
+		//line sql.y:792
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal, Charset: yyDollar[3].str, Collate: yyDollar[4].str}
 		}
 	case 110:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:793
+		//line sql.y:796
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal, Charset: yyDollar[3].str, Collate: yyDollar[4].str}
 		}
 	case 111:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:797
+		//line sql.y:800
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
 	case 112:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:801
+		//line sql.y:804
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
 	case 113:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:805
+		//line sql.y:808
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Charset: yyDollar[2].str, Collate: yyDollar[3].str}
 		}
 	case 114:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:809
+		//line sql.y:812
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Charset: yyDollar[2].str, Collate: yyDollar[3].str}
 		}
 	case 115:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:813
+		//line sql.y:816
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Charset: yyDollar[2].str, Collate: yyDollar[3].str}
 		}
 	case 116:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:817
+		//line sql.y:820
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Charset: yyDollar[2].str, Collate: yyDollar[3].str}
 		}
 	case 117:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:821
+		//line sql.y:824
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 118:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:825
+		//line sql.y:828
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 119:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:829
+		//line sql.y:832
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 120:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:833
+		//line sql.y:836
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 121:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:837
+		//line sql.y:840
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 122:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:841
+		//line sql.y:844
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), EnumValues: yyDollar[3].strs, Charset: yyDollar[5].str, Collate: yyDollar[6].str}
 		}
 	case 123:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:846
+		//line sql.y:849
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), EnumValues: yyDollar[3].strs, Charset: yyDollar[5].str, Collate: yyDollar[6].str}
 		}
 	case 124:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:852
+		//line sql.y:855
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 125:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:856
+		//line sql.y:859
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 126:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:860
+		//line sql.y:863
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 127:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:864
+		//line sql.y:867
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 128:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:868
+		//line sql.y:871
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 129:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:872
+		//line sql.y:875
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 130:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:876
+		//line sql.y:879
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 131:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:880
+		//line sql.y:883
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 132:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:886
+		//line sql.y:889
 		{
 			yyVAL.strs = make([]string, 0, 4)
 			yyVAL.strs = append(yyVAL.strs, "'"+string(yyDollar[1].bytes)+"'")
 		}
 	case 133:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:891
+		//line sql.y:894
 		{
 			yyVAL.strs = append(yyDollar[1].strs, "'"+string(yyDollar[3].bytes)+"'")
 		}
 	case 134:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:896
+		//line sql.y:899
 		{
 			yyVAL.optVal = nil
 		}
 	case 135:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:900
+		//line sql.y:903
 		{
 			yyVAL.optVal = NewIntVal(yyDollar[2].bytes)
 		}
 	case 136:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:905
+		//line sql.y:908
 		{
 			yyVAL.LengthScaleOption = LengthScaleOption{}
 		}
 	case 137:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:909
+		//line sql.y:912
 		{
 			yyVAL.LengthScaleOption = LengthScaleOption{
 				Length: NewIntVal(yyDollar[2].bytes),
@@ -3535,13 +3547,13 @@ yydefault:
 		}
 	case 138:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:917
+		//line sql.y:920
 		{
 			yyVAL.LengthScaleOption = LengthScaleOption{}
 		}
 	case 139:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:921
+		//line sql.y:924
 		{
 			yyVAL.LengthScaleOption = LengthScaleOption{
 				Length: NewIntVal(yyDollar[2].bytes),
@@ -3549,7 +3561,7 @@ yydefault:
 		}
 	case 140:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:927
+		//line sql.y:930
 		{
 			yyVAL.LengthScaleOption = LengthScaleOption{
 				Length: NewIntVal(yyDollar[2].bytes),
@@ -3558,398 +3570,458 @@ yydefault:
 		}
 	case 141:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:935
+		//line sql.y:938
 		{
 			yyVAL.boolVal = BoolVal(false)
 		}
 	case 142:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:939
+		//line sql.y:942
 		{
 			yyVAL.boolVal = BoolVal(true)
 		}
 	case 143:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:944
+		//line sql.y:947
 		{
 			yyVAL.boolVal = BoolVal(false)
 		}
 	case 144:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:948
+		//line sql.y:951
 		{
 			yyVAL.boolVal = BoolVal(true)
 		}
 	case 145:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:954
+		//line sql.y:957
 		{
 			yyVAL.boolVal = BoolVal(false)
 		}
 	case 146:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:958
+		//line sql.y:961
 		{
 			yyVAL.boolVal = BoolVal(false)
 		}
 	case 147:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:962
+		//line sql.y:965
 		{
 			yyVAL.boolVal = BoolVal(true)
 		}
 	case 148:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:967
+		//line sql.y:970
 		{
 			yyVAL.optVal = nil
 		}
 	case 149:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:971
+		//line sql.y:974
 		{
 			yyVAL.optVal = NewStrVal(yyDollar[2].bytes)
 		}
 	case 150:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:975
+		//line sql.y:978
 		{
 			yyVAL.optVal = NewIntVal(yyDollar[2].bytes)
 		}
 	case 151:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:979
+		//line sql.y:982
 		{
 			yyVAL.optVal = NewFloatVal(yyDollar[2].bytes)
 		}
 	case 152:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:983
+		//line sql.y:986
 		{
 			yyVAL.optVal = NewValArg(yyDollar[2].bytes)
 		}
 	case 153:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:987
+		//line sql.y:990
 		{
 			yyVAL.optVal = NewValArg(yyDollar[2].bytes)
 		}
 	case 154:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:991
+		//line sql.y:994
 		{
 			yyVAL.optVal = NewBitVal(yyDollar[2].bytes)
 		}
 	case 155:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:996
+		//line sql.y:999
 		{
 			yyVAL.optVal = nil
 		}
 	case 156:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1000
+		//line sql.y:1003
 		{
 			yyVAL.optVal = NewValArg(yyDollar[3].bytes)
 		}
 	case 157:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1005
+		//line sql.y:1008
 		{
 			yyVAL.boolVal = BoolVal(false)
 		}
 	case 158:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1009
+		//line sql.y:1012
 		{
 			yyVAL.boolVal = BoolVal(true)
 		}
 	case 159:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1014
+		//line sql.y:1017
 		{
 			yyVAL.str = ""
 		}
 	case 160:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1018
+		//line sql.y:1021
 		{
 			yyVAL.str = string(yyDollar[3].bytes)
 		}
 	case 161:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1022
+		//line sql.y:1025
 		{
 			yyVAL.str = string(yyDollar[3].bytes)
 		}
 	case 162:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1027
+		//line sql.y:1030
 		{
 			yyVAL.str = ""
 		}
 	case 163:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1031
+		//line sql.y:1034
 		{
 			yyVAL.str = string(yyDollar[2].bytes)
 		}
 	case 164:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1035
+		//line sql.y:1038
 		{
 			yyVAL.str = string(yyDollar[2].bytes)
 		}
 	case 165:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1040
+		//line sql.y:1043
 		{
 			yyVAL.colKeyOpt = colKeyNone
 		}
 	case 166:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1044
+		//line sql.y:1047
 		{
 			yyVAL.colKeyOpt = colKeyPrimary
 		}
 	case 167:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1048
+		//line sql.y:1051
 		{
 			yyVAL.colKeyOpt = colKey
 		}
 	case 168:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1052
+		//line sql.y:1055
 		{
 			yyVAL.colKeyOpt = colKeyUniqueKey
 		}
 	case 169:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1056
+		//line sql.y:1059
 		{
 			yyVAL.colKeyOpt = colKeyUnique
 		}
 	case 170:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1061
+		//line sql.y:1064
 		{
 			yyVAL.optVal = nil
 		}
 	case 171:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1065
+		//line sql.y:1068
 		{
 			yyVAL.optVal = NewStrVal(yyDollar[2].bytes)
 		}
 	case 172:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1071
+		//line sql.y:1074
 		{
 			yyVAL.indexDefinition = &IndexDefinition{Info: yyDollar[1].indexInfo, Columns: yyDollar[3].indexColumns, Options: yyDollar[5].indexOptions}
 		}
 	case 173:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1075
+		//line sql.y:1078
 		{
 			yyVAL.indexDefinition = &IndexDefinition{Info: yyDollar[1].indexInfo, Columns: yyDollar[3].indexColumns}
 		}
 	case 174:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1081
+		//line sql.y:1084
 		{
 			yyVAL.indexOptions = []*IndexOption{yyDollar[1].indexOption}
 		}
 	case 175:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1085
+		//line sql.y:1088
 		{
 			yyVAL.indexOptions = append(yyVAL.indexOptions, yyDollar[2].indexOption)
 		}
 	case 176:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1091
+		//line sql.y:1094
 		{
 			yyVAL.indexOption = &IndexOption{Name: string(yyDollar[1].bytes), Using: string(yyDollar[2].bytes)}
 		}
 	case 177:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1095
+		//line sql.y:1098
 		{
 			// should not be string
 			yyVAL.indexOption = &IndexOption{Name: string(yyDollar[1].bytes), Value: NewIntVal(yyDollar[3].bytes)}
 		}
 	case 178:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1100
+		//line sql.y:1103
 		{
 			yyVAL.indexOption = &IndexOption{Name: string(yyDollar[1].bytes), Value: NewStrVal(yyDollar[2].bytes)}
 		}
 	case 179:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1106
+		//line sql.y:1109
 		{
 			yyVAL.str = ""
 		}
 	case 180:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1110
+		//line sql.y:1113
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
 	case 181:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1116
+		//line sql.y:1119
 		{
 			yyVAL.indexInfo = &IndexInfo{Type: string(yyDollar[1].bytes) + " " + string(yyDollar[2].bytes), Name: NewColIdent("PRIMARY"), Primary: true, Unique: true}
 		}
 	case 182:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1120
+		//line sql.y:1123
 		{
 			yyVAL.indexInfo = &IndexInfo{Type: string(yyDollar[1].bytes) + " " + string(yyDollar[2].str), Name: NewColIdent(string(yyDollar[3].bytes)), Spatial: true, Unique: false}
 		}
 	case 183:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1124
+		//line sql.y:1127
 		{
 			yyVAL.indexInfo = &IndexInfo{Type: string(yyDollar[1].bytes) + " " + string(yyDollar[2].str), Name: NewColIdent(string(yyDollar[3].bytes)), Unique: true}
 		}
 	case 184:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1128
+		//line sql.y:1131
 		{
 			yyVAL.indexInfo = &IndexInfo{Type: string(yyDollar[1].bytes), Name: NewColIdent(string(yyDollar[2].bytes)), Unique: true}
 		}
 	case 185:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1132
+		//line sql.y:1135
 		{
 			yyVAL.indexInfo = &IndexInfo{Type: string(yyDollar[1].str), Name: NewColIdent(string(yyDollar[2].bytes)), Unique: false}
 		}
 	case 186:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1138
+		//line sql.y:1141
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
 	case 187:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1142
+		//line sql.y:1145
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
 	case 188:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1148
+		//line sql.y:1151
 		{
 			yyVAL.indexColumns = []*IndexColumn{yyDollar[1].indexColumn}
 		}
 	case 189:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1152
+		//line sql.y:1155
 		{
 			yyVAL.indexColumns = append(yyVAL.indexColumns, yyDollar[3].indexColumn)
 		}
 	case 190:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1158
+		//line sql.y:1161
 		{
 			yyVAL.indexColumn = &IndexColumn{Column: yyDollar[1].colIdent, Length: yyDollar[2].optVal}
 		}
 	case 191:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1164
+		//line sql.y:1167
 		{
 			yyVAL.constraintDefinition = &ConstraintDefinition{Name: string(yyDollar[2].bytes), Details: yyDollar[3].constraintInfo}
 		}
 	case 192:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1168
+		//line sql.y:1171
 		{
 			yyVAL.constraintDefinition = &ConstraintDefinition{Details: yyDollar[1].constraintInfo}
 		}
 	case 193:
 		yyDollar = yyS[yypt-10 : yypt+1]
-		//line sql.y:1175
+		//line sql.y:1178
 		{
 			yyVAL.constraintInfo = &ForeignKeyDefinition{Source: yyDollar[4].columns, ReferencedTable: yyDollar[7].tableName, ReferencedColumns: yyDollar[9].columns}
 		}
 	case 194:
+		yyDollar = yyS[yypt-11 : yypt+1]
+		//line sql.y:1182
+		{
+			yyVAL.constraintInfo = &ForeignKeyDefinition{Source: yyDollar[4].columns, ReferencedTable: yyDollar[7].tableName, ReferencedColumns: yyDollar[9].columns, OnDelete: yyDollar[11].ReferenceAction}
+		}
+	case 195:
+		yyDollar = yyS[yypt-11 : yypt+1]
+		//line sql.y:1186
+		{
+			yyVAL.constraintInfo = &ForeignKeyDefinition{Source: yyDollar[4].columns, ReferencedTable: yyDollar[7].tableName, ReferencedColumns: yyDollar[9].columns, OnUpdate: yyDollar[11].ReferenceAction}
+		}
+	case 196:
+		yyDollar = yyS[yypt-12 : yypt+1]
+		//line sql.y:1190
+		{
+			yyVAL.constraintInfo = &ForeignKeyDefinition{Source: yyDollar[4].columns, ReferencedTable: yyDollar[7].tableName, ReferencedColumns: yyDollar[9].columns, OnDelete: yyDollar[11].ReferenceAction, OnUpdate: yyDollar[12].ReferenceAction}
+		}
+	case 197:
+		yyDollar = yyS[yypt-3 : yypt+1]
+		//line sql.y:1196
+		{
+			yyVAL.ReferenceAction = yyDollar[3].ReferenceAction
+		}
+	case 198:
+		yyDollar = yyS[yypt-3 : yypt+1]
+		//line sql.y:1202
+		{
+			yyVAL.ReferenceAction = yyDollar[3].ReferenceAction
+		}
+	case 199:
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:1208
+		{
+			yyVAL.ReferenceAction = Restrict
+		}
+	case 200:
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:1212
+		{
+			yyVAL.ReferenceAction = Cascade
+		}
+	case 201:
+		yyDollar = yyS[yypt-2 : yypt+1]
+		//line sql.y:1216
+		{
+			yyVAL.ReferenceAction = NoAction
+		}
+	case 202:
+		yyDollar = yyS[yypt-2 : yypt+1]
+		//line sql.y:1220
+		{
+			yyVAL.ReferenceAction = SetDefault
+		}
+	case 203:
+		yyDollar = yyS[yypt-2 : yypt+1]
+		//line sql.y:1224
+		{
+			yyVAL.ReferenceAction = SetNull
+		}
+	case 204:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1180
+		//line sql.y:1229
 		{
 			yyVAL.str = ""
 		}
-	case 195:
+	case 205:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1184
+		//line sql.y:1233
 		{
 			yyVAL.str = " " + string(yyDollar[1].str)
 		}
-	case 196:
+	case 206:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1188
+		//line sql.y:1237
 		{
 			yyVAL.str = string(yyDollar[1].str) + ", " + string(yyDollar[3].str)
 		}
-	case 197:
+	case 207:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1196
+		//line sql.y:1245
 		{
 			yyVAL.str = yyDollar[1].str
 		}
-	case 198:
+	case 208:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1200
+		//line sql.y:1249
 		{
 			yyVAL.str = yyDollar[1].str + " " + yyDollar[2].str
 		}
-	case 199:
+	case 209:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1204
+		//line sql.y:1253
 		{
 			yyVAL.str = yyDollar[1].str + "=" + yyDollar[3].str
 		}
-	case 200:
+	case 210:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1210
+		//line sql.y:1259
 		{
 			yyVAL.str = yyDollar[1].colIdent.String()
 		}
-	case 201:
+	case 211:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1214
+		//line sql.y:1263
 		{
 			yyVAL.str = "'" + string(yyDollar[1].bytes) + "'"
 		}
-	case 202:
+	case 212:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1218
+		//line sql.y:1267
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 203:
+	case 213:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:1224
+		//line sql.y:1273
 		{
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName}
 		}
-	case 204:
+	case 214:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:1228
+		//line sql.y:1277
 		{
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName}
 		}
-	case 205:
+	case 215:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:1232
+		//line sql.y:1281
 		{
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName}
 		}
-	case 206:
+	case 216:
 		yyDollar = yyS[yypt-12 : yypt+1]
-		//line sql.y:1236
+		//line sql.y:1285
 		{
 			yyVAL.statement = &DDL{
 				Action: AddColVindexStr,
@@ -3962,9 +4034,9 @@ yydefault:
 				VindexCols: yyDollar[9].columns,
 			}
 		}
-	case 207:
+	case 217:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:1249
+		//line sql.y:1298
 		{
 			yyVAL.statement = &DDL{
 				Action: DropColVindexStr,
@@ -3974,71 +4046,71 @@ yydefault:
 				},
 			}
 		}
-	case 208:
+	case 218:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:1259
+		//line sql.y:1308
 		{
 			// Change this to a rename statement
 			yyVAL.statement = &DDL{Action: RenameStr, Table: yyDollar[4].tableName, NewName: yyDollar[7].tableName}
 		}
-	case 209:
+	case 219:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:1264
+		//line sql.y:1313
 		{
 			// Rename an index can just be an alter
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName}
 		}
-	case 210:
+	case 220:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1269
+		//line sql.y:1318
 		{
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[3].tableName.ToViewName(), NewName: yyDollar[3].tableName.ToViewName()}
 		}
-	case 211:
+	case 221:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1273
+		//line sql.y:1322
 		{
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[4].tableName, PartitionSpec: yyDollar[5].partSpec}
 		}
-	case 223:
+	case 233:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:1292
+		//line sql.y:1341
 		{
 			yyVAL.partSpec = &PartitionSpec{Action: ReorganizeStr, Name: yyDollar[3].colIdent, Definitions: yyDollar[6].partDefs}
 		}
-	case 224:
+	case 234:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1298
+		//line sql.y:1347
 		{
 			yyVAL.partDefs = []*PartitionDefinition{yyDollar[1].partDef}
 		}
-	case 225:
+	case 235:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1302
+		//line sql.y:1351
 		{
 			yyVAL.partDefs = append(yyDollar[1].partDefs, yyDollar[3].partDef)
 		}
-	case 226:
+	case 236:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:1308
+		//line sql.y:1357
 		{
 			yyVAL.partDef = &PartitionDefinition{Name: yyDollar[2].colIdent, Limit: yyDollar[7].expr}
 		}
-	case 227:
+	case 237:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:1312
+		//line sql.y:1361
 		{
 			yyVAL.partDef = &PartitionDefinition{Name: yyDollar[2].colIdent, Maxvalue: true}
 		}
-	case 228:
+	case 238:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1318
+		//line sql.y:1367
 		{
 			yyVAL.statement = &DDL{Action: RenameStr, Table: yyDollar[3].tableName, NewName: yyDollar[5].tableName}
 		}
-	case 229:
+	case 239:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1324
+		//line sql.y:1373
 		{
 			var exists bool
 			if yyDollar[3].byt != 0 {
@@ -4046,16 +4118,16 @@ yydefault:
 			}
 			yyVAL.statement = &DDL{Action: DropStr, Table: yyDollar[4].tableName, IfExists: exists}
 		}
-	case 230:
+	case 240:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:1332
+		//line sql.y:1381
 		{
 			// Change this to an alter statement
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[5].tableName, NewName: yyDollar[5].tableName}
 		}
-	case 231:
+	case 241:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1337
+		//line sql.y:1386
 		{
 			var exists bool
 			if yyDollar[3].byt != 0 {
@@ -4063,130 +4135,130 @@ yydefault:
 			}
 			yyVAL.statement = &DDL{Action: DropStr, Table: yyDollar[4].tableName.ToViewName(), IfExists: exists}
 		}
-	case 232:
+	case 242:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1345
+		//line sql.y:1394
 		{
 			yyVAL.statement = &DBDDL{Action: DropStr, DBName: string(yyDollar[4].bytes)}
 		}
-	case 233:
+	case 243:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1349
+		//line sql.y:1398
 		{
 			yyVAL.statement = &DBDDL{Action: DropStr, DBName: string(yyDollar[4].bytes)}
 		}
-	case 234:
+	case 244:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1355
+		//line sql.y:1404
 		{
 			yyVAL.statement = &DDL{Action: TruncateStr, Table: yyDollar[3].tableName}
 		}
-	case 235:
+	case 245:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1359
+		//line sql.y:1408
 		{
 			yyVAL.statement = &DDL{Action: TruncateStr, Table: yyDollar[2].tableName}
 		}
-	case 236:
+	case 246:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1364
+		//line sql.y:1413
 		{
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[3].tableName, NewName: yyDollar[3].tableName}
 		}
-	case 237:
+	case 247:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1370
+		//line sql.y:1419
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 238:
+	case 248:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1374
+		//line sql.y:1423
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 239:
+	case 249:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1378
+		//line sql.y:1427
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 240:
+	case 250:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1383
+		//line sql.y:1432
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 241:
+	case 251:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1387
+		//line sql.y:1436
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 242:
+	case 252:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1391
+		//line sql.y:1440
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 243:
+	case 253:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1395
+		//line sql.y:1444
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 244:
+	case 254:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1399
+		//line sql.y:1448
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 245:
+	case 255:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1403
+		//line sql.y:1452
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 246:
+	case 256:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1407
+		//line sql.y:1456
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 247:
+	case 257:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1411
+		//line sql.y:1460
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 248:
+	case 258:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1415
+		//line sql.y:1464
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 249:
+	case 259:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1419
+		//line sql.y:1468
 		{
 			yyVAL.statement = &Show{Scope: yyDollar[2].str, Type: string(yyDollar[3].bytes)}
 		}
-	case 250:
+	case 260:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1423
+		//line sql.y:1472
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 251:
+	case 261:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:1427
+		//line sql.y:1476
 		{
 			showTablesOpt := &ShowTablesOpt{Full: yyDollar[2].str, DbName: yyDollar[6].str, Filter: yyDollar[7].showFilter}
 			yyVAL.statement = &Show{Type: string(yyDollar[3].bytes), ShowTablesOpt: showTablesOpt, OnTable: yyDollar[5].tableName}
 		}
-	case 252:
+	case 262:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1432
+		//line sql.y:1481
 		{
 			// this is ugly, but I couldn't find a better way for now
 			if yyDollar[3].str == "processlist" {
@@ -4196,616 +4268,616 @@ yydefault:
 				yyVAL.statement = &Show{Type: yyDollar[3].str, ShowTablesOpt: showTablesOpt}
 			}
 		}
-	case 253:
+	case 263:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1442
+		//line sql.y:1491
 		{
 			yyVAL.statement = &Show{Scope: yyDollar[2].str, Type: string(yyDollar[3].bytes)}
 		}
-	case 254:
+	case 264:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1446
+		//line sql.y:1495
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 255:
+	case 265:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1450
+		//line sql.y:1499
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 256:
+	case 266:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1454
+		//line sql.y:1503
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes), ShowCollationFilterOpt: &yyDollar[4].expr}
 		}
-	case 257:
+	case 267:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1458
+		//line sql.y:1507
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes), OnTable: yyDollar[4].tableName}
 		}
-	case 258:
+	case 268:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1462
+		//line sql.y:1511
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 259:
+	case 269:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1466
+		//line sql.y:1515
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 260:
+	case 270:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1470
+		//line sql.y:1519
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 261:
+	case 271:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1474
+		//line sql.y:1523
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 262:
+	case 272:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1478
+		//line sql.y:1527
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 263:
+	case 273:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1488
+		//line sql.y:1537
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 264:
+	case 274:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1494
+		//line sql.y:1543
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 265:
+	case 275:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1498
+		//line sql.y:1547
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 266:
+	case 276:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1504
+		//line sql.y:1553
 		{
 			yyVAL.str = ""
 		}
-	case 267:
+	case 277:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1508
+		//line sql.y:1557
 		{
 			yyVAL.str = "full "
 		}
-	case 268:
+	case 278:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1514
+		//line sql.y:1563
 		{
 			yyVAL.str = ""
 		}
-	case 269:
+	case 279:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1518
+		//line sql.y:1567
 		{
 			yyVAL.str = yyDollar[2].tableIdent.v
 		}
-	case 270:
+	case 280:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1522
+		//line sql.y:1571
 		{
 			yyVAL.str = yyDollar[2].tableIdent.v
 		}
-	case 271:
+	case 281:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1528
+		//line sql.y:1577
 		{
 			yyVAL.showFilter = nil
 		}
-	case 272:
+	case 282:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1532
+		//line sql.y:1581
 		{
 			yyVAL.showFilter = &ShowFilter{Like: string(yyDollar[2].bytes)}
 		}
-	case 273:
+	case 283:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1536
+		//line sql.y:1585
 		{
 			yyVAL.showFilter = &ShowFilter{Filter: yyDollar[2].expr}
 		}
-	case 274:
+	case 284:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1542
+		//line sql.y:1591
 		{
 			yyVAL.str = ""
 		}
-	case 275:
+	case 285:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1546
+		//line sql.y:1595
 		{
 			yyVAL.str = SessionStr
 		}
-	case 276:
+	case 286:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1550
+		//line sql.y:1599
 		{
 			yyVAL.str = GlobalStr
 		}
-	case 277:
+	case 287:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1556
+		//line sql.y:1605
 		{
 			yyVAL.statement = &Use{DBName: yyDollar[2].tableIdent}
 		}
-	case 278:
+	case 288:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1560
+		//line sql.y:1609
 		{
 			yyVAL.statement = &Use{DBName: TableIdent{v: ""}}
 		}
-	case 279:
+	case 289:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1566
+		//line sql.y:1615
 		{
 			yyVAL.statement = &Begin{}
 		}
-	case 280:
+	case 290:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1570
+		//line sql.y:1619
 		{
 			yyVAL.statement = &Begin{}
 		}
-	case 281:
+	case 291:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1576
+		//line sql.y:1625
 		{
 			yyVAL.statement = &Commit{}
 		}
-	case 282:
+	case 292:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1582
+		//line sql.y:1631
 		{
 			yyVAL.statement = &Rollback{}
 		}
-	case 283:
+	case 293:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1588
+		//line sql.y:1637
 		{
 			yyVAL.statement = &OtherRead{}
 		}
-	case 284:
+	case 294:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1592
+		//line sql.y:1641
 		{
 			yyVAL.statement = &OtherRead{}
 		}
-	case 285:
+	case 295:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1596
+		//line sql.y:1645
 		{
 			yyVAL.statement = &OtherRead{}
 		}
-	case 286:
+	case 296:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1600
+		//line sql.y:1649
 		{
 			yyVAL.statement = &OtherAdmin{}
 		}
-	case 287:
+	case 297:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1604
+		//line sql.y:1653
 		{
 			yyVAL.statement = &OtherAdmin{}
 		}
-	case 288:
+	case 298:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1608
+		//line sql.y:1657
 		{
 			yyVAL.statement = &OtherAdmin{}
 		}
-	case 289:
+	case 299:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1612
+		//line sql.y:1661
 		{
 			yyVAL.statement = &OtherAdmin{}
 		}
-	case 290:
+	case 300:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1617
+		//line sql.y:1666
 		{
 			setAllowComments(yylex, true)
 		}
-	case 291:
+	case 301:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1621
+		//line sql.y:1670
 		{
 			yyVAL.bytes2 = yyDollar[2].bytes2
 			setAllowComments(yylex, false)
 		}
-	case 292:
+	case 302:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1627
+		//line sql.y:1676
 		{
 			yyVAL.bytes2 = nil
 		}
-	case 293:
+	case 303:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1631
+		//line sql.y:1680
 		{
 			yyVAL.bytes2 = append(yyDollar[1].bytes2, yyDollar[2].bytes)
 		}
-	case 294:
+	case 304:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1637
+		//line sql.y:1686
 		{
 			yyVAL.str = UnionStr
 		}
-	case 295:
+	case 305:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1641
+		//line sql.y:1690
 		{
 			yyVAL.str = UnionAllStr
 		}
-	case 296:
+	case 306:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1645
+		//line sql.y:1694
 		{
 			yyVAL.str = UnionDistinctStr
 		}
-	case 297:
+	case 307:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1650
+		//line sql.y:1699
 		{
 			yyVAL.str = ""
 		}
-	case 298:
+	case 308:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1654
+		//line sql.y:1703
 		{
 			yyVAL.str = SQLNoCacheStr
 		}
-	case 299:
+	case 309:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1658
+		//line sql.y:1707
 		{
 			yyVAL.str = SQLCacheStr
 		}
-	case 300:
+	case 310:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1663
+		//line sql.y:1712
 		{
 			yyVAL.str = ""
 		}
-	case 301:
+	case 311:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1667
+		//line sql.y:1716
 		{
 			yyVAL.str = DistinctStr
 		}
-	case 302:
+	case 312:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1672
+		//line sql.y:1721
 		{
 			yyVAL.str = ""
 		}
-	case 303:
+	case 313:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1676
+		//line sql.y:1725
 		{
 			yyVAL.str = StraightJoinHint
 		}
-	case 304:
+	case 314:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1681
+		//line sql.y:1730
 		{
 			yyVAL.selectExprs = nil
 		}
-	case 305:
+	case 315:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1685
+		//line sql.y:1734
 		{
 			yyVAL.selectExprs = yyDollar[1].selectExprs
 		}
-	case 306:
+	case 316:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1691
+		//line sql.y:1740
 		{
 			yyVAL.selectExprs = SelectExprs{yyDollar[1].selectExpr}
 		}
-	case 307:
+	case 317:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1695
+		//line sql.y:1744
 		{
 			yyVAL.selectExprs = append(yyVAL.selectExprs, yyDollar[3].selectExpr)
 		}
-	case 308:
+	case 318:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1701
+		//line sql.y:1750
 		{
 			yyVAL.selectExpr = &StarExpr{}
 		}
-	case 309:
+	case 319:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1705
+		//line sql.y:1754
 		{
 			yyVAL.selectExpr = &AliasedExpr{Expr: yyDollar[1].expr, As: yyDollar[2].colIdent}
 		}
-	case 310:
+	case 320:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1709
+		//line sql.y:1758
 		{
 			yyVAL.selectExpr = &StarExpr{TableName: TableName{Name: yyDollar[1].tableIdent}}
 		}
-	case 311:
+	case 321:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1713
+		//line sql.y:1762
 		{
 			yyVAL.selectExpr = &StarExpr{TableName: TableName{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].tableIdent}}
 		}
-	case 312:
+	case 322:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1718
+		//line sql.y:1767
 		{
 			yyVAL.colIdent = ColIdent{}
 		}
-	case 313:
+	case 323:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1722
+		//line sql.y:1771
 		{
 			yyVAL.colIdent = yyDollar[1].colIdent
 		}
-	case 314:
+	case 324:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1726
+		//line sql.y:1775
 		{
 			yyVAL.colIdent = yyDollar[2].colIdent
 		}
-	case 316:
+	case 326:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1733
+		//line sql.y:1782
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 317:
+	case 327:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1738
+		//line sql.y:1787
 		{
 			yyVAL.tableExprs = TableExprs{&AliasedTableExpr{Expr: TableName{Name: NewTableIdent("dual")}}}
 		}
-	case 318:
+	case 328:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1742
+		//line sql.y:1791
 		{
 			yyVAL.tableExprs = yyDollar[2].tableExprs
 		}
-	case 319:
+	case 329:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1748
+		//line sql.y:1797
 		{
 			yyVAL.tableExprs = TableExprs{yyDollar[1].tableExpr}
 		}
-	case 320:
+	case 330:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1752
+		//line sql.y:1801
 		{
 			yyVAL.tableExprs = append(yyVAL.tableExprs, yyDollar[3].tableExpr)
 		}
-	case 323:
+	case 333:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1762
+		//line sql.y:1811
 		{
 			yyVAL.tableExpr = yyDollar[1].aliasedTableName
 		}
-	case 324:
+	case 334:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1766
+		//line sql.y:1815
 		{
 			yyVAL.tableExpr = &AliasedTableExpr{Expr: yyDollar[1].subquery, As: yyDollar[3].tableIdent}
 		}
-	case 325:
+	case 335:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1770
+		//line sql.y:1819
 		{
 			yyVAL.tableExpr = &ParenTableExpr{Exprs: yyDollar[2].tableExprs}
 		}
-	case 326:
+	case 336:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1776
+		//line sql.y:1825
 		{
 			yyVAL.aliasedTableName = &AliasedTableExpr{Expr: yyDollar[1].tableName, As: yyDollar[2].tableIdent, Hints: yyDollar[3].indexHints}
 		}
-	case 327:
+	case 337:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:1780
+		//line sql.y:1829
 		{
 			yyVAL.aliasedTableName = &AliasedTableExpr{Expr: yyDollar[1].tableName, Partitions: yyDollar[4].partitions, As: yyDollar[6].tableIdent, Hints: yyDollar[7].indexHints}
 		}
-	case 328:
+	case 338:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1786
+		//line sql.y:1835
 		{
 			yyVAL.columns = Columns{yyDollar[1].colIdent}
 		}
-	case 329:
+	case 339:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1790
+		//line sql.y:1839
 		{
 			yyVAL.columns = append(yyVAL.columns, yyDollar[3].colIdent)
 		}
-	case 330:
+	case 340:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1796
+		//line sql.y:1845
 		{
 			yyVAL.partitions = Partitions{yyDollar[1].colIdent}
 		}
-	case 331:
+	case 341:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1800
+		//line sql.y:1849
 		{
 			yyVAL.partitions = append(yyVAL.partitions, yyDollar[3].colIdent)
 		}
-	case 332:
+	case 342:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1813
+		//line sql.y:1862
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr, Condition: yyDollar[4].joinCondition}
 		}
-	case 333:
+	case 343:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1817
+		//line sql.y:1866
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr, Condition: yyDollar[4].joinCondition}
 		}
-	case 334:
+	case 344:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1821
+		//line sql.y:1870
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr, Condition: yyDollar[4].joinCondition}
 		}
-	case 335:
+	case 345:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1825
+		//line sql.y:1874
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr}
 		}
-	case 336:
+	case 346:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1831
+		//line sql.y:1880
 		{
 			yyVAL.joinCondition = JoinCondition{On: yyDollar[2].expr}
 		}
-	case 337:
+	case 347:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1833
+		//line sql.y:1882
 		{
 			yyVAL.joinCondition = JoinCondition{Using: yyDollar[3].columns}
 		}
-	case 338:
+	case 348:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1837
+		//line sql.y:1886
 		{
 			yyVAL.joinCondition = JoinCondition{}
 		}
-	case 339:
+	case 349:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1839
+		//line sql.y:1888
 		{
 			yyVAL.joinCondition = yyDollar[1].joinCondition
 		}
-	case 340:
+	case 350:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1843
+		//line sql.y:1892
 		{
 			yyVAL.joinCondition = JoinCondition{}
 		}
-	case 341:
+	case 351:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1845
+		//line sql.y:1894
 		{
 			yyVAL.joinCondition = JoinCondition{On: yyDollar[2].expr}
 		}
-	case 342:
+	case 352:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1848
+		//line sql.y:1897
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 343:
+	case 353:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1850
+		//line sql.y:1899
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 344:
+	case 354:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1853
+		//line sql.y:1902
 		{
 			yyVAL.tableIdent = NewTableIdent("")
 		}
-	case 345:
+	case 355:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1857
+		//line sql.y:1906
 		{
 			yyVAL.tableIdent = yyDollar[1].tableIdent
 		}
-	case 346:
+	case 356:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1861
+		//line sql.y:1910
 		{
 			yyVAL.tableIdent = yyDollar[2].tableIdent
 		}
-	case 348:
+	case 358:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1868
+		//line sql.y:1917
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 349:
+	case 359:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1874
+		//line sql.y:1923
 		{
 			yyVAL.str = JoinStr
 		}
-	case 350:
+	case 360:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1878
+		//line sql.y:1927
 		{
 			yyVAL.str = JoinStr
 		}
-	case 351:
+	case 361:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1882
+		//line sql.y:1931
 		{
 			yyVAL.str = JoinStr
 		}
-	case 352:
+	case 362:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1888
+		//line sql.y:1937
 		{
 			yyVAL.str = StraightJoinStr
 		}
-	case 353:
+	case 363:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1894
+		//line sql.y:1943
 		{
 			yyVAL.str = LeftJoinStr
 		}
-	case 354:
+	case 364:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1898
+		//line sql.y:1947
 		{
 			yyVAL.str = LeftJoinStr
 		}
-	case 355:
+	case 365:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1902
+		//line sql.y:1951
 		{
 			yyVAL.str = RightJoinStr
 		}
-	case 356:
+	case 366:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1906
+		//line sql.y:1955
 		{
 			yyVAL.str = RightJoinStr
 		}
-	case 357:
+	case 367:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1912
+		//line sql.y:1961
 		{
 			yyVAL.str = NaturalJoinStr
 		}
-	case 358:
+	case 368:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1916
+		//line sql.y:1965
 		{
 			if yyDollar[2].str == LeftJoinStr {
 				yyVAL.str = NaturalLeftJoinStr
@@ -4813,459 +4885,459 @@ yydefault:
 				yyVAL.str = NaturalRightJoinStr
 			}
 		}
-	case 359:
+	case 369:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1926
+		//line sql.y:1975
 		{
 			yyVAL.tableName = yyDollar[2].tableName
 		}
-	case 360:
+	case 370:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1930
+		//line sql.y:1979
 		{
 			yyVAL.tableName = yyDollar[1].tableName
 		}
-	case 361:
+	case 371:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1936
+		//line sql.y:1985
 		{
 			yyVAL.tableName = TableName{Name: yyDollar[1].tableIdent}
 		}
-	case 362:
+	case 372:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1940
+		//line sql.y:1989
 		{
 			yyVAL.tableName = TableName{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].tableIdent}
 		}
-	case 363:
+	case 373:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1945
+		//line sql.y:1994
 		{
 			yyVAL.indexHints = nil
 		}
-	case 364:
+	case 374:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1949
+		//line sql.y:1998
 		{
 			yyVAL.indexHints = &IndexHints{Type: UseStr, Indexes: yyDollar[4].columns}
 		}
-	case 365:
+	case 375:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1953
+		//line sql.y:2002
 		{
 			yyVAL.indexHints = &IndexHints{Type: IgnoreStr, Indexes: yyDollar[4].columns}
 		}
-	case 366:
+	case 376:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1957
+		//line sql.y:2006
 		{
 			yyVAL.indexHints = &IndexHints{Type: ForceStr, Indexes: yyDollar[4].columns}
 		}
-	case 367:
+	case 377:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1962
+		//line sql.y:2011
 		{
 			yyVAL.expr = nil
 		}
-	case 368:
+	case 378:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1966
+		//line sql.y:2015
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 369:
+	case 379:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1972
+		//line sql.y:2021
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 370:
+	case 380:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1976
+		//line sql.y:2025
 		{
 			yyVAL.expr = &AndExpr{Left: yyDollar[1].expr, Right: yyDollar[3].expr}
 		}
-	case 371:
+	case 381:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1980
+		//line sql.y:2029
 		{
 			yyVAL.expr = &OrExpr{Left: yyDollar[1].expr, Right: yyDollar[3].expr}
 		}
-	case 372:
+	case 382:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1984
+		//line sql.y:2033
 		{
 			yyVAL.expr = &NotExpr{Expr: yyDollar[2].expr}
 		}
-	case 373:
+	case 383:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1988
+		//line sql.y:2037
 		{
 			yyVAL.expr = &IsExpr{Operator: yyDollar[3].str, Expr: yyDollar[1].expr}
 		}
-	case 374:
+	case 384:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1992
+		//line sql.y:2041
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 375:
+	case 385:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1996
+		//line sql.y:2045
 		{
 			yyVAL.expr = &Default{ColName: yyDollar[2].str}
 		}
-	case 376:
+	case 386:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2002
+		//line sql.y:2051
 		{
 			yyVAL.str = ""
 		}
-	case 377:
+	case 387:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2006
+		//line sql.y:2055
 		{
 			yyVAL.str = string(yyDollar[2].bytes)
 		}
-	case 378:
+	case 388:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2012
+		//line sql.y:2061
 		{
 			yyVAL.boolVal = BoolVal(true)
 		}
-	case 379:
+	case 389:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2016
+		//line sql.y:2065
 		{
 			yyVAL.boolVal = BoolVal(false)
 		}
-	case 380:
+	case 390:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2022
+		//line sql.y:2071
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: yyDollar[2].str, Right: yyDollar[3].expr}
 		}
-	case 381:
+	case 391:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2026
+		//line sql.y:2075
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: InStr, Right: yyDollar[3].colTuple}
 		}
-	case 382:
+	case 392:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2030
+		//line sql.y:2079
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: NotInStr, Right: yyDollar[4].colTuple}
 		}
-	case 383:
+	case 393:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2034
+		//line sql.y:2083
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: LikeStr, Right: yyDollar[3].expr, Escape: yyDollar[4].expr}
 		}
-	case 384:
+	case 394:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:2038
+		//line sql.y:2087
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: NotLikeStr, Right: yyDollar[4].expr, Escape: yyDollar[5].expr}
 		}
-	case 385:
+	case 395:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2042
+		//line sql.y:2091
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: RegexpStr, Right: yyDollar[3].expr}
 		}
-	case 386:
+	case 396:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2046
+		//line sql.y:2095
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: NotRegexpStr, Right: yyDollar[4].expr}
 		}
-	case 387:
+	case 397:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:2050
+		//line sql.y:2099
 		{
 			yyVAL.expr = &RangeCond{Left: yyDollar[1].expr, Operator: BetweenStr, From: yyDollar[3].expr, To: yyDollar[5].expr}
 		}
-	case 388:
+	case 398:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:2054
+		//line sql.y:2103
 		{
 			yyVAL.expr = &RangeCond{Left: yyDollar[1].expr, Operator: NotBetweenStr, From: yyDollar[4].expr, To: yyDollar[6].expr}
 		}
-	case 389:
+	case 399:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2058
+		//line sql.y:2107
 		{
 			yyVAL.expr = &ExistsExpr{Subquery: yyDollar[2].subquery}
 		}
-	case 390:
+	case 400:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2064
+		//line sql.y:2113
 		{
 			yyVAL.str = IsNullStr
 		}
-	case 391:
+	case 401:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2068
+		//line sql.y:2117
 		{
 			yyVAL.str = IsNotNullStr
 		}
-	case 392:
+	case 402:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2072
+		//line sql.y:2121
 		{
 			yyVAL.str = IsTrueStr
 		}
-	case 393:
+	case 403:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2076
+		//line sql.y:2125
 		{
 			yyVAL.str = IsNotTrueStr
 		}
-	case 394:
+	case 404:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2080
+		//line sql.y:2129
 		{
 			yyVAL.str = IsFalseStr
 		}
-	case 395:
+	case 405:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2084
+		//line sql.y:2133
 		{
 			yyVAL.str = IsNotFalseStr
 		}
-	case 396:
+	case 406:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2090
+		//line sql.y:2139
 		{
 			yyVAL.str = EqualStr
 		}
-	case 397:
+	case 407:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2094
+		//line sql.y:2143
 		{
 			yyVAL.str = LessThanStr
 		}
-	case 398:
+	case 408:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2098
+		//line sql.y:2147
 		{
 			yyVAL.str = GreaterThanStr
 		}
-	case 399:
+	case 409:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2102
+		//line sql.y:2151
 		{
 			yyVAL.str = LessEqualStr
 		}
-	case 400:
+	case 410:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2106
+		//line sql.y:2155
 		{
 			yyVAL.str = GreaterEqualStr
 		}
-	case 401:
+	case 411:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2110
+		//line sql.y:2159
 		{
 			yyVAL.str = NotEqualStr
 		}
-	case 402:
+	case 412:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2114
+		//line sql.y:2163
 		{
 			yyVAL.str = NullSafeEqualStr
 		}
-	case 403:
+	case 413:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2119
+		//line sql.y:2168
 		{
 			yyVAL.expr = nil
 		}
-	case 404:
+	case 414:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2123
+		//line sql.y:2172
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 405:
+	case 415:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2129
+		//line sql.y:2178
 		{
 			yyVAL.colTuple = yyDollar[1].valTuple
 		}
-	case 406:
+	case 416:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2133
+		//line sql.y:2182
 		{
 			yyVAL.colTuple = yyDollar[1].subquery
 		}
-	case 407:
+	case 417:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2137
+		//line sql.y:2186
 		{
 			yyVAL.colTuple = ListArg(yyDollar[1].bytes)
 		}
-	case 408:
+	case 418:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2143
+		//line sql.y:2192
 		{
 			yyVAL.subquery = &Subquery{yyDollar[2].selStmt}
 		}
-	case 409:
+	case 419:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2149
+		//line sql.y:2198
 		{
 			yyVAL.exprs = Exprs{yyDollar[1].expr}
 		}
-	case 410:
+	case 420:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2153
+		//line sql.y:2202
 		{
 			yyVAL.exprs = append(yyDollar[1].exprs, yyDollar[3].expr)
 		}
-	case 411:
+	case 421:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2159
+		//line sql.y:2208
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 412:
+	case 422:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2163
+		//line sql.y:2212
 		{
 			yyVAL.expr = yyDollar[1].boolVal
 		}
-	case 413:
+	case 423:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2167
+		//line sql.y:2216
 		{
 			yyVAL.expr = yyDollar[1].colName
 		}
-	case 414:
+	case 424:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2171
+		//line sql.y:2220
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 415:
+	case 425:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2175
+		//line sql.y:2224
 		{
 			yyVAL.expr = yyDollar[1].subquery
 		}
-	case 416:
+	case 426:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2179
+		//line sql.y:2228
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: BitAndStr, Right: yyDollar[3].expr}
 		}
-	case 417:
+	case 427:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2183
+		//line sql.y:2232
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: BitOrStr, Right: yyDollar[3].expr}
 		}
-	case 418:
+	case 428:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2187
+		//line sql.y:2236
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: BitXorStr, Right: yyDollar[3].expr}
 		}
-	case 419:
+	case 429:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2191
+		//line sql.y:2240
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: PlusStr, Right: yyDollar[3].expr}
 		}
-	case 420:
+	case 430:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2195
+		//line sql.y:2244
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: MinusStr, Right: yyDollar[3].expr}
 		}
-	case 421:
+	case 431:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2199
+		//line sql.y:2248
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: MultStr, Right: yyDollar[3].expr}
 		}
-	case 422:
+	case 432:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2203
+		//line sql.y:2252
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: DivStr, Right: yyDollar[3].expr}
 		}
-	case 423:
+	case 433:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2207
+		//line sql.y:2256
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: IntDivStr, Right: yyDollar[3].expr}
 		}
-	case 424:
+	case 434:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2211
+		//line sql.y:2260
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ModStr, Right: yyDollar[3].expr}
 		}
-	case 425:
+	case 435:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2215
+		//line sql.y:2264
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ModStr, Right: yyDollar[3].expr}
 		}
-	case 426:
+	case 436:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2219
+		//line sql.y:2268
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ShiftLeftStr, Right: yyDollar[3].expr}
 		}
-	case 427:
+	case 437:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2223
+		//line sql.y:2272
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ShiftRightStr, Right: yyDollar[3].expr}
 		}
-	case 428:
+	case 438:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2227
+		//line sql.y:2276
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].colName, Operator: JSONExtractOp, Right: yyDollar[3].expr}
 		}
-	case 429:
+	case 439:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2231
+		//line sql.y:2280
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].colName, Operator: JSONUnquoteExtractOp, Right: yyDollar[3].expr}
 		}
-	case 430:
+	case 440:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2235
+		//line sql.y:2284
 		{
 			yyVAL.expr = &CollateExpr{Expr: yyDollar[1].expr, Charset: yyDollar[3].str}
 		}
-	case 431:
+	case 441:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2239
+		//line sql.y:2288
 		{
 			yyVAL.expr = &UnaryExpr{Operator: BinaryStr, Expr: yyDollar[2].expr}
 		}
-	case 432:
+	case 442:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2243
+		//line sql.y:2292
 		{
 			yyVAL.expr = &UnaryExpr{Operator: UBinaryStr, Expr: yyDollar[2].expr}
 		}
-	case 433:
+	case 443:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2247
+		//line sql.y:2296
 		{
 			yyVAL.expr = &UnaryExpr{Operator: Utf8mb4Str, Expr: yyDollar[2].expr}
 		}
-	case 434:
+	case 444:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2251
+		//line sql.y:2300
 		{
 			if num, ok := yyDollar[2].expr.(*SQLVal); ok && num.Type == IntVal {
 				yyVAL.expr = num
@@ -5273,9 +5345,9 @@ yydefault:
 				yyVAL.expr = &UnaryExpr{Operator: UPlusStr, Expr: yyDollar[2].expr}
 			}
 		}
-	case 435:
+	case 445:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2259
+		//line sql.y:2308
 		{
 			if num, ok := yyDollar[2].expr.(*SQLVal); ok && num.Type == IntVal {
 				// Handle double negative
@@ -5289,21 +5361,21 @@ yydefault:
 				yyVAL.expr = &UnaryExpr{Operator: UMinusStr, Expr: yyDollar[2].expr}
 			}
 		}
-	case 436:
+	case 446:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2273
+		//line sql.y:2322
 		{
 			yyVAL.expr = &UnaryExpr{Operator: TildaStr, Expr: yyDollar[2].expr}
 		}
-	case 437:
+	case 447:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2277
+		//line sql.y:2326
 		{
 			yyVAL.expr = &UnaryExpr{Operator: BangStr, Expr: yyDollar[2].expr}
 		}
-	case 438:
+	case 448:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2281
+		//line sql.y:2330
 		{
 			// This rule prevents the usage of INTERVAL
 			// as a function. If support is needed for that,
@@ -5311,431 +5383,431 @@ yydefault:
 			// will be non-trivial because of grammar conflicts.
 			yyVAL.expr = &IntervalExpr{Expr: yyDollar[2].expr, Unit: yyDollar[3].colIdent.String()}
 		}
-	case 443:
+	case 453:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2299
+		//line sql.y:2348
 		{
 			yyVAL.expr = &FuncExpr{Name: yyDollar[1].colIdent, Exprs: yyDollar[3].selectExprs}
 		}
-	case 444:
+	case 454:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:2303
+		//line sql.y:2352
 		{
 			yyVAL.expr = &FuncExpr{Name: yyDollar[1].colIdent, Distinct: true, Exprs: yyDollar[4].selectExprs}
 		}
-	case 445:
+	case 455:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:2307
+		//line sql.y:2356
 		{
 			yyVAL.expr = &FuncExpr{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].colIdent, Exprs: yyDollar[5].selectExprs}
 		}
-	case 446:
+	case 456:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2317
+		//line sql.y:2366
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("left"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 447:
+	case 457:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2321
+		//line sql.y:2370
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("right"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 448:
+	case 458:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:2325
+		//line sql.y:2374
 		{
 			yyVAL.expr = &ConvertExpr{Expr: yyDollar[3].expr, Type: yyDollar[5].convertType}
 		}
-	case 449:
+	case 459:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:2329
+		//line sql.y:2378
 		{
 			yyVAL.expr = &ConvertExpr{Expr: yyDollar[3].expr, Type: yyDollar[5].convertType}
 		}
-	case 450:
+	case 460:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:2333
+		//line sql.y:2382
 		{
 			yyVAL.expr = &ConvertUsingExpr{Expr: yyDollar[3].expr, Type: yyDollar[5].str}
 		}
-	case 451:
+	case 461:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:2337
+		//line sql.y:2386
 		{
 			yyVAL.expr = &SubstrExpr{Name: yyDollar[3].colName, From: yyDollar[5].expr, To: nil}
 		}
-	case 452:
+	case 462:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:2341
+		//line sql.y:2390
 		{
 			yyVAL.expr = &SubstrExpr{Name: yyDollar[3].colName, From: yyDollar[5].expr, To: yyDollar[7].expr}
 		}
-	case 453:
+	case 463:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:2345
+		//line sql.y:2394
 		{
 			yyVAL.expr = &SubstrExpr{Name: yyDollar[3].colName, From: yyDollar[5].expr, To: yyDollar[7].expr}
 		}
-	case 454:
+	case 464:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:2349
+		//line sql.y:2398
 		{
 			yyVAL.expr = &SubstrExpr{Name: yyDollar[3].colName, From: yyDollar[5].expr, To: nil}
 		}
-	case 455:
+	case 465:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:2353
+		//line sql.y:2402
 		{
 			yyVAL.expr = &SubstrExpr{Name: yyDollar[3].colName, From: yyDollar[5].expr, To: yyDollar[7].expr}
 		}
-	case 456:
+	case 466:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:2357
+		//line sql.y:2406
 		{
 			yyVAL.expr = &SubstrExpr{Name: yyDollar[3].colName, From: yyDollar[5].expr, To: yyDollar[7].expr}
 		}
-	case 457:
+	case 467:
 		yyDollar = yyS[yypt-9 : yypt+1]
-		//line sql.y:2361
+		//line sql.y:2410
 		{
 			yyVAL.expr = &MatchExpr{Columns: yyDollar[3].selectExprs, Expr: yyDollar[7].expr, Option: yyDollar[8].str}
 		}
-	case 458:
+	case 468:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:2365
+		//line sql.y:2414
 		{
 			yyVAL.expr = &GroupConcatExpr{Distinct: yyDollar[3].str, Exprs: yyDollar[4].selectExprs, OrderBy: yyDollar[5].orderBy, Separator: yyDollar[6].str}
 		}
-	case 459:
+	case 469:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:2369
+		//line sql.y:2418
 		{
 			yyVAL.expr = &CaseExpr{Expr: yyDollar[2].expr, Whens: yyDollar[3].whens, Else: yyDollar[4].expr}
 		}
-	case 460:
+	case 470:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2373
+		//line sql.y:2422
 		{
 			yyVAL.expr = &ValuesFuncExpr{Name: yyDollar[3].colName}
 		}
-	case 461:
+	case 471:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2383
+		//line sql.y:2432
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("current_timestamp")}
 		}
-	case 462:
+	case 472:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2387
+		//line sql.y:2436
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("utc_timestamp")}
 		}
-	case 463:
+	case 473:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2391
+		//line sql.y:2440
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("utc_time")}
 		}
-	case 464:
+	case 474:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2395
+		//line sql.y:2444
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("utc_date")}
 		}
-	case 465:
+	case 475:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2400
+		//line sql.y:2449
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("localtime")}
 		}
-	case 466:
+	case 476:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2405
+		//line sql.y:2454
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("localtimestamp")}
 		}
-	case 467:
+	case 477:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2410
+		//line sql.y:2459
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("current_date")}
 		}
-	case 468:
+	case 478:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2415
+		//line sql.y:2464
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("current_time")}
 		}
-	case 471:
+	case 481:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2429
+		//line sql.y:2478
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("if"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 472:
+	case 482:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2433
+		//line sql.y:2482
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("database"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 473:
+	case 483:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2437
+		//line sql.y:2486
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("mod"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 474:
+	case 484:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2441
+		//line sql.y:2490
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("replace"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 475:
+	case 485:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2447
+		//line sql.y:2496
 		{
 			yyVAL.str = ""
 		}
-	case 476:
+	case 486:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2451
+		//line sql.y:2500
 		{
 			yyVAL.str = BooleanModeStr
 		}
-	case 477:
+	case 487:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2455
+		//line sql.y:2504
 		{
 			yyVAL.str = NaturalLanguageModeStr
 		}
-	case 478:
+	case 488:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:2459
+		//line sql.y:2508
 		{
 			yyVAL.str = NaturalLanguageModeWithQueryExpansionStr
 		}
-	case 479:
+	case 489:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2463
+		//line sql.y:2512
 		{
 			yyVAL.str = QueryExpansionStr
 		}
-	case 480:
+	case 490:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2469
+		//line sql.y:2518
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 481:
+	case 491:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2473
+		//line sql.y:2522
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 482:
+	case 492:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2479
+		//line sql.y:2528
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 483:
+	case 493:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2483
+		//line sql.y:2532
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal, Charset: yyDollar[3].str, Operator: CharacterSetStr}
 		}
-	case 484:
+	case 494:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2487
+		//line sql.y:2536
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal, Charset: string(yyDollar[3].bytes)}
 		}
-	case 485:
+	case 495:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2491
+		//line sql.y:2540
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 486:
+	case 496:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2495
+		//line sql.y:2544
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 487:
+	case 497:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2499
+		//line sql.y:2548
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 			yyVAL.convertType.Length = yyDollar[2].LengthScaleOption.Length
 			yyVAL.convertType.Scale = yyDollar[2].LengthScaleOption.Scale
 		}
-	case 488:
+	case 498:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2505
+		//line sql.y:2554
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 489:
+	case 499:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2509
+		//line sql.y:2558
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 490:
+	case 500:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2513
+		//line sql.y:2562
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 491:
+	case 501:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2517
+		//line sql.y:2566
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 492:
+	case 502:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2521
+		//line sql.y:2570
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 493:
+	case 503:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2525
+		//line sql.y:2574
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 494:
+	case 504:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2529
+		//line sql.y:2578
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 495:
+	case 505:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2534
+		//line sql.y:2583
 		{
 			yyVAL.expr = nil
 		}
-	case 496:
+	case 506:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2538
+		//line sql.y:2587
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 497:
+	case 507:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2543
+		//line sql.y:2592
 		{
 			yyVAL.str = string("")
 		}
-	case 498:
+	case 508:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2547
+		//line sql.y:2596
 		{
 			yyVAL.str = " separator '" + string(yyDollar[2].bytes) + "'"
 		}
-	case 499:
+	case 509:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2553
+		//line sql.y:2602
 		{
 			yyVAL.whens = []*When{yyDollar[1].when}
 		}
-	case 500:
+	case 510:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2557
+		//line sql.y:2606
 		{
 			yyVAL.whens = append(yyDollar[1].whens, yyDollar[2].when)
 		}
-	case 501:
+	case 511:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2563
+		//line sql.y:2612
 		{
 			yyVAL.when = &When{Cond: yyDollar[2].expr, Val: yyDollar[4].expr}
 		}
-	case 502:
+	case 512:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2568
+		//line sql.y:2617
 		{
 			yyVAL.expr = nil
 		}
-	case 503:
+	case 513:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2572
+		//line sql.y:2621
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 504:
+	case 514:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2578
+		//line sql.y:2627
 		{
 			yyVAL.colName = &ColName{Name: yyDollar[1].colIdent}
 		}
-	case 505:
+	case 515:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2582
+		//line sql.y:2631
 		{
 			yyVAL.colName = &ColName{Qualifier: TableName{Name: yyDollar[1].tableIdent}, Name: yyDollar[3].colIdent}
 		}
-	case 506:
+	case 516:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:2586
+		//line sql.y:2635
 		{
 			yyVAL.colName = &ColName{Qualifier: TableName{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].tableIdent}, Name: yyDollar[5].colIdent}
 		}
-	case 507:
+	case 517:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2592
+		//line sql.y:2641
 		{
 			yyVAL.expr = NewStrVal(yyDollar[1].bytes)
 		}
-	case 508:
+	case 518:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2596
+		//line sql.y:2645
 		{
 			yyVAL.expr = NewHexVal(yyDollar[1].bytes)
 		}
-	case 509:
+	case 519:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2600
+		//line sql.y:2649
 		{
 			yyVAL.expr = NewBitVal(yyDollar[1].bytes)
 		}
-	case 510:
+	case 520:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2604
+		//line sql.y:2653
 		{
 			yyVAL.expr = NewIntVal(yyDollar[1].bytes)
 		}
-	case 511:
+	case 521:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2608
+		//line sql.y:2657
 		{
 			yyVAL.expr = NewFloatVal(yyDollar[1].bytes)
 		}
-	case 512:
+	case 522:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2612
+		//line sql.y:2661
 		{
 			yyVAL.expr = NewHexNum(yyDollar[1].bytes)
 		}
-	case 513:
+	case 523:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2616
+		//line sql.y:2665
 		{
 			yyVAL.expr = NewValArg(yyDollar[1].bytes)
 		}
-	case 514:
+	case 524:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2620
+		//line sql.y:2669
 		{
 			yyVAL.expr = &NullVal{}
 		}
-	case 515:
+	case 525:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2626
+		//line sql.y:2675
 		{
 			// TODO(sougou): Deprecate this construct.
 			if yyDollar[1].colIdent.Lowered() != "value" {
@@ -5744,239 +5816,239 @@ yydefault:
 			}
 			yyVAL.expr = NewIntVal([]byte("1"))
 		}
-	case 516:
+	case 526:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2635
+		//line sql.y:2684
 		{
 			yyVAL.expr = NewIntVal(yyDollar[1].bytes)
 		}
-	case 517:
+	case 527:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2639
+		//line sql.y:2688
 		{
 			yyVAL.expr = NewValArg(yyDollar[1].bytes)
 		}
-	case 518:
+	case 528:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2644
+		//line sql.y:2693
 		{
 			yyVAL.exprs = nil
 		}
-	case 519:
+	case 529:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2648
+		//line sql.y:2697
 		{
 			yyVAL.exprs = yyDollar[3].exprs
 		}
-	case 520:
+	case 530:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2653
+		//line sql.y:2702
 		{
 			yyVAL.expr = nil
 		}
-	case 521:
+	case 531:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2657
+		//line sql.y:2706
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 522:
+	case 532:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2662
+		//line sql.y:2711
 		{
 			yyVAL.orderBy = nil
 		}
-	case 523:
+	case 533:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2666
+		//line sql.y:2715
 		{
 			yyVAL.orderBy = yyDollar[3].orderBy
 		}
-	case 524:
+	case 534:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2672
+		//line sql.y:2721
 		{
 			yyVAL.orderBy = OrderBy{yyDollar[1].order}
 		}
-	case 525:
+	case 535:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2676
+		//line sql.y:2725
 		{
 			yyVAL.orderBy = append(yyDollar[1].orderBy, yyDollar[3].order)
 		}
-	case 526:
+	case 536:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2682
+		//line sql.y:2731
 		{
 			yyVAL.order = &Order{Expr: yyDollar[1].expr, Direction: yyDollar[2].str}
 		}
-	case 527:
+	case 537:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2687
+		//line sql.y:2736
 		{
 			yyVAL.str = AscScr
 		}
-	case 528:
+	case 538:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2691
+		//line sql.y:2740
 		{
 			yyVAL.str = AscScr
 		}
-	case 529:
+	case 539:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2695
+		//line sql.y:2744
 		{
 			yyVAL.str = DescScr
 		}
-	case 530:
+	case 540:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2700
+		//line sql.y:2749
 		{
 			yyVAL.limit = nil
 		}
-	case 531:
+	case 541:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2704
+		//line sql.y:2753
 		{
 			yyVAL.limit = &Limit{Rowcount: yyDollar[2].expr}
 		}
-	case 532:
+	case 542:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2708
+		//line sql.y:2757
 		{
 			yyVAL.limit = &Limit{Offset: yyDollar[2].expr, Rowcount: yyDollar[4].expr}
 		}
-	case 533:
+	case 543:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2712
+		//line sql.y:2761
 		{
 			yyVAL.limit = &Limit{Offset: yyDollar[4].expr, Rowcount: yyDollar[2].expr}
 		}
-	case 534:
+	case 544:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2717
+		//line sql.y:2766
 		{
 			yyVAL.str = ""
 		}
-	case 535:
+	case 545:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2721
+		//line sql.y:2770
 		{
 			yyVAL.str = ForUpdateStr
 		}
-	case 536:
+	case 546:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2725
+		//line sql.y:2774
 		{
 			yyVAL.str = ShareModeStr
 		}
-	case 537:
+	case 547:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2738
+		//line sql.y:2787
 		{
 			yyVAL.ins = &Insert{Rows: yyDollar[2].values}
 		}
-	case 538:
+	case 548:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2742
+		//line sql.y:2791
 		{
 			yyVAL.ins = &Insert{Rows: yyDollar[1].selStmt}
 		}
-	case 539:
+	case 549:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2746
+		//line sql.y:2795
 		{
 			// Drop the redundant parenthesis.
 			yyVAL.ins = &Insert{Rows: yyDollar[2].selStmt}
 		}
-	case 540:
+	case 550:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:2751
+		//line sql.y:2800
 		{
 			yyVAL.ins = &Insert{Columns: yyDollar[2].columns, Rows: yyDollar[5].values}
 		}
-	case 541:
+	case 551:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2755
+		//line sql.y:2804
 		{
 			yyVAL.ins = &Insert{Columns: yyDollar[2].columns, Rows: yyDollar[4].selStmt}
 		}
-	case 542:
+	case 552:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:2759
+		//line sql.y:2808
 		{
 			// Drop the redundant parenthesis.
 			yyVAL.ins = &Insert{Columns: yyDollar[2].columns, Rows: yyDollar[5].selStmt}
 		}
-	case 543:
+	case 553:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2766
+		//line sql.y:2815
 		{
 			yyVAL.columns = Columns{yyDollar[1].colIdent}
 		}
-	case 544:
+	case 554:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2770
+		//line sql.y:2819
 		{
 			yyVAL.columns = Columns{yyDollar[3].colIdent}
 		}
-	case 545:
+	case 555:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2774
+		//line sql.y:2823
 		{
 			yyVAL.columns = append(yyVAL.columns, yyDollar[3].colIdent)
 		}
-	case 546:
+	case 556:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:2778
+		//line sql.y:2827
 		{
 			yyVAL.columns = append(yyVAL.columns, yyDollar[5].colIdent)
 		}
-	case 547:
+	case 557:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2783
+		//line sql.y:2832
 		{
 			yyVAL.updateExprs = nil
 		}
-	case 548:
+	case 558:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:2787
+		//line sql.y:2836
 		{
 			yyVAL.updateExprs = yyDollar[5].updateExprs
 		}
-	case 549:
+	case 559:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2793
+		//line sql.y:2842
 		{
 			yyVAL.values = Values{yyDollar[1].valTuple}
 		}
-	case 550:
+	case 560:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2797
+		//line sql.y:2846
 		{
 			yyVAL.values = append(yyDollar[1].values, yyDollar[3].valTuple)
 		}
-	case 551:
+	case 561:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2803
+		//line sql.y:2852
 		{
 			yyVAL.valTuple = yyDollar[1].valTuple
 		}
-	case 552:
+	case 562:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2807
+		//line sql.y:2856
 		{
 			yyVAL.valTuple = ValTuple{}
 		}
-	case 553:
+	case 563:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2813
+		//line sql.y:2862
 		{
 			yyVAL.valTuple = ValTuple(yyDollar[2].exprs)
 		}
-	case 554:
+	case 564:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2819
+		//line sql.y:2868
 		{
 			if len(yyDollar[1].valTuple) == 1 {
 				yyVAL.expr = &ParenExpr{yyDollar[1].valTuple[0]}
@@ -5984,306 +6056,306 @@ yydefault:
 				yyVAL.expr = yyDollar[1].valTuple
 			}
 		}
-	case 555:
+	case 565:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2829
+		//line sql.y:2878
 		{
 			yyVAL.updateExprs = UpdateExprs{yyDollar[1].updateExpr}
 		}
-	case 556:
+	case 566:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2833
+		//line sql.y:2882
 		{
 			yyVAL.updateExprs = append(yyDollar[1].updateExprs, yyDollar[3].updateExpr)
 		}
-	case 557:
+	case 567:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2839
+		//line sql.y:2888
 		{
 			yyVAL.updateExpr = &UpdateExpr{Name: yyDollar[1].colName, Expr: yyDollar[3].expr}
 		}
-	case 558:
+	case 568:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2845
+		//line sql.y:2894
 		{
 			yyVAL.setExprs = SetExprs{yyDollar[1].setExpr}
 		}
-	case 559:
+	case 569:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2849
+		//line sql.y:2898
 		{
 			yyVAL.setExprs = append(yyDollar[1].setExprs, yyDollar[3].setExpr)
 		}
-	case 560:
+	case 570:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2855
+		//line sql.y:2904
 		{
 			yyVAL.setExpr = &SetExpr{Name: yyDollar[1].colIdent, Expr: NewStrVal([]byte("on"))}
 		}
-	case 561:
+	case 571:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2859
+		//line sql.y:2908
 		{
 			yyVAL.setExpr = &SetExpr{Name: yyDollar[1].colIdent, Expr: yyDollar[3].expr}
 		}
-	case 562:
+	case 572:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2863
+		//line sql.y:2912
 		{
 			yyVAL.setExpr = &SetExpr{Name: NewColIdent(string(yyDollar[1].bytes)), Expr: yyDollar[2].expr}
 		}
-	case 564:
+	case 574:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2870
+		//line sql.y:2919
 		{
 			yyVAL.bytes = []byte("charset")
 		}
-	case 566:
+	case 576:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2877
+		//line sql.y:2926
 		{
 			yyVAL.expr = NewStrVal([]byte(yyDollar[1].colIdent.String()))
 		}
-	case 567:
+	case 577:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2881
+		//line sql.y:2930
 		{
 			yyVAL.expr = NewStrVal(yyDollar[1].bytes)
 		}
-	case 568:
+	case 578:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2885
+		//line sql.y:2934
 		{
 			yyVAL.expr = &Default{}
 		}
-	case 571:
+	case 581:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2894
+		//line sql.y:2943
 		{
 			yyVAL.byt = 0
 		}
-	case 572:
+	case 582:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2896
+		//line sql.y:2945
 		{
 			yyVAL.byt = 1
 		}
-	case 573:
+	case 583:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2899
+		//line sql.y:2948
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 574:
+	case 584:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2901
+		//line sql.y:2950
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 575:
+	case 585:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2904
+		//line sql.y:2953
 		{
 			yyVAL.str = ""
 		}
-	case 576:
+	case 586:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2906
+		//line sql.y:2955
 		{
 			yyVAL.str = IgnoreStr
 		}
-	case 577:
+	case 587:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2910
+		//line sql.y:2959
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 578:
+	case 588:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2912
+		//line sql.y:2961
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 579:
+	case 589:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2914
+		//line sql.y:2963
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 580:
+	case 590:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2916
+		//line sql.y:2965
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 581:
+	case 591:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2918
+		//line sql.y:2967
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 582:
+	case 592:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2920
+		//line sql.y:2969
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 583:
+	case 593:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2922
+		//line sql.y:2971
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 584:
+	case 594:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2924
+		//line sql.y:2973
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 585:
+	case 595:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2926
+		//line sql.y:2975
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 586:
+	case 596:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2928
+		//line sql.y:2977
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 587:
+	case 597:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2931
+		//line sql.y:2980
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 588:
+	case 598:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2933
+		//line sql.y:2982
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 589:
+	case 599:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2935
+		//line sql.y:2984
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 590:
+	case 600:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2939
+		//line sql.y:2988
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 591:
+	case 601:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2941
+		//line sql.y:2990
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 592:
+	case 602:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2944
+		//line sql.y:2993
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 593:
+	case 603:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2946
+		//line sql.y:2995
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 594:
+	case 604:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2948
+		//line sql.y:2997
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 595:
+	case 605:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2951
+		//line sql.y:3000
 		{
 			yyVAL.colIdent = ColIdent{}
 		}
-	case 596:
+	case 606:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2953
+		//line sql.y:3002
 		{
 			yyVAL.colIdent = yyDollar[2].colIdent
 		}
-	case 597:
+	case 607:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2957
+		//line sql.y:3006
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 598:
+	case 608:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2961
+		//line sql.y:3010
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 600:
+	case 610:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2968
+		//line sql.y:3017
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 601:
+	case 611:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2974
+		//line sql.y:3023
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 602:
+	case 612:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2978
+		//line sql.y:3027
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 604:
+	case 614:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2985
+		//line sql.y:3034
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 800:
+	case 813:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3206
+		//line sql.y:3258
 		{
 			if incNesting(yylex) {
 				yylex.Error("max nesting level reached")
 				return 1
 			}
 		}
-	case 801:
+	case 814:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3215
+		//line sql.y:3267
 		{
 			decNesting(yylex)
 		}
-	case 802:
+	case 815:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3220
+		//line sql.y:3272
 		{
 			forceEOF(yylex)
 		}
-	case 803:
+	case 816:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3225
+		//line sql.y:3277
 		{
 			forceEOF(yylex)
 		}
-	case 804:
+	case 817:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3229
+		//line sql.y:3281
 		{
 			forceEOF(yylex)
 		}
-	case 805:
+	case 818:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3233
+		//line sql.y:3285
 		{
 			forceEOF(yylex)
 		}
diff --git a/go/vt/sqlparser/sql.y b/go/vt/sqlparser/sql.y
index a923b35b033..14af4ea1441 100644
--- a/go/vt/sqlparser/sql.y
+++ b/go/vt/sqlparser/sql.y
@@ -106,6 +106,7 @@ func forceEOF(yylex interface{}) {
   indexColumns  []*IndexColumn
   constraintDefinition *ConstraintDefinition
   constraintInfo ConstraintInfo
+  ReferenceAction ReferenceAction
   partDefs      []*PartitionDefinition
   partDef       *PartitionDefinition
   partSpec      *PartitionSpec
@@ -156,7 +157,8 @@ func forceEOF(yylex interface{}) {
 
 // DDL Tokens
 %token <bytes> CREATE ALTER DROP RENAME ANALYZE ADD
-%token <bytes> SCHEMA TABLE INDEX VIEW TO IGNORE IF UNIQUE PRIMARY COLUMN CONSTRAINT SPATIAL FULLTEXT FOREIGN REFERENCES KEY_BLOCK_SIZE
+%token <bytes> SCHEMA TABLE INDEX VIEW TO IGNORE IF UNIQUE PRIMARY COLUMN  SPATIAL FULLTEXT KEY_BLOCK_SIZE
+%token <bytes> ACTION CASCADE CONSTRAINT FOREIGN NO REFERENCES RESTRICT
 %token <bytes> SHOW DESCRIBE EXPLAIN DATE ESCAPE REPAIR OPTIMIZE TRUNCATE
 %token <bytes> MAXVALUE PARTITION REORGANIZE LESS THAN PROCEDURE TRIGGER
 %token <bytes> VINDEX VINDEXES
@@ -299,6 +301,7 @@ func forceEOF(yylex interface{}) {
 %type <vindexParams> vindex_param_list vindex_params_opt
 %type <colIdent> vindex_type vindex_type_opt
 %type <bytes> alter_object_type
+%type <ReferenceAction> fk_reference_action fk_on_delete fk_on_update
 
 %start any_command
 
@@ -1175,6 +1178,52 @@ constraint_info:
   {
     $$ = &ForeignKeyDefinition{Source: $4, ReferencedTable: $7, ReferencedColumns: $9}
   }
+| FOREIGN KEY '(' column_list ')' REFERENCES table_name '(' column_list ')' fk_on_delete
+  {
+    $$ = &ForeignKeyDefinition{Source: $4, ReferencedTable: $7, ReferencedColumns: $9, OnDelete: $11}
+  }
+| FOREIGN KEY '(' column_list ')' REFERENCES table_name '(' column_list ')' fk_on_update
+  {
+    $$ = &ForeignKeyDefinition{Source: $4, ReferencedTable: $7, ReferencedColumns: $9, OnUpdate: $11}
+  }
+| FOREIGN KEY '(' column_list ')' REFERENCES table_name '(' column_list ')' fk_on_delete fk_on_update
+  {
+    $$ = &ForeignKeyDefinition{Source: $4, ReferencedTable: $7, ReferencedColumns: $9, OnDelete: $11, OnUpdate: $12}
+  }
+
+fk_on_delete:
+  ON DELETE fk_reference_action
+  {
+    $$ = $3
+  }
+
+fk_on_update:
+  ON UPDATE fk_reference_action
+  {
+    $$ = $3
+  }
+
+fk_reference_action:
+  RESTRICT
+  {
+    $$ = Restrict
+  }
+| CASCADE
+  {
+    $$ = Cascade
+  }
+| NO ACTION
+  {
+    $$ = NoAction
+  }
+| SET DEFAULT
+  {
+    $$ = SetDefault
+  }
+| SET NULL
+  {
+    $$ = SetNull
+  }
 
 table_option_list:
   {
@@ -3104,6 +3153,7 @@ non_reserved_keyword:
 | BIT
 | BLOB
 | BOOL
+| CASCADE
 | CHAR
 | CHARACTER
 | CHARSET
@@ -3147,6 +3197,7 @@ non_reserved_keyword:
 | MULTIPOLYGON
 | NAMES
 | NCHAR
+| NO
 | NUMERIC
 | OFFSET
 | ONLY
@@ -3163,6 +3214,7 @@ non_reserved_keyword:
 | REORGANIZE
 | REPAIR
 | REPEATABLE
+| RESTRICT
 | ROLLBACK
 | SESSION
 | SERIALIZABLE
diff --git a/go/vt/sqlparser/token.go b/go/vt/sqlparser/token.go
index 344e68f16ea..47be2aa9668 100644
--- a/go/vt/sqlparser/token.go
+++ b/go/vt/sqlparser/token.go
@@ -85,6 +85,7 @@ 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,
+	"action":              ACTION,
 	"add":                 ADD,
 	"against":             AGAINST,
 	"all":                 ALL,
@@ -109,7 +110,7 @@ var keywords = map[string]int{
 	"both":                UNUSED,
 	"by":                  BY,
 	"call":                UNUSED,
-	"cascade":             UNUSED,
+	"cascade":             CASCADE,
 	"case":                CASE,
 	"cast":                CAST,
 	"change":              UNUSED,
@@ -264,6 +265,7 @@ var keywords = map[string]int{
 	"natural":             NATURAL,
 	"nchar":               NCHAR,
 	"next":                NEXT,
+	"no":                  NO,
 	"not":                 NOT,
 	"no_write_to_binlog":  UNUSED,
 	"null":                NULL,
@@ -304,7 +306,7 @@ var keywords = map[string]int{
 	"replace":             REPLACE,
 	"require":             UNUSED,
 	"resignal":            UNUSED,
-	"restrict":            UNUSED,
+	"restrict":            RESTRICT,
 	"return":              UNUSED,
 	"revoke":              UNUSED,
 	"right":               RIGHT,