diff --git a/go/vt/sqlparser/parse_test.go b/go/vt/sqlparser/parse_test.go
index 8af2941cd9f..f25d7d7f154 100644
--- a/go/vt/sqlparser/parse_test.go
+++ b/go/vt/sqlparser/parse_test.go
@@ -938,6 +938,12 @@ var (
 	}, {
 		input:  "alter table a drop spatial index idx (id)",
 		output: "alter table a",
+	}, {
+		input:  "alter table a add check ch_1",
+		output: "alter table a",
+	}, {
+		input:  "alter table a drop check ch_1",
+		output: "alter table a",
 	}, {
 		input:  "alter table a drop foreign key",
 		output: "alter table a",
diff --git a/go/vt/sqlparser/sql.go b/go/vt/sqlparser/sql.go
index 46b8da47869..1d2b2add172 100644
--- a/go/vt/sqlparser/sql.go
+++ b/go/vt/sqlparser/sql.go
@@ -221,136 +221,137 @@ const COLUMN = 57456
 const SPATIAL = 57457
 const FULLTEXT = 57458
 const KEY_BLOCK_SIZE = 57459
-const ACTION = 57460
-const CASCADE = 57461
-const CONSTRAINT = 57462
-const FOREIGN = 57463
-const NO = 57464
-const REFERENCES = 57465
-const RESTRICT = 57466
-const SHOW = 57467
-const DESCRIBE = 57468
-const EXPLAIN = 57469
-const DATE = 57470
-const ESCAPE = 57471
-const REPAIR = 57472
-const OPTIMIZE = 57473
-const TRUNCATE = 57474
-const MAXVALUE = 57475
-const PARTITION = 57476
-const REORGANIZE = 57477
-const LESS = 57478
-const THAN = 57479
-const PROCEDURE = 57480
-const TRIGGER = 57481
-const VINDEX = 57482
-const VINDEXES = 57483
-const STATUS = 57484
-const VARIABLES = 57485
-const WARNINGS = 57486
-const SEQUENCE = 57487
-const BEGIN = 57488
-const START = 57489
-const TRANSACTION = 57490
-const COMMIT = 57491
-const ROLLBACK = 57492
-const BIT = 57493
-const TINYINT = 57494
-const SMALLINT = 57495
-const MEDIUMINT = 57496
-const INT = 57497
-const INTEGER = 57498
-const BIGINT = 57499
-const INTNUM = 57500
-const REAL = 57501
-const DOUBLE = 57502
-const FLOAT_TYPE = 57503
-const DECIMAL = 57504
-const NUMERIC = 57505
-const TIME = 57506
-const TIMESTAMP = 57507
-const DATETIME = 57508
-const YEAR = 57509
-const CHAR = 57510
-const VARCHAR = 57511
-const BOOL = 57512
-const CHARACTER = 57513
-const VARBINARY = 57514
-const NCHAR = 57515
-const TEXT = 57516
-const TINYTEXT = 57517
-const MEDIUMTEXT = 57518
-const LONGTEXT = 57519
-const BLOB = 57520
-const TINYBLOB = 57521
-const MEDIUMBLOB = 57522
-const LONGBLOB = 57523
-const JSON = 57524
-const ENUM = 57525
-const GEOMETRY = 57526
-const POINT = 57527
-const LINESTRING = 57528
-const POLYGON = 57529
-const GEOMETRYCOLLECTION = 57530
-const MULTIPOINT = 57531
-const MULTILINESTRING = 57532
-const MULTIPOLYGON = 57533
-const NULLX = 57534
-const AUTO_INCREMENT = 57535
-const APPROXNUM = 57536
-const SIGNED = 57537
-const UNSIGNED = 57538
-const ZEROFILL = 57539
-const COLLATION = 57540
-const DATABASES = 57541
-const TABLES = 57542
-const VITESS_METADATA = 57543
-const VSCHEMA = 57544
-const FULL = 57545
-const PROCESSLIST = 57546
-const COLUMNS = 57547
-const FIELDS = 57548
-const ENGINES = 57549
-const PLUGINS = 57550
-const NAMES = 57551
-const CHARSET = 57552
-const GLOBAL = 57553
-const SESSION = 57554
-const ISOLATION = 57555
-const LEVEL = 57556
-const READ = 57557
-const WRITE = 57558
-const ONLY = 57559
-const REPEATABLE = 57560
-const COMMITTED = 57561
-const UNCOMMITTED = 57562
-const SERIALIZABLE = 57563
-const CURRENT_TIMESTAMP = 57564
-const DATABASE = 57565
-const CURRENT_DATE = 57566
-const CURRENT_TIME = 57567
-const LOCALTIME = 57568
-const LOCALTIMESTAMP = 57569
-const UTC_DATE = 57570
-const UTC_TIME = 57571
-const UTC_TIMESTAMP = 57572
-const REPLACE = 57573
-const CONVERT = 57574
-const CAST = 57575
-const SUBSTR = 57576
-const SUBSTRING = 57577
-const GROUP_CONCAT = 57578
-const SEPARATOR = 57579
-const TIMESTAMPADD = 57580
-const TIMESTAMPDIFF = 57581
-const MATCH = 57582
-const AGAINST = 57583
-const BOOLEAN = 57584
-const LANGUAGE = 57585
-const WITH = 57586
-const QUERY = 57587
-const EXPANSION = 57588
-const UNUSED = 57589
+const CHECK = 57460
+const ACTION = 57461
+const CASCADE = 57462
+const CONSTRAINT = 57463
+const FOREIGN = 57464
+const NO = 57465
+const REFERENCES = 57466
+const RESTRICT = 57467
+const SHOW = 57468
+const DESCRIBE = 57469
+const EXPLAIN = 57470
+const DATE = 57471
+const ESCAPE = 57472
+const REPAIR = 57473
+const OPTIMIZE = 57474
+const TRUNCATE = 57475
+const MAXVALUE = 57476
+const PARTITION = 57477
+const REORGANIZE = 57478
+const LESS = 57479
+const THAN = 57480
+const PROCEDURE = 57481
+const TRIGGER = 57482
+const VINDEX = 57483
+const VINDEXES = 57484
+const STATUS = 57485
+const VARIABLES = 57486
+const WARNINGS = 57487
+const SEQUENCE = 57488
+const BEGIN = 57489
+const START = 57490
+const TRANSACTION = 57491
+const COMMIT = 57492
+const ROLLBACK = 57493
+const BIT = 57494
+const TINYINT = 57495
+const SMALLINT = 57496
+const MEDIUMINT = 57497
+const INT = 57498
+const INTEGER = 57499
+const BIGINT = 57500
+const INTNUM = 57501
+const REAL = 57502
+const DOUBLE = 57503
+const FLOAT_TYPE = 57504
+const DECIMAL = 57505
+const NUMERIC = 57506
+const TIME = 57507
+const TIMESTAMP = 57508
+const DATETIME = 57509
+const YEAR = 57510
+const CHAR = 57511
+const VARCHAR = 57512
+const BOOL = 57513
+const CHARACTER = 57514
+const VARBINARY = 57515
+const NCHAR = 57516
+const TEXT = 57517
+const TINYTEXT = 57518
+const MEDIUMTEXT = 57519
+const LONGTEXT = 57520
+const BLOB = 57521
+const TINYBLOB = 57522
+const MEDIUMBLOB = 57523
+const LONGBLOB = 57524
+const JSON = 57525
+const ENUM = 57526
+const GEOMETRY = 57527
+const POINT = 57528
+const LINESTRING = 57529
+const POLYGON = 57530
+const GEOMETRYCOLLECTION = 57531
+const MULTIPOINT = 57532
+const MULTILINESTRING = 57533
+const MULTIPOLYGON = 57534
+const NULLX = 57535
+const AUTO_INCREMENT = 57536
+const APPROXNUM = 57537
+const SIGNED = 57538
+const UNSIGNED = 57539
+const ZEROFILL = 57540
+const COLLATION = 57541
+const DATABASES = 57542
+const TABLES = 57543
+const VITESS_METADATA = 57544
+const VSCHEMA = 57545
+const FULL = 57546
+const PROCESSLIST = 57547
+const COLUMNS = 57548
+const FIELDS = 57549
+const ENGINES = 57550
+const PLUGINS = 57551
+const NAMES = 57552
+const CHARSET = 57553
+const GLOBAL = 57554
+const SESSION = 57555
+const ISOLATION = 57556
+const LEVEL = 57557
+const READ = 57558
+const WRITE = 57559
+const ONLY = 57560
+const REPEATABLE = 57561
+const COMMITTED = 57562
+const UNCOMMITTED = 57563
+const SERIALIZABLE = 57564
+const CURRENT_TIMESTAMP = 57565
+const DATABASE = 57566
+const CURRENT_DATE = 57567
+const CURRENT_TIME = 57568
+const LOCALTIME = 57569
+const LOCALTIMESTAMP = 57570
+const UTC_DATE = 57571
+const UTC_TIME = 57572
+const UTC_TIMESTAMP = 57573
+const REPLACE = 57574
+const CONVERT = 57575
+const CAST = 57576
+const SUBSTR = 57577
+const SUBSTRING = 57578
+const GROUP_CONCAT = 57579
+const SEPARATOR = 57580
+const TIMESTAMPADD = 57581
+const TIMESTAMPDIFF = 57582
+const MATCH = 57583
+const AGAINST = 57584
+const BOOLEAN = 57585
+const LANGUAGE = 57586
+const WITH = 57587
+const QUERY = 57588
+const EXPANSION = 57589
+const UNUSED = 57590
 
 var yyToknames = [...]string{
 	"$end",
@@ -487,6 +488,7 @@ var yyToknames = [...]string{
 	"SPATIAL",
 	"FULLTEXT",
 	"KEY_BLOCK_SIZE",
+	"CHECK",
 	"ACTION",
 	"CASCADE",
 	"CONSTRAINT",
@@ -634,1337 +636,1356 @@ var yyExca = [...]int{
 	5, 29,
 	-2, 4,
 	-1, 37,
-	159, 299,
-	160, 299,
-	-2, 287,
-	-1, 262,
-	112, 639,
-	-2, 635,
+	160, 300,
+	161, 300,
+	-2, 288,
 	-1, 263,
 	112, 640,
 	-2, 636,
-	-1, 331,
-	82, 814,
-	-2, 63,
+	-1, 264,
+	112, 641,
+	-2, 637,
 	-1, 332,
-	82, 770,
+	82, 816,
+	-2, 63,
+	-1, 333,
+	82, 772,
 	-2, 64,
-	-1, 337,
-	82, 749,
-	-2, 601,
-	-1, 339,
-	82, 791,
-	-2, 603,
-	-1, 609,
-	1, 351,
-	5, 351,
-	12, 351,
-	13, 351,
-	14, 351,
-	15, 351,
-	17, 351,
-	19, 351,
-	30, 351,
-	31, 351,
-	42, 351,
-	43, 351,
-	44, 351,
-	45, 351,
-	46, 351,
-	48, 351,
-	49, 351,
-	52, 351,
-	53, 351,
-	55, 351,
-	56, 351,
-	265, 351,
-	-2, 369,
-	-1, 612,
+	-1, 338,
+	82, 750,
+	-2, 602,
+	-1, 340,
+	82, 793,
+	-2, 604,
+	-1, 610,
+	1, 352,
+	5, 352,
+	12, 352,
+	13, 352,
+	14, 352,
+	15, 352,
+	17, 352,
+	19, 352,
+	30, 352,
+	31, 352,
+	42, 352,
+	43, 352,
+	44, 352,
+	45, 352,
+	46, 352,
+	48, 352,
+	49, 352,
+	52, 352,
+	53, 352,
+	55, 352,
+	56, 352,
+	266, 352,
+	-2, 370,
+	-1, 613,
 	53, 44,
 	55, 44,
 	-2, 48,
-	-1, 760,
-	112, 642,
-	-2, 638,
-	-1, 989,
+	-1, 761,
+	112, 643,
+	-2, 639,
+	-1, 990,
 	5, 30,
-	-2, 436,
-	-1, 1019,
+	-2, 437,
+	-1, 1020,
 	5, 29,
-	-2, 575,
-	-1, 1263,
-	5, 30,
 	-2, 576,
-	-1, 1316,
-	5, 29,
-	-2, 578,
-	-1, 1394,
+	-1, 1265,
 	5, 30,
+	-2, 577,
+	-1, 1318,
+	5, 29,
 	-2, 579,
+	-1, 1396,
+	5, 30,
+	-2, 580,
 }
 
 const yyPrivate = 57344
 
-const yyLast = 12449
+const yyLast = 12632
 
 var yyAct = [...]int{
 
-	263, 1428, 1418, 1225, 1382, 1022, 267, 565, 1165, 1283,
-	873, 1040, 1199, 1328, 1296, 280, 1023, 1113, 846, 241,
-	466, 869, 1166, 896, 953, 564, 3, 844, 1162, 882,
-	916, 902, 81, 1172, 293, 1137, 206, 872, 57, 206,
-	1178, 785, 336, 709, 795, 723, 1093, 625, 1067, 981,
-	1084, 886, 232, 848, 792, 833, 1046, 813, 762, 497,
-	503, 294, 51, 912, 624, 437, 826, 206, 81, 330,
-	265, 509, 206, 325, 206, 517, 250, 240, 322, 327,
-	614, 56, 579, 1421, 606, 1405, 1416, 1392, 305, 605,
-	311, 312, 309, 310, 308, 307, 306, 233, 234, 235,
-	236, 1413, 580, 239, 313, 314, 1226, 1404, 254, 1391,
-	1154, 1255, 442, 51, 1194, 1195, 1055, 61, 626, 1054,
-	627, 246, 1056, 269, 1357, 530, 529, 539, 540, 532,
-	533, 534, 535, 536, 537, 538, 531, 864, 865, 541,
-	1193, 863, 491, 63, 64, 65, 66, 67, 201, 197,
-	198, 199, 486, 238, 470, 237, 487, 484, 485, 1075,
-	193, 895, 195, 1286, 1303, 1115, 903, 1246, 1244, 231,
-	489, 698, 479, 480, 697, 1117, 695, 1415, 1412, 1383,
-	1112, 827, 1375, 887, 1436, 455, 1329, 1041, 1043, 456,
-	444, 195, 1109, 1432, 206, 1118, 889, 206, 1111, 1331,
-	702, 490, 611, 206, 688, 1188, 794, 889, 696, 206,
-	699, 1337, 81, 889, 81, 1187, 81, 81, 1116, 81,
-	472, 81, 474, 1186, 440, 438, 447, 81, 208, 1100,
-	1364, 196, 947, 468, 475, 946, 476, 477, 203, 478,
-	1266, 481, 1068, 553, 554, 859, 1124, 492, 998, 870,
-	1051, 1008, 471, 473, 194, 975, 734, 81, 1098, 620,
-	521, 462, 541, 731, 1042, 1211, 200, 1330, 531, 324,
-	769, 541, 506, 467, 439, 467, 441, 467, 467, 70,
-	467, 452, 467, 505, 767, 768, 766, 728, 467, 516,
-	493, 494, 888, 1358, 1110, 903, 1108, 885, 883, 1430,
-	884, 333, 1431, 888, 1429, 881, 887, 438, 51, 888,
-	515, 514, 1338, 1336, 256, 71, 1212, 724, 1373, 1390,
-	206, 206, 206, 550, 995, 1099, 552, 516, 1346, 81,
-	1104, 1101, 1094, 1102, 1097, 81, 955, 469, 1095, 1096,
-	436, 1176, 628, 1156, 449, 814, 450, 1138, 604, 451,
-	553, 554, 1103, 814, 563, 1005, 567, 568, 569, 570,
-	571, 572, 573, 574, 575, 507, 578, 581, 581, 581,
-	587, 581, 581, 587, 581, 595, 596, 597, 598, 599,
-	600, 514, 610, 690, 1140, 458, 459, 460, 551, 582,
-	584, 586, 588, 590, 592, 593, 448, 516, 725, 454,
-	613, 443, 1073, 1378, 618, 461, 733, 1437, 622, 583,
-	585, 463, 589, 591, 954, 594, 1396, 994, 1142, 892,
-	1146, 993, 1141, 992, 1139, 893, 553, 554, 511, 1144,
-	1292, 534, 535, 536, 537, 538, 531, 206, 1143, 541,
-	515, 514, 81, 732, 609, 1291, 1438, 206, 206, 81,
-	1088, 1145, 1147, 206, 54, 192, 206, 516, 1087, 206,
-	515, 514, 687, 206, 765, 81, 81, 515, 514, 694,
-	81, 81, 81, 206, 81, 81, 1076, 516, 445, 446,
-	81, 81, 515, 514, 516, 712, 713, 1371, 1398, 1158,
-	714, 715, 716, 1374, 718, 719, 752, 754, 755, 516,
-	720, 721, 753, 467, 1310, 711, 737, 738, 22, 81,
-	467, 1289, 1121, 206, 972, 973, 974, 1085, 958, 81,
-	319, 320, 603, 1228, 612, 739, 467, 467, 786, 818,
-	787, 467, 467, 467, 703, 467, 467, 1057, 1068, 1058,
-	1063, 467, 467, 1334, 1414, 292, 532, 533, 534, 535,
-	536, 537, 538, 531, 515, 514, 541, 500, 504, 763,
-	1400, 496, 333, 81, 760, 758, 1334, 1386, 245, 1334,
-	496, 516, 1334, 1365, 522, 1334, 1333, 79, 788, 804,
-	807, 1281, 1280, 496, 741, 815, 1268, 496, 1265, 496,
-	1218, 1217, 1343, 799, 756, 708, 81, 81, 1214, 1215,
-	1214, 1213, 1342, 206, 987, 496, 830, 496, 1208, 566,
-	707, 206, 206, 335, 51, 206, 206, 691, 577, 206,
-	206, 206, 81, 689, 789, 790, 797, 496, 890, 567,
-	835, 838, 839, 840, 836, 81, 837, 841, 686, 636,
-	1179, 1180, 854, 464, 635, 634, 856, 811, 764, 692,
-	693, 457, 1047, 823, 1163, 700, 1175, 1175, 324, 797,
-	1261, 706, 1047, 711, 1127, 1345, 24, 616, 898, 899,
-	900, 901, 845, 58, 24, 717, 610, 616, 830, 852,
-	610, 904, 905, 906, 909, 910, 911, 1216, 861, 206,
-	81, 860, 81, 857, 1315, 830, 206, 206, 206, 206,
-	206, 877, 206, 206, 24, 1175, 206, 81, 987, 617,
-	922, 619, 924, 987, 54, 748, 918, 1059, 853, 617,
-	615, 615, 54, 206, 829, 206, 206, 951, 1017, 862,
-	206, 1011, 1018, 1010, 609, 987, 615, 621, 609, 735,
-	701, 54, 609, 1406, 1298, 1114, 914, 915, 1299, 830,
-	897, 467, 54, 467, 1273, 759, 917, 335, 1204, 335,
-	1062, 335, 335, 913, 335, 908, 335, 920, 467, 907,
-	495, 247, 335, 1179, 1180, 800, 801, 760, 963, 806,
-	809, 810, 1423, 1419, 530, 529, 539, 540, 532, 533,
-	534, 535, 536, 537, 538, 531, 964, 1206, 541, 965,
-	1182, 763, 519, 726, 822, 828, 824, 825, 539, 540,
-	532, 533, 534, 535, 536, 537, 538, 531, 855, 54,
-	541, 976, 1163, 1089, 729, 977, 705, 747, 1185, 749,
-	750, 206, 206, 206, 206, 206, 1024, 982, 835, 838,
-	839, 840, 836, 206, 837, 841, 206, 1184, 1034, 1031,
-	206, 1030, 1019, 1035, 206, 333, 283, 282, 285, 286,
-	287, 288, 260, 1410, 1032, 284, 289, 1403, 874, 1033,
-	1004, 799, 960, 81, 335, 1036, 1123, 839, 840, 1408,
-	630, 1048, 566, 1060, 970, 802, 803, 969, 1020, 1021,
-	764, 921, 610, 610, 610, 610, 610, 1037, 941, 942,
-	943, 944, 945, 1045, 948, 949, 498, 845, 950, 1044,
-	1052, 1049, 1080, 1050, 633, 610, 1026, 1027, 499, 1029,
-	1025, 81, 81, 1028, 1079, 952, 1081, 1082, 1083, 510,
-	1077, 1078, 959, 251, 252, 1069, 1065, 1066, 1380, 465,
-	1072, 1379, 1091, 868, 508, 1313, 1070, 1064, 1259, 1294,
-	923, 81, 704, 971, 609, 609, 609, 609, 609, 1086,
-	843, 248, 249, 510, 968, 242, 1351, 206, 759, 609,
-	243, 1119, 967, 58, 1105, 1350, 81, 609, 1092, 1301,
-	1047, 488, 999, 467, 1425, 1424, 60, 335, 996, 722,
-	512, 1425, 1361, 1287, 335, 730, 62, 55, 1120, 1,
-	986, 1417, 1227, 1295, 929, 1381, 1327, 1198, 880, 871,
-	335, 335, 467, 69, 435, 335, 335, 335, 1002, 335,
-	335, 81, 81, 1164, 1024, 335, 335, 68, 1131, 1372,
-	1149, 1130, 1136, 879, 878, 1148, 740, 1335, 1285, 891,
-	1074, 1155, 894, 1205, 1071, 81, 1169, 961, 962, 1377,
-	504, 760, 963, 1167, 743, 641, 639, 640, 638, 643,
-	81, 642, 81, 81, 519, 637, 219, 335, 328, 1183,
-	842, 629, 1197, 919, 513, 72, 1107, 1106, 1189, 1174,
-	1168, 925, 51, 727, 482, 1190, 483, 221, 549, 966,
-	206, 1053, 334, 1201, 796, 798, 1170, 1196, 736, 1209,
-	1210, 502, 1349, 1300, 1003, 1192, 874, 206, 791, 576,
-	812, 268, 988, 81, 1202, 1203, 81, 81, 81, 206,
-	751, 281, 278, 279, 816, 81, 742, 1016, 206, 1006,
-	523, 266, 258, 555, 556, 557, 558, 559, 560, 561,
-	562, 820, 821, 608, 601, 1233, 1220, 834, 832, 831,
-	323, 1181, 1177, 607, 1126, 1235, 1254, 1356, 1221, 746,
-	1223, 26, 1239, 1240, 59, 1241, 253, 335, 1243, 1125,
-	1245, 19, 18, 1242, 17, 20, 16, 15, 14, 453,
-	335, 30, 1024, 1234, 21, 13, 12, 11, 10, 610,
-	9, 8, 1270, 1260, 7, 6, 5, 81, 4, 244,
-	23, 2, 0, 0, 0, 81, 0, 1060, 0, 1129,
-	1279, 0, 0, 1269, 0, 0, 1253, 496, 0, 0,
-	81, 0, 0, 0, 1282, 0, 0, 81, 0, 0,
-	0, 0, 0, 0, 0, 335, 0, 335, 0, 0,
-	1293, 0, 1159, 0, 0, 1288, 0, 1290, 1275, 1276,
-	1277, 609, 335, 0, 530, 529, 539, 540, 532, 533,
-	534, 535, 536, 537, 538, 531, 81, 81, 541, 81,
-	1122, 0, 1302, 0, 81, 0, 81, 81, 81, 206,
-	335, 467, 81, 1322, 1314, 1323, 1324, 1325, 0, 1321,
-	1316, 0, 1219, 874, 1332, 874, 1167, 1326, 0, 81,
-	206, 0, 0, 1339, 0, 0, 0, 0, 1347, 1222,
-	1340, 0, 1341, 0, 0, 0, 0, 0, 984, 0,
-	1157, 1232, 985, 1168, 1362, 0, 1317, 0, 0, 989,
-	990, 991, 0, 0, 0, 81, 997, 0, 1369, 1000,
-	1001, 1370, 0, 1363, 0, 1007, 81, 81, 0, 1009,
-	1167, 0, 1012, 1013, 1014, 1015, 1344, 1385, 1129, 1388,
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-	94, 0, 166, 185, 186, 0, 0, 95, 108, 104,
-	143, 135, 93, 114, 158, 117, 124, 149, 189, 140,
-	154, 98, 177, 159, 0, 0, 0, 0, 0, 0,
+	0, 0, 110, 0, 0, 0, 208, 0, 0, 0,
+	0, 147, 0, 164, 112, 120, 94, 83, 90, 0,
+	111, 138, 152, 156, 0, 0, 0, 100, 0, 154,
+	142, 177, 0, 143, 153, 124, 169, 148, 176, 184,
+	185, 166, 183, 188, 158, 84, 165, 175, 98, 157,
+	86, 173, 163, 130, 116, 117, 85, 0, 151, 103,
+	108, 102, 139, 170, 171, 101, 191, 91, 182, 88,
+	92, 181, 137, 168, 174, 131, 128, 87, 172, 129,
+	127, 119, 106, 113, 145, 126, 146, 114, 134, 133,
+	135, 0, 0, 0, 162, 179, 192, 95, 0, 167,
+	186, 187, 0, 0, 96, 109, 105, 144, 136, 93,
+	115, 159, 118, 125, 150, 190, 141, 155, 99, 178,
+	160, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 140,
+	82, 89, 122, 189, 149, 107, 180, 603, 104, 0,
+	0, 0, 0, 0, 121, 0, 123, 0, 0, 161,
+	132, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 206, 0,
+	0, 0, 0, 0, 0, 0, 0, 97, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 139, 82, 89, 121, 188, 148, 106, 179,
-	602, 103, 0, 0, 0, 0, 0, 120, 0, 122,
-	0, 0, 160, 131, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 205, 0, 0, 0, 0, 0, 0, 0, 0,
-	96, 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, 110, 0, 0, 0, 208, 0, 0, 0,
+	0, 147, 0, 164, 112, 120, 94, 83, 90, 0,
+	111, 138, 152, 156, 0, 0, 0, 100, 0, 154,
+	142, 177, 0, 143, 153, 124, 169, 148, 176, 184,
+	185, 166, 183, 188, 158, 84, 165, 175, 98, 157,
+	86, 173, 163, 130, 116, 117, 85, 0, 151, 103,
+	108, 102, 139, 170, 171, 101, 191, 91, 182, 88,
+	92, 181, 137, 168, 174, 131, 128, 87, 172, 129,
+	127, 119, 106, 113, 145, 126, 146, 114, 134, 133,
+	135, 0, 0, 0, 162, 179, 192, 95, 0, 167,
+	186, 187, 0, 0, 96, 109, 105, 144, 136, 93,
+	115, 159, 118, 125, 150, 190, 141, 155, 99, 178,
+	160, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 322, 0, 0, 0, 0, 0, 0, 140, 0,
+	82, 89, 122, 189, 149, 107, 180, 104, 0, 0,
+	0, 0, 0, 121, 0, 123, 0, 0, 161, 132,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 109, 0, 0, 0, 207,
-	0, 0, 0, 0, 146, 0, 163, 111, 119, 83,
-	90, 0, 110, 137, 151, 155, 0, 0, 0, 99,
-	0, 153, 141, 176, 0, 142, 152, 123, 168, 147,
-	175, 183, 184, 165, 182, 187, 157, 84, 164, 174,
-	97, 156, 86, 172, 162, 129, 115, 116, 85, 0,
-	150, 102, 107, 101, 138, 169, 170, 100, 190, 91,
-	181, 88, 92, 180, 136, 167, 173, 130, 127, 87,
-	171, 128, 126, 118, 105, 112, 144, 125, 145, 113,
-	133, 132, 134, 0, 0, 0, 161, 178, 191, 94,
-	0, 166, 185, 186, 0, 0, 95, 108, 104, 143,
-	135, 93, 114, 158, 117, 124, 149, 189, 140, 154,
-	98, 177, 159, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 321, 0, 0, 0, 0, 0, 0,
-	139, 0, 82, 89, 121, 188, 148, 106, 179, 103,
-	0, 0, 0, 0, 0, 120, 0, 122, 0, 0,
-	160, 131, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 205,
-	0, 0, 0, 0, 0, 0, 0, 0, 96, 0,
+	0, 0, 0, 0, 0, 0, 0, 206, 0, 0,
+	0, 0, 0, 0, 0, 0, 97, 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, 109, 0, 0, 0, 207, 0, 0,
-	0, 0, 146, 0, 163, 111, 119, 83, 90, 0,
-	110, 137, 151, 155, 0, 0, 0, 99, 0, 153,
-	141, 176, 0, 142, 152, 123, 168, 147, 175, 183,
-	184, 165, 182, 187, 157, 84, 164, 174, 97, 156,
-	86, 172, 162, 129, 115, 116, 85, 0, 150, 102,
-	107, 101, 138, 169, 170, 100, 190, 91, 181, 88,
-	92, 180, 136, 167, 173, 130, 127, 87, 171, 128,
-	126, 118, 105, 112, 144, 125, 145, 113, 133, 132,
-	134, 0, 0, 0, 161, 178, 191, 94, 0, 166,
-	185, 186, 0, 0, 95, 108, 104, 143, 135, 93,
-	114, 158, 117, 124, 149, 189, 140, 154, 98, 177,
-	159, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 139, 0,
-	82, 89, 121, 188, 148, 106, 179, 103, 0, 0,
-	0, 0, 0, 120, 0, 122, 0, 0, 160, 131,
+	0, 110, 0, 0, 0, 208, 0, 0, 0, 0,
+	147, 0, 164, 112, 120, 94, 83, 90, 0, 111,
+	138, 152, 156, 0, 0, 0, 100, 0, 154, 142,
+	177, 0, 143, 153, 124, 169, 148, 176, 184, 185,
+	166, 183, 188, 158, 84, 165, 175, 98, 157, 86,
+	173, 163, 130, 116, 117, 85, 0, 151, 103, 108,
+	102, 139, 170, 171, 101, 191, 91, 182, 88, 92,
+	181, 137, 168, 174, 131, 128, 87, 172, 129, 127,
+	119, 106, 113, 145, 126, 146, 114, 134, 133, 135,
+	0, 0, 0, 162, 179, 192, 95, 0, 167, 186,
+	187, 0, 0, 96, 109, 105, 144, 136, 93, 115,
+	159, 118, 125, 150, 190, 141, 155, 99, 178, 160,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 205, 0, 0,
-	0, 0, 0, 0, 0, 0, 96, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 140, 0, 82,
+	89, 122, 189, 149, 107, 180, 104, 0, 0, 0,
+	0, 0, 121, 0, 123, 0, 0, 161, 132, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 206, 0, 0, 0,
+	0, 0, 0, 0, 0, 97, 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, 109, 0, 202, 0, 207, 0, 0, 0, 0,
-	146, 0, 163, 111, 119, 83, 90, 0, 110, 137,
-	151, 155, 0, 0, 0, 99, 0, 153, 141, 176,
-	0, 142, 152, 123, 168, 147, 175, 183, 184, 165,
-	182, 187, 157, 84, 164, 174, 97, 156, 86, 172,
-	162, 129, 115, 116, 85, 0, 150, 102, 107, 101,
-	138, 169, 170, 100, 190, 91, 181, 88, 92, 180,
-	136, 167, 173, 130, 127, 87, 171, 128, 126, 118,
-	105, 112, 144, 125, 145, 113, 133, 132, 134, 0,
-	0, 0, 161, 178, 191, 94, 0, 166, 185, 186,
-	0, 0, 95, 108, 104, 143, 135, 93, 114, 158,
-	117, 124, 149, 189, 140, 154, 98, 177, 159, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 139, 0, 82, 89,
-	121, 188, 148, 106, 179, 103, 0, 0, 0, 0,
-	0, 120, 0, 122, 0, 0, 160, 131, 0, 0,
+	110, 0, 203, 0, 208, 0, 0, 0, 0, 147,
+	0, 164, 112, 120, 94, 83, 90, 0, 111, 138,
+	152, 156, 0, 0, 0, 100, 0, 154, 142, 177,
+	0, 143, 153, 124, 169, 148, 176, 184, 185, 166,
+	183, 188, 158, 84, 165, 175, 98, 157, 86, 173,
+	163, 130, 116, 117, 85, 0, 151, 103, 108, 102,
+	139, 170, 171, 101, 191, 91, 182, 88, 92, 181,
+	137, 168, 174, 131, 128, 87, 172, 129, 127, 119,
+	106, 113, 145, 126, 146, 114, 134, 133, 135, 0,
+	0, 0, 162, 179, 192, 95, 0, 167, 186, 187,
+	0, 0, 96, 109, 105, 144, 136, 93, 115, 159,
+	118, 125, 150, 190, 141, 155, 99, 178, 160, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 140, 0, 82, 89,
+	122, 189, 149, 107, 180, 104, 0, 0, 0, 0,
+	0, 121, 0, 123, 0, 0, 161, 132, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 80, 0, 0, 0, 0,
-	0, 0, 0, 0, 96, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 97, 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, 109,
-	0, 0, 0, 207, 0, 0, 0, 0, 146, 0,
-	163, 111, 119, 83, 90, 0, 110, 137, 151, 155,
-	0, 0, 0, 99, 0, 153, 141, 176, 0, 142,
-	152, 123, 168, 147, 175, 183, 184, 165, 182, 187,
-	157, 84, 164, 174, 97, 156, 86, 172, 162, 129,
-	115, 116, 85, 0, 150, 102, 107, 101, 138, 169,
-	170, 100, 190, 91, 181, 88, 92, 180, 136, 167,
-	173, 130, 127, 87, 171, 128, 126, 118, 105, 112,
-	144, 125, 145, 113, 133, 132, 134, 0, 0, 0,
-	161, 178, 191, 94, 0, 166, 185, 186, 0, 0,
-	95, 108, 104, 143, 135, 93, 114, 158, 117, 124,
-	149, 189, 140, 154, 98, 177, 159, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 110,
+	0, 0, 0, 208, 0, 0, 0, 0, 147, 0,
+	164, 112, 120, 94, 83, 90, 0, 111, 138, 152,
+	156, 0, 0, 0, 100, 0, 154, 142, 177, 0,
+	143, 153, 124, 169, 148, 176, 184, 185, 166, 183,
+	188, 158, 84, 165, 175, 98, 157, 86, 173, 163,
+	130, 116, 117, 85, 0, 151, 103, 108, 102, 139,
+	170, 171, 101, 191, 91, 182, 88, 92, 181, 137,
+	168, 174, 131, 128, 87, 172, 129, 127, 119, 106,
+	113, 145, 126, 146, 114, 134, 133, 135, 0, 0,
+	0, 162, 179, 192, 95, 0, 167, 186, 187, 0,
+	0, 96, 109, 105, 144, 136, 93, 115, 159, 118,
+	125, 150, 190, 141, 155, 99, 178, 160, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 139, 0, 82, 89, 121, 188,
-	148, 106, 179, 103, 0, 0, 0, 0, 0, 120,
-	0, 122, 0, 0, 160, 131, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 140, 0, 82, 89, 122,
+	189, 149, 107, 180, 104, 0, 0, 0, 0, 0,
+	121, 0, 123, 0, 0, 161, 132, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 205, 0, 0, 0, 0, 0, 0,
-	0, 0, 96, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 206, 0, 0, 0, 0, 0,
+	0, 0, 0, 97, 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, 109, 0, 0,
-	0, 207, 0, 0, 0, 0, 146, 0, 163, 111,
-	119, 83, 90, 0, 110, 137, 151, 155, 0, 0,
-	0, 99, 0, 153, 141, 176, 0, 142, 152, 123,
-	168, 147, 175, 183, 184, 165, 182, 187, 157, 84,
-	164, 174, 97, 156, 86, 172, 162, 129, 115, 116,
-	85, 0, 150, 102, 107, 101, 138, 169, 170, 100,
-	190, 91, 181, 88, 92, 180, 136, 167, 173, 130,
-	127, 87, 171, 128, 126, 118, 105, 112, 144, 125,
-	145, 113, 133, 132, 134, 0, 0, 0, 161, 178,
-	191, 94, 0, 166, 185, 186, 0, 0, 95, 108,
-	104, 143, 135, 93, 114, 158, 117, 124, 149, 189,
-	140, 154, 98, 177, 159, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 110, 0,
+	0, 0, 208, 0, 0, 0, 0, 147, 0, 164,
+	112, 120, 94, 83, 90, 0, 111, 138, 152, 156,
+	0, 0, 0, 100, 0, 154, 142, 177, 0, 143,
+	153, 124, 169, 148, 176, 184, 185, 166, 183, 188,
+	158, 84, 165, 175, 98, 157, 86, 173, 163, 130,
+	116, 117, 85, 0, 151, 103, 108, 102, 139, 170,
+	171, 101, 191, 91, 182, 88, 92, 181, 137, 168,
+	174, 131, 128, 87, 172, 129, 127, 119, 106, 113,
+	145, 126, 146, 114, 134, 133, 135, 0, 0, 0,
+	162, 179, 192, 95, 0, 167, 186, 187, 0, 0,
+	96, 109, 105, 144, 136, 93, 115, 159, 118, 125,
+	150, 190, 141, 155, 99, 178, 160, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 139, 0, 82, 89, 121, 188, 148, 106,
-	179, 103, 0, 0, 0, 0, 0, 120, 0, 122,
-	0, 0, 160, 131, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 140, 0, 82, 89, 122, 189,
+	149, 107, 180, 104, 0, 0, 0, 0, 0, 121,
+	0, 123, 0, 0, 161, 132, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 262, 0, 0, 0, 0, 0, 0, 0, 0,
-	96, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 263, 0, 0, 0, 0, 0, 0,
+	0, 0, 97, 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, 109, 0, 0, 0, 207,
-	0, 0, 0, 0, 146, 0, 163, 111, 119, 83,
-	90, 0, 110, 137, 151, 155, 0, 0, 0, 99,
-	0, 153, 141, 176, 0, 142, 152, 123, 168, 147,
-	175, 183, 184, 165, 182, 187, 157, 84, 164, 174,
-	97, 156, 86, 172, 162, 129, 115, 116, 85, 0,
-	150, 102, 107, 101, 138, 169, 170, 100, 190, 91,
-	181, 88, 92, 180, 136, 167, 173, 130, 127, 87,
-	171, 128, 126, 118, 105, 112, 144, 125, 145, 113,
-	133, 132, 134, 0, 0, 0, 161, 178, 191, 94,
-	0, 166, 185, 186, 0, 0, 95, 108, 104, 143,
-	135, 93, 114, 158, 117, 124, 149, 189, 140, 154,
-	98, 177, 159, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 110, 0, 0,
+	0, 208, 0, 0, 0, 0, 147, 0, 164, 112,
+	120, 94, 83, 90, 0, 111, 138, 152, 156, 0,
+	0, 0, 100, 0, 154, 142, 177, 0, 143, 153,
+	124, 169, 148, 176, 184, 185, 166, 183, 188, 158,
+	84, 165, 175, 98, 157, 86, 173, 163, 130, 116,
+	117, 85, 0, 151, 103, 108, 102, 139, 170, 171,
+	101, 191, 91, 182, 88, 92, 181, 137, 168, 174,
+	131, 128, 87, 172, 129, 127, 119, 106, 113, 145,
+	126, 146, 114, 134, 133, 135, 0, 0, 0, 162,
+	179, 192, 95, 0, 167, 186, 187, 0, 0, 96,
+	109, 105, 144, 136, 93, 115, 159, 118, 125, 150,
+	190, 141, 155, 99, 178, 160, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 82, 89, 121, 188, 148, 106, 179,
+	0, 0, 0, 0, 0, 82, 89, 122, 189, 149,
+	107, 180,
 }
 var yyPact = [...]int{
 
-	1455, -1000, -184, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	1503, -1000, -185, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, 958, 981, -1000, -1000, -1000, -1000, -1000, -1000,
-	225, 8842, 35, 108, 26, 11470, 105, 1748, 11946, -1000,
-	4, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -62, -64,
-	-1000, 668, -1000, -1000, -1000, -1000, -1000, 948, 954, 765,
-	941, 893, -1000, 6380, 64, 64, 11232, 5639, -1000, -1000,
-	250, 11946, 100, 11946, -136, 62, 62, 62, -1000, -1000,
+	-1000, -1000, 971, 1025, -1000, -1000, -1000, -1000, -1000, -1000,
+	369, 8762, 28, 113, 26, 11649, 109, 1646, 12127, -1000,
+	4, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -64, -76,
+	-1000, 765, -1000, -1000, -1000, -1000, -1000, 965, 969, 802,
+	959, 873, -1000, 6538, 69, 69, 11410, 5546, -1000, -1000,
+	363, 12127, 102, 12127, -138, 63, 63, 63, -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,
@@ -1976,21 +1997,21 @@ 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, 103, 11946, 229, -1000, 11946, 61, 594, 61,
-	61, 61, 11946, -1000, 149, -1000, -1000, -1000, 11946, 586,
-	909, 3299, 97, 3299, -1000, 3299, 3299, -1000, 3299, 13,
-	3299, -65, 969, 10, -16, -1000, 3299, -1000, -1000, -1000,
+	-1000, -1000, -1000, 108, 12127, 197, -1000, 12127, 62, 578,
+	62, 62, 62, 12127, -1000, 158, -1000, -1000, -1000, 12127,
+	574, 920, 3197, 78, 3197, -1000, 3197, 3197, -1000, 3197,
+	11, 3197, -66, 996, 12, 3, -1000, 3197, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	527, 887, 7369, 7369, 958, -1000, 668, -1000, -1000, -1000,
-	908, -1000, -1000, 363, 979, -1000, 8604, 148, -1000, 7369,
-	1920, 687, -1000, -1000, 687, -1000, -1000, 130, -1000, -1000,
-	8110, 8110, 8110, 8110, 8110, 8110, 8110, 8110, -1000, -1000,
+	-1000, 501, 922, 7531, 7531, 971, -1000, 765, -1000, -1000,
+	-1000, 898, -1000, -1000, 332, 1007, -1000, 2399, 157, -1000,
+	7531, 1947, 720, -1000, -1000, 720, -1000, -1000, 125, -1000,
+	-1000, 8275, 8275, 8275, 8275, 8275, 8275, 8275, 8275, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, 687, -1000, 7122, 687, 687, 687, 687, 687,
-	687, 687, 687, 7369, 687, 687, 687, 687, 687, 687,
-	687, 687, 687, 687, 687, 687, 687, 687, 687, 10994,
-	10279, 11946, 666, 656, -1000, -1000, 147, 682, 5379, -112,
-	-1000, -1000, -1000, 260, 10041, -1000, -1000, -1000, 884, -1000,
+	-1000, -1000, -1000, 720, -1000, 7283, 720, 720, 720, 720,
+	720, 720, 720, 720, 7531, 720, 720, 720, 720, 720,
+	720, 720, 720, 720, 720, 720, 720, 720, 720, 720,
+	11171, 10453, 12127, 740, 712, -1000, -1000, 156, 744, 5285,
+	-117, -1000, -1000, -1000, 233, 10214, -1000, -1000, -1000, 919,
 	-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,
@@ -2000,130 +2021,131 @@ 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, -1000, -1000, 589, 11946, -1000, 1955, -1000,
-	581, 3299, 79, 566, 309, 560, 11946, 11946, 3299, 19,
-	51, 48, 11946, 685, 74, 11946, 929, 774, 11946, 553,
-	538, -1000, 5119, -1000, 3299, 3299, -1000, -1000, -1000, 3299,
-	3299, 3299, 11946, 3299, 3299, -1000, -1000, -1000, -1000, 3299,
-	3299, -1000, 978, 306, -1000, -1000, -1000, -1000, 7369, 197,
-	-1000, 772, -1000, -1000, -1000, -1000, -1000, -1000, 986, 171,
-	388, 144, 684, -1000, 482, 948, 527, 893, 9803, 784,
-	-1000, -1000, 11946, -1000, 7369, 7369, 428, -1000, 10755, -1000,
-	-1000, 4079, 200, 8110, 400, 194, 8110, 8110, 8110, 8110,
-	8110, 8110, 8110, 8110, 8110, 8110, 8110, 8110, 8110, 8110,
-	8110, 471, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	521, -1000, 668, 798, 798, 155, 155, 155, 155, 155,
-	155, 155, 8357, 5886, 527, 571, 238, 7122, 6380, 6380,
-	7369, 7369, 6874, 6627, 6380, 942, 267, 238, 12184, -1000,
-	-1000, 7863, -1000, -1000, -1000, -1000, -1000, 527, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, 11708, 11708, 6380, 6380, 6380,
-	6380, 30, 11946, -1000, 694, 796, -1000, -1000, -1000, 938,
-	9318, 9565, 30, 665, 10279, 11946, -1000, -1000, 10279, 11946,
-	3819, 4859, 682, -112, 674, -1000, -90, -96, 2479, 142,
-	-1000, -1000, -1000, -1000, 3039, 168, 572, 351, -52, -1000,
-	-1000, -1000, 696, -1000, 696, 696, 696, 696, -22, -22,
-	-22, -22, -1000, -1000, -1000, -1000, -1000, 715, 711, -1000,
-	696, 696, 696, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, -1000, -1000, 700, 12127, -1000, 2063,
+	-1000, 561, 3197, 84, 548, 263, 531, 12127, 12127, 3197,
+	19, 58, 61, 12127, 749, 73, 12127, 950, 808, 12127,
+	511, 506, -1000, 5024, -1000, 3197, 3197, -1000, -1000, -1000,
+	3197, 3197, 3197, 12127, 3197, 3197, -1000, -1000, -1000, -1000,
+	3197, 3197, -1000, 1006, 295, -1000, -1000, -1000, -1000, 7531,
+	198, -1000, 807, -1000, -1000, -1000, -1000, -1000, -1000, 1019,
+	179, 572, 152, 748, -1000, 552, 965, 501, 873, 9975,
+	811, -1000, -1000, 12127, -1000, 7531, 7531, 564, -1000, 10931,
+	-1000, -1000, 3980, 206, 8275, 415, 316, 8275, 8275, 8275,
+	8275, 8275, 8275, 8275, 8275, 8275, 8275, 8275, 8275, 8275,
+	8275, 8275, 443, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, 503, -1000, 765, 820, 820, 173, 173, 173, 173,
+	173, 173, 173, 8523, 6042, 501, 662, 477, 7283, 6538,
+	6538, 7531, 7531, 7034, 6786, 6538, 955, 254, 477, 12366,
+	-1000, -1000, 8027, -1000, -1000, -1000, -1000, -1000, 501, -1000,
+	-1000, -1000, -1000, -1000, -1000, -1000, 11888, 11888, 6538, 6538,
+	6538, 6538, 35, 12127, -1000, 702, 916, -1000, -1000, -1000,
+	952, 9488, 9736, 35, 722, 10453, 12127, -1000, -1000, 10453,
+	12127, 3719, 4763, 744, -117, 730, -1000, -91, -96, 5794,
+	165, -1000, -1000, -1000, -1000, 2936, 172, 630, 314, -51,
+	-1000, -1000, -1000, 760, -1000, 760, 760, 760, 760, -24,
+	-24, -24, -24, -1000, -1000, -1000, -1000, -1000, 788, 783,
+	-1000, 760, 760, 760, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, 709, 709, 709, 702, 702, 714, -1000, 11946, 3299,
-	927, 3299, -1000, 1441, -1000, 11946, 11946, 11946, 11946, 11946,
-	115, 11946, 11946, 681, -1000, 11946, 3299, -1000, -1000, -1000,
+	-1000, -1000, 772, 772, 772, 766, 766, 793, -1000, 12127,
+	3197, 948, 3197, -1000, 145, -1000, 12127, 12127, 12127, 12127,
+	12127, 120, 12127, 12127, 741, -1000, 12127, 3197, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, 11946, 324, 11946, 11946, 238, -1000, 459, 11946,
-	-1000, 834, 7369, 7369, 4599, 7369, -1000, -1000, -1000, 887,
-	-1000, 942, 953, -1000, 853, 850, 6380, -1000, -1000, 200,
-	308, -1000, -1000, 446, -1000, -1000, -1000, -1000, 143, 687,
-	-1000, 1659, -1000, -1000, -1000, -1000, 400, 8110, 8110, 8110,
-	691, 1659, 1613, 713, 2197, 155, 332, 332, 164, 164,
-	164, 164, 164, 449, 449, -1000, -1000, -1000, 527, -1000,
-	-1000, -1000, 527, 6380, 680, -1000, -1000, 7369, -1000, 527,
-	549, 549, 368, 395, 313, 977, 549, 237, 971, 549,
-	549, 6380, 275, -1000, 7369, 527, -1000, 139, -1000, 1161,
-	678, 676, 549, 527, 549, 549, 698, 687, -1000, 12184,
-	10279, 10279, 10279, 10279, 10279, -1000, 809, 807, -1000, 822,
-	806, 833, 11946, -1000, 551, 9318, 137, 687, -1000, 10517,
-	-1000, -1000, 968, 10279, 640, -1000, 640, -1000, 138, -1000,
-	-1000, 674, -112, -116, -1000, -1000, -1000, -1000, 238, -1000,
-	480, 662, 2779, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	706, 483, -1000, 919, 179, 185, 481, 918, -1000, -1000,
-	-1000, 911, -1000, 334, -55, -1000, -1000, 416, -22, -22,
-	-1000, -1000, 142, 882, 142, 142, 142, 458, 458, -1000,
-	-1000, -1000, -1000, 398, -1000, -1000, -1000, 390, -1000, 771,
-	11708, 3299, -1000, -1000, -1000, -1000, 201, 201, 170, -1000,
+	-1000, -1000, -1000, 12127, 313, 12127, 12127, 477, -1000, 462,
+	12127, -1000, 864, 7531, 7531, 4502, 7531, -1000, -1000, -1000,
+	922, -1000, 955, 970, -1000, 906, 887, 6538, -1000, -1000,
+	206, 388, -1000, -1000, 510, -1000, -1000, -1000, -1000, 135,
+	720, -1000, 2062, -1000, -1000, -1000, -1000, 415, 8275, 8275,
+	8275, 391, 2062, 1827, 829, 2015, 173, 507, 507, 180,
+	180, 180, 180, 180, 153, 153, -1000, -1000, -1000, 501,
+	-1000, -1000, -1000, 501, 6538, 737, -1000, -1000, 7531, -1000,
+	501, 640, 640, 452, 500, 342, 1005, 640, 328, 1004,
+	640, 640, 6538, 255, -1000, 7531, 501, -1000, 133, -1000,
+	333, 735, 733, 640, 501, 640, 640, 716, 720, -1000,
+	12366, 10453, 10453, 10453, 10453, 10453, -1000, 850, 849, -1000,
+	828, 826, 902, 12127, -1000, 650, 9488, 155, 720, -1000,
+	10692, -1000, -1000, 979, 10453, 690, -1000, 690, -1000, 132,
+	-1000, -1000, 730, -117, -121, -1000, -1000, -1000, -1000, 477,
+	-1000, 456, 728, 2675, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, 770, 494, -1000, 939, 161, 202, 491, 938, -1000,
+	-1000, -1000, 926, -1000, 270, -54, -1000, -1000, 436, -24,
+	-24, -1000, -1000, 165, 915, 165, 165, 165, 460, 460,
+	-1000, -1000, -1000, -1000, 418, -1000, -1000, -1000, 398, -1000,
+	806, 11888, 3197, -1000, -1000, -1000, -1000, 423, 423, 205,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	29, 692, -1000, -1000, -1000, -1000, 8, 18, 69, -1000,
-	3299, -1000, 306, -1000, 453, 7369, -1000, -1000, -1000, -1000,
-	837, 238, 238, 134, -1000, -1000, 11946, -1000, -1000, -1000,
-	-1000, 653, -1000, -1000, -1000, 3559, 6380, -1000, 691, 1659,
-	1338, -1000, 8110, 8110, -1000, -1000, 549, 6380, 238, -1000,
-	-1000, -1000, 239, 471, 239, 8110, 8110, -1000, 8110, 8110,
-	-1000, -148, 658, 262, -1000, 7369, 410, -1000, 4599, -1000,
-	8110, 8110, -1000, -1000, -1000, -1000, 770, 12184, 687, -1000,
-	9080, 11708, 650, -1000, 259, 796, 721, 748, 588, -1000,
-	-1000, -1000, -1000, 805, -1000, 786, -1000, -1000, -1000, -1000,
-	-1000, 99, 91, 81, 11708, -1000, 958, 7369, 640, -1000,
-	-1000, 146, -1000, -1000, -92, -122, -1000, -1000, -1000, 3039,
-	-1000, 3039, 11708, 45, -1000, 481, 481, -1000, -1000, -1000,
-	704, 745, 8110, -1000, -1000, -1000, 552, 142, 142, -1000,
-	208, -1000, -1000, -1000, 545, -1000, 543, 632, 535, 11946,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, -1000, 11946, -1000, -1000, -1000,
-	-1000, -1000, 11708, -155, 466, 11708, 11708, 11708, 11946, -1000,
-	324, -1000, 238, -1000, 4339, -1000, 968, 10279, -1000, -1000,
-	527, -1000, 8110, 1659, 1659, -1000, -1000, 527, 696, 696,
-	-1000, 696, 702, -1000, 696, -5, 696, -6, 527, 527,
-	2149, 2092, 1936, 1629, 687, -143, -1000, 238, 7369, -1000,
-	1540, 1429, -1000, 921, 602, 605, -1000, -1000, 6133, 527,
-	533, 128, 531, -1000, 958, 12184, 7369, -1000, -1000, 7369,
-	700, -1000, 7369, -1000, -1000, -1000, 687, 687, 687, 531,
-	948, 238, -1000, -1000, -1000, -1000, 2779, -1000, 526, -1000,
-	696, -1000, -1000, -1000, 11708, -47, 984, 1659, -1000, -1000,
-	-1000, -1000, -1000, -22, 452, -22, 385, -1000, 370, 3299,
-	-1000, -1000, -1000, -1000, 923, -1000, 4339, -1000, -1000, 690,
-	695, -1000, -1000, -1000, 966, 623, -1000, 1659, -1000, -1000,
-	107, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, 8110,
-	8110, 8110, 8110, 8110, 527, 445, 238, 8110, 8110, 917,
-	-1000, 687, -1000, -1000, 660, 11708, 11708, -1000, 11708, 948,
-	-1000, 238, 238, 11708, 238, 11708, 11708, 11708, 2201, -1000,
-	133, 11708, -1000, 520, -1000, 183, -1000, -151, 142, -1000,
-	142, 546, 536, -1000, 687, 610, -1000, 246, 11708, 11946,
-	961, 950, -1000, -1000, 1161, 1161, 1161, 1161, 32, -1000,
-	-1000, 1161, 1161, 983, -1000, 687, -1000, 668, 118, -1000,
-	-1000, -1000, 517, 514, 514, 514, 137, 133, -1000, 430,
-	236, 434, -1000, 42, 11708, 337, 913, -1000, 910, -1000,
-	-1000, -1000, -1000, -1000, 28, 4339, 3039, 511, -1000, -1000,
-	7369, 7369, -1000, -1000, -1000, -1000, 527, 60, -175, -1000,
-	-1000, 12184, 605, 527, 11708, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, 356, -1000, -1000, 11946, -1000, -1000, 429, -1000,
-	-1000, 505, -1000, 11708, -1000, -1000, 692, 238, 604, -1000,
-	828, -153, -178, 601, -1000, -1000, -1000, 689, -1000, -1000,
-	28, 845, -155, -1000, 824, -1000, 11708, -1000, 25, -1000,
-	-160, 488, 23, -176, 731, 687, -180, 730, -1000, 975,
-	7616, -1000, -1000, 982, 163, 163, 1161, 527, -1000, -1000,
-	-1000, 49, 378, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, 34, 756, -1000, -1000, -1000, -1000, 8, 17, 71,
+	-1000, 3197, -1000, 295, -1000, 459, 7531, -1000, -1000, -1000,
+	-1000, 859, 477, 477, 131, -1000, -1000, 12127, -1000, -1000,
+	-1000, -1000, 755, -1000, -1000, -1000, 3458, 6538, -1000, 391,
+	2062, 247, -1000, 8275, 8275, -1000, -1000, 640, 6538, 477,
+	-1000, -1000, -1000, 317, 443, 317, 8275, 8275, -1000, 8275,
+	8275, -1000, -152, 673, 237, -1000, 7531, 373, -1000, 4502,
+	-1000, 8275, 8275, -1000, -1000, -1000, -1000, 805, 12366, 720,
+	-1000, 9249, 11888, 709, -1000, 231, 916, 787, 800, 667,
+	-1000, -1000, -1000, -1000, 835, -1000, 819, -1000, -1000, -1000,
+	-1000, -1000, 101, 99, 90, 11888, -1000, 971, 7531, 690,
+	-1000, -1000, 187, -1000, -1000, -97, -118, -1000, -1000, -1000,
+	2936, -1000, 2936, 11888, 43, -1000, 491, 491, -1000, -1000,
+	-1000, 769, 797, 8275, -1000, -1000, -1000, 626, 165, 165,
+	-1000, 220, -1000, -1000, -1000, 623, -1000, 620, 726, 616,
+	12127, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, 12127, -1000,
+	-1000, -1000, -1000, -1000, 11888, -158, 487, 11888, 11888, 11888,
+	12127, -1000, 313, -1000, 477, -1000, 4241, -1000, 979, 10453,
+	-1000, -1000, 501, -1000, 8275, 2062, 2062, -1000, -1000, 501,
+	760, 760, -1000, 760, 766, -1000, 760, -5, 760, -6,
+	501, 501, 2180, 2033, 1987, 1863, 720, -147, -1000, 477,
+	7531, -1000, 1510, 1401, -1000, 942, 707, 713, -1000, -1000,
+	6290, 501, 610, 130, 604, -1000, 971, 12366, 7531, -1000,
+	-1000, 7531, 763, -1000, 7531, -1000, -1000, -1000, 720, 720,
+	720, 604, 965, 477, -1000, -1000, -1000, -1000, 2675, -1000,
+	600, -1000, 760, -1000, -1000, -1000, 11888, -47, 1018, 2062,
+	-1000, -1000, -1000, -1000, -1000, -24, 457, -24, 387, -1000,
+	384, 3197, -1000, -1000, -1000, -1000, 944, -1000, 4241, -1000,
+	-1000, 759, 792, -1000, -1000, -1000, 975, 724, -1000, 2062,
+	-1000, -1000, 110, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, 8275, 8275, 8275, 8275, 8275, 501, 450, 477, 8275,
+	8275, 935, -1000, 720, -1000, -1000, 719, 11888, 11888, -1000,
+	11888, 965, -1000, 477, 477, 11888, 477, 11888, 11888, 11888,
+	9010, -1000, 141, 11888, -1000, 547, -1000, 164, -1000, -156,
+	165, -1000, 165, 624, 606, -1000, 720, 717, -1000, 226,
+	11888, 12127, 973, 967, -1000, -1000, 333, 333, 333, 333,
+	30, -1000, -1000, 333, 333, 1016, -1000, 720, -1000, 765,
+	129, -1000, -1000, -1000, 544, 540, 540, 540, 155, 141,
+	-1000, 469, 225, 424, -1000, 39, 11888, 324, 928, -1000,
+	923, -1000, -1000, -1000, -1000, -1000, 33, 4241, 2936, 537,
+	-1000, -1000, 7531, 7531, -1000, -1000, -1000, -1000, 501, 56,
+	-169, -1000, -1000, 12366, 713, 501, 11888, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, 339, -1000, -1000, 12127, -1000, -1000,
+	343, -1000, -1000, 530, -1000, 11888, -1000, -1000, 756, 477,
+	694, -1000, 832, -155, -179, 681, -1000, -1000, -1000, 757,
+	-1000, -1000, 33, 886, -158, -1000, 823, -1000, 11888, -1000,
+	25, -1000, -167, 484, 23, -170, 796, 720, -182, 789,
+	-1000, 1001, 7779, -1000, -1000, 1012, 163, 163, 333, 501,
+	-1000, -1000, -1000, 52, 371, -1000, -1000, -1000, -1000, -1000,
+	-1000,
 }
 var yyPgo = [...]int{
 
-	0, 1201, 25, 508, 1200, 1199, 1198, 1196, 1195, 1194,
-	1191, 1190, 1188, 1187, 1186, 1185, 1184, 1181, 1179, 1178,
-	1177, 1176, 1175, 1174, 1172, 1171, 117, 1166, 1164, 1161,
-	71, 1159, 76, 1157, 1156, 49, 206, 54, 44, 314,
-	1154, 27, 89, 84, 1153, 40, 1152, 1151, 78, 1150,
-	1149, 55, 1148, 1147, 202, 1144, 73, 1143, 11, 56,
-	1132, 1131, 1130, 1127, 70, 862, 1126, 1123, 15, 1122,
-	1121, 102, 1120, 58, 7, 8, 34, 22, 1111, 123,
-	6, 1110, 57, 1109, 1104, 1103, 1102, 38, 1101, 60,
-	1098, 19, 59, 1096, 9, 66, 33, 28, 5, 79,
-	64, 1092, 16, 69, 47, 1091, 1089, 455, 1088, 1087,
-	45, 1086, 1084, 24, 1083, 185, 401, 1081, 1077, 1076,
-	1075, 42, 0, 545, 233, 75, 1074, 1073, 1071, 1478,
-	43, 53, 18, 1070, 52, 20, 41, 1068, 1066, 35,
-	1065, 1061, 1059, 1058, 1057, 1056, 1055, 23, 1049, 1044,
-	1043, 31, 21, 1042, 1040, 63, 30, 1039, 1038, 1037,
-	50, 65, 1034, 1033, 51, 48, 1029, 1027, 1014, 1013,
-	1009, 37, 10, 1008, 12, 1007, 13, 1006, 29, 1005,
-	4, 1004, 14, 1003, 3, 1002, 17, 46, 1, 1001,
-	2, 999, 997, 61, 529, 80, 996, 82,
+	0, 1255, 25, 523, 1254, 1253, 1249, 1248, 1247, 1246,
+	1245, 1244, 1242, 1241, 1240, 1239, 1238, 1233, 1232, 1230,
+	1227, 1226, 1225, 1223, 1221, 1220, 117, 1219, 1217, 1216,
+	76, 1213, 75, 1212, 1210, 40, 159, 54, 45, 843,
+	1209, 30, 83, 70, 1208, 35, 1206, 1204, 78, 1200,
+	1198, 58, 1195, 1194, 1033, 1193, 66, 1189, 13, 53,
+	1188, 1187, 1186, 1184, 73, 465, 1183, 1181, 14, 1180,
+	1178, 110, 1174, 50, 8, 17, 33, 18, 1173, 948,
+	7, 1171, 52, 1169, 1164, 1158, 1157, 20, 1154, 65,
+	1153, 22, 59, 1152, 9, 60, 38, 23, 10, 79,
+	64, 1147, 24, 69, 48, 1145, 1143, 574, 1142, 1141,
+	55, 1140, 1138, 28, 1136, 183, 468, 1135, 1134, 1132,
+	1131, 42, 0, 569, 140, 71, 1129, 1126, 1125, 1372,
+	44, 49, 19, 1124, 51, 176, 43, 1123, 1122, 41,
+	1116, 1114, 1108, 1106, 1101, 1098, 1094, 21, 1093, 1090,
+	1086, 212, 31, 1085, 1082, 63, 27, 1080, 1078, 1076,
+	47, 57, 1074, 1073, 56, 29, 1072, 1071, 1070, 1067,
+	1066, 34, 12, 1062, 15, 1060, 11, 1059, 37, 1058,
+	3, 1057, 16, 1056, 5, 1055, 6, 46, 1, 1049,
+	2, 1043, 1039, 61, 4, 80, 1031, 103,
 }
 var yyR1 = [...]int{
 
@@ -2151,47 +2173,47 @@ var yyR1 = [...]int{
 	171, 171, 172, 172, 172, 12, 12, 12, 12, 12,
 	12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
 	187, 187, 187, 187, 187, 187, 187, 187, 187, 187,
-	187, 181, 179, 179, 180, 180, 13, 18, 18, 14,
-	14, 14, 14, 14, 15, 15, 19, 20, 20, 20,
+	187, 187, 181, 179, 179, 180, 180, 13, 18, 18,
+	14, 14, 14, 14, 14, 15, 15, 19, 20, 20,
 	20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
 	20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
-	20, 20, 20, 20, 20, 111, 111, 109, 109, 112,
-	112, 110, 110, 110, 113, 113, 113, 114, 114, 138,
-	138, 138, 21, 21, 23, 23, 24, 25, 22, 22,
-	22, 22, 22, 22, 22, 16, 196, 26, 27, 27,
-	28, 28, 28, 32, 32, 32, 30, 30, 31, 31,
-	37, 37, 36, 36, 38, 38, 38, 38, 126, 126,
-	126, 125, 125, 40, 40, 41, 41, 42, 42, 43,
-	43, 43, 43, 57, 57, 94, 94, 96, 96, 44,
-	44, 44, 44, 45, 45, 46, 46, 47, 47, 133,
-	133, 132, 132, 132, 131, 131, 50, 50, 50, 52,
-	51, 51, 51, 51, 53, 53, 55, 55, 54, 54,
-	56, 58, 58, 58, 58, 59, 59, 39, 39, 39,
-	39, 39, 39, 39, 108, 108, 61, 61, 60, 60,
-	60, 60, 60, 60, 60, 60, 60, 60, 72, 72,
-	72, 72, 72, 72, 62, 62, 62, 62, 62, 62,
-	62, 35, 35, 73, 73, 73, 79, 74, 74, 65,
+	20, 20, 20, 20, 20, 20, 111, 111, 109, 109,
+	112, 112, 110, 110, 110, 113, 113, 113, 114, 114,
+	138, 138, 138, 21, 21, 23, 23, 24, 25, 22,
+	22, 22, 22, 22, 22, 22, 16, 196, 26, 27,
+	27, 28, 28, 28, 32, 32, 32, 30, 30, 31,
+	31, 37, 37, 36, 36, 38, 38, 38, 38, 126,
+	126, 126, 125, 125, 40, 40, 41, 41, 42, 42,
+	43, 43, 43, 43, 57, 57, 94, 94, 96, 96,
+	44, 44, 44, 44, 45, 45, 46, 46, 47, 47,
+	133, 133, 132, 132, 132, 131, 131, 50, 50, 50,
+	52, 51, 51, 51, 51, 53, 53, 55, 55, 54,
+	54, 56, 58, 58, 58, 58, 59, 59, 39, 39,
+	39, 39, 39, 39, 39, 108, 108, 61, 61, 60,
+	60, 60, 60, 60, 60, 60, 60, 60, 60, 72,
+	72, 72, 72, 72, 72, 62, 62, 62, 62, 62,
+	62, 62, 35, 35, 73, 73, 73, 79, 74, 74,
 	65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
 	65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
 	65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
-	65, 69, 69, 69, 67, 67, 67, 67, 67, 67,
-	67, 67, 67, 67, 67, 67, 67, 68, 68, 68,
+	65, 65, 69, 69, 69, 67, 67, 67, 67, 67,
+	67, 67, 67, 67, 67, 67, 67, 67, 68, 68,
 	68, 68, 68, 68, 68, 68, 68, 68, 68, 68,
-	68, 68, 68, 197, 197, 71, 70, 70, 70, 70,
-	70, 70, 33, 33, 33, 33, 33, 136, 136, 139,
+	68, 68, 68, 68, 197, 197, 71, 70, 70, 70,
+	70, 70, 70, 33, 33, 33, 33, 33, 136, 136,
 	139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
-	139, 139, 83, 83, 34, 34, 81, 81, 82, 84,
-	84, 80, 80, 80, 64, 64, 64, 64, 64, 64,
-	64, 64, 66, 66, 66, 85, 85, 86, 86, 87,
-	87, 88, 88, 89, 90, 90, 90, 91, 91, 91,
-	91, 92, 92, 92, 63, 63, 63, 63, 63, 63,
-	93, 93, 93, 93, 97, 97, 75, 75, 77, 77,
-	76, 78, 98, 98, 102, 99, 99, 103, 103, 103,
-	103, 101, 101, 101, 128, 128, 128, 106, 106, 115,
-	115, 116, 116, 107, 107, 117, 117, 117, 117, 117,
-	117, 117, 117, 117, 117, 118, 118, 118, 119, 119,
-	120, 120, 120, 127, 127, 123, 123, 124, 124, 129,
-	129, 130, 130, 121, 121, 121, 121, 121, 121, 121,
+	139, 139, 139, 83, 83, 34, 34, 81, 81, 82,
+	84, 84, 80, 80, 80, 64, 64, 64, 64, 64,
+	64, 64, 64, 66, 66, 66, 85, 85, 86, 86,
+	87, 87, 88, 88, 89, 90, 90, 90, 91, 91,
+	91, 91, 92, 92, 92, 63, 63, 63, 63, 63,
+	63, 93, 93, 93, 93, 97, 97, 75, 75, 77,
+	77, 76, 78, 98, 98, 102, 99, 99, 103, 103,
+	103, 103, 101, 101, 101, 128, 128, 128, 106, 106,
+	115, 115, 116, 116, 107, 107, 117, 117, 117, 117,
+	117, 117, 117, 117, 117, 117, 118, 118, 118, 119,
+	119, 120, 120, 120, 127, 127, 123, 123, 124, 124,
+	129, 129, 130, 130, 121, 121, 121, 121, 121, 121,
 	121, 121, 121, 121, 121, 121, 121, 121, 121, 121,
 	121, 121, 121, 121, 121, 121, 121, 121, 121, 121,
 	121, 121, 121, 121, 121, 121, 121, 121, 121, 121,
@@ -2200,7 +2222,8 @@ var yyR1 = [...]int{
 	121, 121, 121, 121, 121, 121, 121, 121, 121, 121,
 	121, 121, 121, 121, 121, 121, 121, 121, 121, 121,
 	121, 121, 121, 121, 121, 121, 121, 121, 121, 121,
-	121, 121, 121, 121, 121, 121, 121, 121, 122, 122,
+	121, 121, 121, 121, 121, 121, 121, 121, 121, 122,
+	122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
 	122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
 	122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
 	122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
@@ -2211,8 +2234,7 @@ var yyR1 = [...]int{
 	122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
 	122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
 	122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
-	122, 122, 122, 122, 122, 122, 122, 122, 122, 193,
-	194, 134, 135, 135, 135,
+	122, 193, 194, 134, 135, 135, 135,
 }
 var yyR2 = [...]int{
 
@@ -2240,46 +2262,46 @@ var yyR2 = [...]int{
 	2, 3, 1, 1, 1, 6, 7, 7, 7, 7,
 	4, 5, 7, 5, 5, 5, 12, 7, 5, 9,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-	1, 7, 1, 3, 8, 8, 3, 3, 5, 4,
-	6, 5, 4, 4, 3, 2, 3, 4, 4, 3,
-	4, 4, 4, 4, 4, 4, 3, 2, 3, 3,
-	2, 3, 4, 3, 7, 5, 4, 2, 4, 4,
-	3, 3, 5, 2, 3, 1, 1, 0, 1, 1,
-	1, 0, 2, 2, 0, 2, 2, 0, 2, 0,
-	1, 1, 2, 1, 1, 2, 1, 1, 2, 2,
-	2, 2, 2, 3, 3, 2, 0, 2, 0, 2,
-	1, 2, 2, 0, 1, 1, 0, 1, 0, 1,
-	0, 1, 1, 3, 1, 2, 3, 5, 0, 1,
-	2, 1, 1, 0, 2, 1, 3, 1, 1, 1,
-	3, 1, 3, 3, 7, 1, 3, 1, 3, 4,
-	4, 4, 3, 2, 4, 0, 1, 0, 2, 0,
-	1, 0, 1, 2, 1, 1, 1, 2, 2, 1,
-	2, 3, 2, 3, 2, 2, 2, 1, 1, 3,
-	3, 0, 5, 5, 5, 0, 2, 1, 3, 3,
-	2, 3, 1, 2, 0, 3, 1, 1, 3, 3,
-	4, 4, 5, 3, 4, 5, 6, 2, 1, 2,
-	1, 2, 1, 2, 1, 1, 1, 1, 1, 1,
-	1, 0, 2, 1, 1, 1, 3, 1, 3, 1,
-	1, 1, 1, 1, 3, 3, 3, 3, 3, 3,
-	3, 3, 3, 3, 3, 3, 3, 3, 3, 2,
-	2, 2, 2, 2, 2, 2, 3, 1, 1, 1,
-	1, 4, 5, 6, 4, 4, 6, 6, 6, 8,
-	8, 8, 8, 9, 7, 5, 4, 2, 2, 2,
+	1, 1, 7, 1, 3, 8, 8, 3, 3, 5,
+	4, 6, 5, 4, 4, 3, 2, 3, 4, 4,
+	3, 4, 4, 4, 4, 4, 4, 3, 2, 3,
+	3, 2, 3, 4, 3, 7, 5, 4, 2, 4,
+	4, 3, 3, 5, 2, 3, 1, 1, 0, 1,
+	1, 1, 0, 2, 2, 0, 2, 2, 0, 2,
+	0, 1, 1, 2, 1, 1, 2, 1, 1, 2,
+	2, 2, 2, 2, 3, 3, 2, 0, 2, 0,
+	2, 1, 2, 2, 0, 1, 1, 0, 1, 0,
+	1, 0, 1, 1, 3, 1, 2, 3, 5, 0,
+	1, 2, 1, 1, 0, 2, 1, 3, 1, 1,
+	1, 3, 1, 3, 3, 7, 1, 3, 1, 3,
+	4, 4, 4, 3, 2, 4, 0, 1, 0, 2,
+	0, 1, 0, 1, 2, 1, 1, 1, 2, 2,
+	1, 2, 3, 2, 3, 2, 2, 2, 1, 1,
+	3, 3, 0, 5, 5, 5, 0, 2, 1, 3,
+	3, 2, 3, 1, 2, 0, 3, 1, 1, 3,
+	3, 4, 4, 5, 3, 4, 5, 6, 2, 1,
+	2, 1, 2, 1, 2, 1, 1, 1, 1, 1,
+	1, 1, 0, 2, 1, 1, 1, 3, 1, 3,
+	1, 1, 1, 1, 1, 3, 3, 3, 3, 3,
+	3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+	2, 2, 2, 2, 2, 2, 2, 3, 1, 1,
+	1, 1, 4, 5, 6, 4, 4, 6, 6, 6,
+	8, 8, 8, 8, 9, 7, 5, 4, 2, 2,
 	2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-	2, 8, 8, 0, 2, 3, 4, 4, 4, 4,
-	4, 4, 0, 3, 4, 7, 3, 1, 1, 2,
-	3, 3, 1, 2, 2, 1, 2, 1, 2, 2,
-	1, 2, 0, 1, 0, 2, 1, 2, 4, 0,
-	2, 1, 3, 5, 1, 1, 1, 1, 1, 1,
-	1, 1, 1, 2, 2, 0, 3, 0, 2, 0,
-	3, 1, 3, 2, 0, 1, 1, 0, 2, 4,
-	4, 0, 2, 4, 2, 1, 3, 5, 4, 6,
-	1, 3, 3, 5, 0, 5, 1, 3, 1, 2,
-	3, 1, 1, 3, 3, 1, 3, 3, 3, 3,
-	3, 1, 2, 1, 1, 1, 1, 1, 1, 0,
-	2, 0, 3, 0, 1, 1, 1, 1, 1, 1,
-	1, 1, 1, 1, 1, 0, 1, 1, 1, 1,
-	0, 1, 1, 0, 2, 1, 1, 1, 1, 1,
+	2, 2, 8, 8, 0, 2, 3, 4, 4, 4,
+	4, 4, 4, 0, 3, 4, 7, 3, 1, 1,
+	2, 3, 3, 1, 2, 2, 1, 2, 1, 2,
+	2, 1, 2, 0, 1, 0, 2, 1, 2, 4,
+	0, 2, 1, 3, 5, 1, 1, 1, 1, 1,
+	1, 1, 1, 1, 2, 2, 0, 3, 0, 2,
+	0, 3, 1, 3, 2, 0, 1, 1, 0, 2,
+	4, 4, 0, 2, 4, 2, 1, 3, 5, 4,
+	6, 1, 3, 3, 5, 0, 5, 1, 3, 1,
+	2, 3, 1, 1, 3, 3, 1, 3, 3, 3,
+	3, 3, 1, 2, 1, 1, 1, 1, 1, 1,
+	0, 2, 0, 3, 0, 1, 1, 1, 1, 1,
+	1, 1, 1, 1, 1, 1, 0, 1, 1, 1,
+	1, 0, 1, 1, 0, 2, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
@@ -2301,192 +2323,193 @@ 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, 0, 0, 1, 1,
+	1, 1, 1, 0, 0, 1, 1,
 }
 var yyChk = [...]int{
 
 	-1000, -191, -1, -2, -6, -7, -8, -9, -10, -11,
 	-12, -13, -14, -15, -19, -20, -21, -23, -24, -25,
 	-22, -16, -3, -4, 6, 7, -29, 9, 10, 30,
-	-17, 115, 116, 118, 117, 149, 119, 142, 50, 163,
-	164, 166, 167, 25, 143, 144, 147, 148, 31, 32,
-	121, -193, 8, 248, 54, -192, 265, -87, 15, -28,
+	-17, 115, 116, 118, 117, 150, 119, 143, 50, 164,
+	165, 167, 168, 25, 144, 145, 148, 149, 31, 32,
+	121, -193, 8, 249, 54, -192, 266, -87, 15, -28,
 	5, -26, -196, -26, -26, -26, -26, -26, -167, -169,
-	54, 90, -120, 125, 72, 240, 122, 123, 129, -123,
-	57, -122, 258, 135, 163, 174, 168, 195, 187, 259,
-	136, 185, 188, 227, 215, 222, 66, 166, 236, 145,
-	183, 179, 177, 27, 224, 200, 263, 178, 223, 121,
-	138, 133, 201, 205, 228, 172, 173, 230, 199, 134,
-	33, 260, 35, 153, 231, 203, 198, 194, 197, 171,
-	193, 39, 207, 206, 208, 226, 190, 139, 180, 18,
-	234, 148, 151, 225, 202, 204, 130, 155, 262, 232,
-	176, 140, 152, 147, 235, 141, 167, 162, 229, 238,
-	38, 212, 170, 132, 164, 159, 217, 191, 154, 181,
-	182, 196, 169, 192, 165, 156, 149, 237, 213, 264,
-	189, 186, 160, 157, 158, 218, 219, 161, 261, 233,
-	184, 214, -107, 125, 219, 127, 123, 123, 124, 125,
-	240, 122, 123, -54, -129, 57, -122, 125, 123, 108,
-	188, 227, 115, 216, 224, 124, 33, 225, 155, -138,
-	123, -109, 215, 218, 219, 161, 57, 229, 228, 220,
-	-129, 165, -134, -134, -134, -134, -134, 217, 217, -134,
-	-2, -91, 17, 16, -5, -3, -193, 6, 20, 21,
-	-32, 40, 41, -27, -38, 99, -39, -129, -60, 74,
-	-65, 29, 57, -122, 23, -64, -61, -80, -78, -79,
-	108, 109, 110, 97, 98, 105, 75, 111, -69, -67,
-	-68, -70, 59, 58, 67, 60, 61, 62, 63, 68,
-	69, 70, -123, -76, -193, 44, 45, 249, 250, 251,
-	252, 257, 253, 77, 34, 239, 247, 246, 245, 243,
-	244, 241, 242, 255, 256, 128, 240, 103, 248, -107,
-	-107, 11, -48, -49, -54, -56, -129, -99, -137, 165,
-	-103, 229, 228, -124, -101, -123, -121, 227, 188, 226,
-	120, 73, 22, 24, 210, 76, 108, 16, 77, 107,
-	249, 115, 48, 241, 242, 239, 251, 252, 240, 216,
-	29, 10, 25, 143, 21, 101, 117, 80, 81, 146,
-	23, 144, 70, 19, 51, 11, 13, 14, 128, 127,
-	92, 124, 46, 8, 111, 26, 89, 42, 28, 44,
-	90, 17, 243, 244, 31, 257, 150, 103, 49, 36,
-	74, 68, 71, 52, 72, 15, 47, 91, 118, 248,
-	45, 122, 6, 254, 30, 142, 43, 123, 79, 255,
-	256, 126, 69, 5, 129, 32, 9, 50, 53, 245,
-	246, 247, 34, 78, 12, -168, 90, -161, 57, -54,
-	124, -54, 248, -116, 128, -116, -116, 123, -54, 115,
-	117, 120, 52, -18, -54, -115, 128, 57, -115, -115,
-	-115, -54, 112, -54, 57, 30, -135, -193, -124, 240,
-	57, 155, 123, 156, 125, -135, -135, -135, -135, 159,
-	160, -135, -112, -111, 222, 223, 217, 221, 12, 160,
-	217, 158, -135, -134, -134, -194, 56, -92, 19, 31,
-	-39, -129, -88, -89, -39, -87, -2, -26, 36, -30,
-	21, 65, 11, -126, 73, 72, 89, -125, 22, -123,
-	59, 112, -39, -62, 92, 74, 90, 91, 76, 94,
-	93, 104, 97, 98, 99, 100, 101, 102, 103, 95,
-	96, 107, 82, 83, 84, 85, 86, 87, 88, -108,
-	-193, -79, -193, 113, 114, -65, -65, -65, -65, -65,
-	-65, -65, -65, -193, -2, -74, -39, -193, -193, -193,
-	-193, -193, -193, -193, -193, -193, -83, -39, -193, -197,
-	-71, -193, -197, -71, -197, -71, -197, -193, -197, -71,
-	-197, -71, -197, -197, -71, -193, -193, -193, -193, -193,
-	-193, -55, 26, -54, -41, -42, -43, -44, -57, -79,
-	-193, -54, -54, -48, -195, 55, 11, 53, -195, 55,
-	112, 55, -99, 165, -100, -104, 230, 232, 82, -128,
-	-123, 59, 29, 30, 56, 55, -54, -140, -143, -145,
-	-144, -146, -141, -142, 185, 186, 108, 189, 191, 192,
-	193, 194, 195, 196, 197, 198, 199, 200, 30, 145,
-	181, 182, 183, 184, 201, 202, 203, 204, 205, 206,
-	207, 208, 168, 187, 259, 169, 170, 171, 172, 173,
-	174, 176, 177, 178, 179, 180, 57, -135, 125, 57,
-	74, 57, -54, -54, -135, 157, 157, 123, 123, 162,
-	-54, 55, 126, -48, 23, 52, -54, 57, 57, -130,
-	-129, -121, -135, -135, -135, -135, -135, -54, -135, -135,
-	-135, -135, 11, -110, 11, 92, -39, -114, 90, 52,
-	9, 92, 55, 18, 112, 55, -90, 24, 25, -91,
-	-194, -32, -66, -123, 60, 63, -31, 43, -54, -39,
-	-39, -72, 68, 74, 69, 70, -125, 99, -130, -124,
-	-121, -65, -73, -76, -79, 64, 92, 90, 91, 76,
-	-65, -65, -65, -65, -65, -65, -65, -65, -65, -65,
-	-65, -65, -65, -65, -65, -136, 57, 59, 57, -64,
-	-64, -123, -37, 21, -36, -38, -194, 55, -194, -2,
-	-36, -36, -39, -39, -80, 59, -36, -80, 59, -36,
-	-36, -30, -81, -82, 78, -80, -123, -129, -194, -65,
-	-123, -123, -36, -37, -36, -36, -95, 151, -54, 30,
-	55, -50, -52, -51, -53, 42, 46, 48, 43, 44,
-	45, 49, -133, 22, -41, -193, -132, 151, -131, 22,
-	-129, 59, -95, 53, -41, -54, -41, -56, -129, 99,
-	-103, -100, 55, 231, 233, 234, 52, 71, -39, -152,
-	107, -170, -171, -172, -124, 59, 60, -161, -162, -163,
-	-173, 137, -178, 130, 132, 129, -164, 138, 124, 28,
-	56, -157, 68, 74, -153, 213, -147, 54, -147, -147,
-	-147, -147, -151, 188, -151, -151, -151, 54, 54, -147,
-	-147, -147, -155, 54, -155, -155, -156, 54, -156, -127,
-	53, -54, -135, 23, -135, -117, 120, 117, 118, -181,
-	116, 210, 188, 66, 29, 15, 249, 151, 264, 57,
-	152, -54, -54, -54, -54, -54, 120, 117, -54, -54,
-	-54, -135, -54, -113, 90, 12, -129, -129, 59, -54,
-	38, -39, -39, -130, -89, -92, -106, 19, 11, 34,
-	34, -36, 68, 69, 70, 112, -193, -73, -65, -65,
-	-65, -35, 146, 73, -194, -194, -36, 55, -39, -194,
-	-194, -194, 55, 53, 22, 11, 11, -194, 11, 11,
-	-194, -194, -36, -84, -82, 80, -39, -194, 112, -194,
-	55, 55, -194, -194, -194, -194, -63, 30, 34, -2,
-	-193, -193, -98, -102, -80, -42, -43, -43, -42, -43,
-	42, 42, 42, 47, 42, 47, 42, -51, -129, -194,
-	-58, 50, 127, 51, -193, -131, -59, 12, -41, -59,
-	-59, 112, -104, -105, 235, 232, 238, 57, 59, 55,
-	-172, 82, 54, 57, 28, -164, -164, -165, 57, -165,
-	28, -149, 29, 68, -154, 214, 60, -151, -151, -152,
-	30, -152, -152, -152, -160, 59, -160, 60, 60, 52,
-	-123, -135, -134, -187, 131, 137, 138, 133, 57, 124,
-	28, 130, 132, 151, 129, -187, -118, -119, 126, 22,
-	124, 28, 151, -186, 53, 157, 210, 157, 126, -135,
-	-110, 59, -39, 39, 112, -54, -40, 11, 99, -124,
-	-37, -35, 73, -65, -65, -194, -38, -139, 108, 185,
-	145, 183, 179, 199, 190, 212, 181, 213, -136, -139,
-	-65, -65, -65, -65, 258, -87, 81, -39, 79, -124,
-	-65, -65, -97, 52, -98, -75, -77, -76, -193, -2,
-	-93, -123, -96, -123, -59, 55, 82, -46, -45, 52,
-	53, -47, 52, -45, 42, 42, 124, 124, 124, -96,
-	-87, -39, -59, 232, 236, 237, -171, -172, -175, -174,
-	-123, -178, -165, -165, 54, -150, 52, -65, 56, -152,
-	-152, 57, 108, 56, 55, 56, 55, 56, 55, -54,
-	-134, -134, -54, -134, -123, -184, 261, -185, 57, -123,
-	-123, -123, -54, -113, -59, -41, -194, -65, -194, -147,
-	-147, -147, -156, -147, 173, -147, 173, -194, -194, 19,
-	19, 19, 19, -193, -34, 254, -39, 55, 55, 27,
-	-97, 55, -194, -194, -194, 55, 112, -194, 55, -87,
-	-102, -39, -39, 54, -39, -193, -193, -193, -194, -91,
-	56, 55, -147, -94, -123, -158, 210, 9, -151, 59,
-	-151, 60, 60, -135, 26, -183, -182, -124, 54, 53,
-	-85, 13, -151, 57, -65, -65, -65, -65, -65, -194,
-	59, -65, -65, 28, -77, 34, -2, -193, -123, -123,
-	-123, -91, -94, -94, -94, -94, -132, -177, -176, 53,
-	134, 66, -174, 56, 55, -159, 130, 28, 129, -68,
-	-152, -152, 56, 56, -193, 55, 82, -94, -54, -86,
-	14, 16, -194, -194, -194, -194, -33, 92, 261, -194,
-	-194, 9, -75, -2, 112, 56, -194, -194, -194, -58,
-	-176, 57, -166, 82, 59, 140, -123, -148, 66, 28,
-	28, -179, -180, 151, -182, -172, 56, -39, -74, -194,
-	259, 49, 262, -98, -194, -123, 60, -54, 59, -194,
-	55, -123, -186, 39, 260, 263, 54, -180, 34, -184,
-	39, -94, 153, 261, 56, 154, 262, -189, -190, 52,
-	-193, 263, -190, 52, 10, 9, -65, 150, -188, 141,
-	136, 139, 30, -188, -194, -194, 135, 29, 68,
+	54, 90, -120, 125, 72, 241, 122, 123, 129, -123,
+	57, -122, 259, 136, 164, 175, 169, 196, 188, 260,
+	137, 186, 189, 228, 135, 216, 223, 66, 167, 237,
+	146, 184, 180, 178, 27, 225, 201, 264, 179, 224,
+	121, 139, 133, 202, 206, 229, 173, 174, 231, 200,
+	134, 33, 261, 35, 154, 232, 204, 199, 195, 198,
+	172, 194, 39, 208, 207, 209, 227, 191, 140, 181,
+	18, 235, 149, 152, 226, 203, 205, 130, 156, 263,
+	233, 177, 141, 153, 148, 236, 142, 168, 163, 230,
+	239, 38, 213, 171, 132, 165, 160, 218, 192, 155,
+	182, 183, 197, 170, 193, 166, 157, 150, 238, 214,
+	265, 190, 187, 161, 158, 159, 219, 220, 162, 262,
+	234, 185, 215, -107, 125, 220, 127, 123, 123, 124,
+	125, 241, 122, 123, -54, -129, 57, -122, 125, 123,
+	108, 189, 228, 115, 217, 225, 124, 33, 226, 156,
+	-138, 123, -109, 216, 219, 220, 162, 57, 230, 229,
+	221, -129, 166, -134, -134, -134, -134, -134, 218, 218,
+	-134, -2, -91, 17, 16, -5, -3, -193, 6, 20,
+	21, -32, 40, 41, -27, -38, 99, -39, -129, -60,
+	74, -65, 29, 57, -122, 23, -64, -61, -80, -78,
+	-79, 108, 109, 110, 97, 98, 105, 75, 111, -69,
+	-67, -68, -70, 59, 58, 67, 60, 61, 62, 63,
+	68, 69, 70, -123, -76, -193, 44, 45, 250, 251,
+	252, 253, 258, 254, 77, 34, 240, 248, 247, 246,
+	244, 245, 242, 243, 256, 257, 128, 241, 103, 249,
+	-107, -107, 11, -48, -49, -54, -56, -129, -99, -137,
+	166, -103, 230, 229, -124, -101, -123, -121, 228, 189,
+	227, 120, 73, 22, 24, 211, 76, 108, 16, 77,
+	107, 250, 115, 48, 242, 243, 240, 252, 253, 241,
+	217, 29, 10, 25, 144, 21, 101, 117, 80, 81,
+	147, 23, 145, 70, 19, 51, 11, 13, 14, 128,
+	127, 92, 124, 46, 8, 111, 26, 89, 42, 28,
+	44, 90, 17, 244, 245, 31, 258, 151, 103, 49,
+	36, 74, 68, 71, 52, 72, 15, 47, 91, 118,
+	249, 45, 122, 6, 255, 30, 143, 43, 123, 79,
+	256, 257, 126, 69, 5, 129, 32, 9, 50, 53,
+	246, 247, 248, 34, 78, 12, -168, 90, -161, 57,
+	-54, 124, -54, 249, -116, 128, -116, -116, 123, -54,
+	115, 117, 120, 52, -18, -54, -115, 128, 57, -115,
+	-115, -115, -54, 112, -54, 57, 30, -135, -193, -124,
+	241, 57, 156, 123, 157, 125, -135, -135, -135, -135,
+	160, 161, -135, -112, -111, 223, 224, 218, 222, 12,
+	161, 218, 159, -135, -134, -134, -194, 56, -92, 19,
+	31, -39, -129, -88, -89, -39, -87, -2, -26, 36,
+	-30, 21, 65, 11, -126, 73, 72, 89, -125, 22,
+	-123, 59, 112, -39, -62, 92, 74, 90, 91, 76,
+	94, 93, 104, 97, 98, 99, 100, 101, 102, 103,
+	95, 96, 107, 82, 83, 84, 85, 86, 87, 88,
+	-108, -193, -79, -193, 113, 114, -65, -65, -65, -65,
+	-65, -65, -65, -65, -193, -2, -74, -39, -193, -193,
+	-193, -193, -193, -193, -193, -193, -193, -83, -39, -193,
+	-197, -71, -193, -197, -71, -197, -71, -197, -193, -197,
+	-71, -197, -71, -197, -197, -71, -193, -193, -193, -193,
+	-193, -193, -55, 26, -54, -41, -42, -43, -44, -57,
+	-79, -193, -54, -54, -48, -195, 55, 11, 53, -195,
+	55, 112, 55, -99, 166, -100, -104, 231, 233, 82,
+	-128, -123, 59, 29, 30, 56, 55, -54, -140, -143,
+	-145, -144, -146, -141, -142, 186, 187, 108, 190, 192,
+	193, 194, 195, 196, 197, 198, 199, 200, 201, 30,
+	146, 182, 183, 184, 185, 202, 203, 204, 205, 206,
+	207, 208, 209, 169, 188, 260, 170, 171, 172, 173,
+	174, 175, 177, 178, 179, 180, 181, 57, -135, 125,
+	57, 74, 57, -54, -54, -135, 158, 158, 123, 123,
+	163, -54, 55, 126, -48, 23, 52, -54, 57, 57,
+	-130, -129, -121, -135, -135, -135, -135, -135, -54, -135,
+	-135, -135, -135, 11, -110, 11, 92, -39, -114, 90,
+	52, 9, 92, 55, 18, 112, 55, -90, 24, 25,
+	-91, -194, -32, -66, -123, 60, 63, -31, 43, -54,
+	-39, -39, -72, 68, 74, 69, 70, -125, 99, -130,
+	-124, -121, -65, -73, -76, -79, 64, 92, 90, 91,
+	76, -65, -65, -65, -65, -65, -65, -65, -65, -65,
+	-65, -65, -65, -65, -65, -65, -136, 57, 59, 57,
+	-64, -64, -123, -37, 21, -36, -38, -194, 55, -194,
+	-2, -36, -36, -39, -39, -80, 59, -36, -80, 59,
+	-36, -36, -30, -81, -82, 78, -80, -123, -129, -194,
+	-65, -123, -123, -36, -37, -36, -36, -95, 152, -54,
+	30, 55, -50, -52, -51, -53, 42, 46, 48, 43,
+	44, 45, 49, -133, 22, -41, -193, -132, 152, -131,
+	22, -129, 59, -95, 53, -41, -54, -41, -56, -129,
+	99, -103, -100, 55, 232, 234, 235, 52, 71, -39,
+	-152, 107, -170, -171, -172, -124, 59, 60, -161, -162,
+	-163, -173, 138, -178, 130, 132, 129, -164, 139, 124,
+	28, 56, -157, 68, 74, -153, 214, -147, 54, -147,
+	-147, -147, -147, -151, 189, -151, -151, -151, 54, 54,
+	-147, -147, -147, -155, 54, -155, -155, -156, 54, -156,
+	-127, 53, -54, -135, 23, -135, -117, 120, 117, 118,
+	-181, 116, 211, 189, 66, 29, 15, 250, 152, 265,
+	57, 153, -54, -54, -54, -54, -54, 120, 117, -54,
+	-54, -54, -135, -54, -113, 90, 12, -129, -129, 59,
+	-54, 38, -39, -39, -130, -89, -92, -106, 19, 11,
+	34, 34, -36, 68, 69, 70, 112, -193, -73, -65,
+	-65, -65, -35, 147, 73, -194, -194, -36, 55, -39,
+	-194, -194, -194, 55, 53, 22, 11, 11, -194, 11,
+	11, -194, -194, -36, -84, -82, 80, -39, -194, 112,
+	-194, 55, 55, -194, -194, -194, -194, -63, 30, 34,
+	-2, -193, -193, -98, -102, -80, -42, -43, -43, -42,
+	-43, 42, 42, 42, 47, 42, 47, 42, -51, -129,
+	-194, -58, 50, 127, 51, -193, -131, -59, 12, -41,
+	-59, -59, 112, -104, -105, 236, 233, 239, 57, 59,
+	55, -172, 82, 54, 57, 28, -164, -164, -165, 57,
+	-165, 28, -149, 29, 68, -154, 215, 60, -151, -151,
+	-152, 30, -152, -152, -152, -160, 59, -160, 60, 60,
+	52, -123, -135, -134, -187, 135, 131, 138, 139, 133,
+	57, 124, 28, 130, 132, 152, 129, -187, -118, -119,
+	126, 22, 124, 28, 152, -186, 53, 158, 211, 158,
+	126, -135, -110, 59, -39, 39, 112, -54, -40, 11,
+	99, -124, -37, -35, 73, -65, -65, -194, -38, -139,
+	108, 186, 146, 184, 180, 200, 191, 213, 182, 214,
+	-136, -139, -65, -65, -65, -65, 259, -87, 81, -39,
+	79, -124, -65, -65, -97, 52, -98, -75, -77, -76,
+	-193, -2, -93, -123, -96, -123, -59, 55, 82, -46,
+	-45, 52, 53, -47, 52, -45, 42, 42, 124, 124,
+	124, -96, -87, -39, -59, 233, 237, 238, -171, -172,
+	-175, -174, -123, -178, -165, -165, 54, -150, 52, -65,
+	56, -152, -152, 57, 108, 56, 55, 56, 55, 56,
+	55, -54, -134, -134, -54, -134, -123, -184, 262, -185,
+	57, -123, -123, -123, -54, -113, -59, -41, -194, -65,
+	-194, -147, -147, -147, -156, -147, 174, -147, 174, -194,
+	-194, 19, 19, 19, 19, -193, -34, 255, -39, 55,
+	55, 27, -97, 55, -194, -194, -194, 55, 112, -194,
+	55, -87, -102, -39, -39, 54, -39, -193, -193, -193,
+	-194, -91, 56, 55, -147, -94, -123, -158, 211, 9,
+	-151, 59, -151, 60, 60, -135, 26, -183, -182, -124,
+	54, 53, -85, 13, -151, 57, -65, -65, -65, -65,
+	-65, -194, 59, -65, -65, 28, -77, 34, -2, -193,
+	-123, -123, -123, -91, -94, -94, -94, -94, -132, -177,
+	-176, 53, 134, 66, -174, 56, 55, -159, 130, 28,
+	129, -68, -152, -152, 56, 56, -193, 55, 82, -94,
+	-54, -86, 14, 16, -194, -194, -194, -194, -33, 92,
+	262, -194, -194, 9, -75, -2, 112, 56, -194, -194,
+	-194, -58, -176, 57, -166, 82, 59, 141, -123, -148,
+	66, 28, 28, -179, -180, 152, -182, -172, 56, -39,
+	-74, -194, 260, 49, 263, -98, -194, -123, 60, -54,
+	59, -194, 55, -123, -186, 39, 261, 264, 54, -180,
+	34, -184, 39, -94, 154, 262, 56, 155, 263, -189,
+	-190, 52, -193, 264, -190, 52, 10, 9, -65, 151,
+	-188, 142, 137, 140, 30, -188, -194, -194, 136, 29,
+	68,
 }
 var yyDef = [...]int{
 
 	23, -2, 2, -2, 5, 6, 7, 8, 9, 10,
 	11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
-	21, 22, 559, 0, 316, 316, 316, 316, 316, 316,
-	0, 630, 613, 0, 0, 0, 0, -2, 303, 304,
-	0, 306, 307, 851, 851, 851, 851, 851, 0, 0,
-	851, 0, 35, 36, 849, 1, 3, 567, 0, 0,
-	320, 323, 318, 0, 613, 613, 0, 0, 65, 66,
-	0, 0, 0, 839, 0, 611, 611, 611, 631, 632,
-	635, 636, 738, 739, 740, 741, 742, 743, 744, 745,
-	746, 747, 748, 749, 750, 751, 752, 753, 754, 755,
-	756, 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, 788, 789, 790, 791, 792, 793, 794, 795,
-	796, 797, 798, 799, 800, 801, 802, 803, 804, 805,
-	806, 807, 808, 809, 810, 811, 812, 813, 814, 815,
-	816, 817, 818, 819, 820, 821, 822, 823, 824, 825,
-	826, 827, 828, 829, 830, 831, 832, 833, 834, 835,
-	836, 837, 838, 840, 841, 842, 843, 844, 845, 846,
-	847, 848, 0, 0, 0, 614, 0, 609, 0, 609,
-	609, 609, 0, 255, 388, 639, 640, 839, 0, 0,
-	0, 852, 0, 852, 267, 852, 852, 270, 852, 0,
-	852, 0, 277, 0, 0, 283, 852, 300, 301, 288,
-	302, 305, 308, 309, 310, 311, 312, 851, 851, 315,
-	29, 571, 0, 0, 559, 31, 0, 316, 321, 322,
-	326, 324, 325, 317, 0, 334, 338, 0, 397, 0,
-	402, 404, -2, -2, 0, 439, 440, 441, 442, 443,
-	0, 0, 0, 0, 0, 0, 0, 0, 467, 468,
-	469, 470, 544, 545, 546, 547, 548, 549, 550, 551,
-	406, 407, 541, 591, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 532, 0, 503, 503, 503, 503, 503,
-	503, 503, 503, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 44, 46, 388, 50, 0, 830,
-	595, -2, -2, 0, 0, 637, 638, -2, 748, -2,
-	643, 644, 645, 646, 647, 648, 649, 650, 651, 652,
+	21, 22, 560, 0, 317, 317, 317, 317, 317, 317,
+	0, 631, 614, 0, 0, 0, 0, -2, 304, 305,
+	0, 307, 308, 853, 853, 853, 853, 853, 0, 0,
+	853, 0, 35, 36, 851, 1, 3, 568, 0, 0,
+	321, 324, 319, 0, 614, 614, 0, 0, 65, 66,
+	0, 0, 0, 841, 0, 612, 612, 612, 632, 633,
+	636, 637, 739, 740, 741, 742, 743, 744, 745, 746,
+	747, 748, 749, 750, 751, 752, 753, 754, 755, 756,
+	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, 788, 789, 790, 791, 792, 793, 794, 795, 796,
+	797, 798, 799, 800, 801, 802, 803, 804, 805, 806,
+	807, 808, 809, 810, 811, 812, 813, 814, 815, 816,
+	817, 818, 819, 820, 821, 822, 823, 824, 825, 826,
+	827, 828, 829, 830, 831, 832, 833, 834, 835, 836,
+	837, 838, 839, 840, 842, 843, 844, 845, 846, 847,
+	848, 849, 850, 0, 0, 0, 615, 0, 610, 0,
+	610, 610, 610, 0, 256, 389, 640, 641, 841, 0,
+	0, 0, 854, 0, 854, 268, 854, 854, 271, 854,
+	0, 854, 0, 278, 0, 0, 284, 854, 301, 302,
+	289, 303, 306, 309, 310, 311, 312, 313, 853, 853,
+	316, 29, 572, 0, 0, 560, 31, 0, 317, 322,
+	323, 327, 325, 326, 318, 0, 335, 339, 0, 398,
+	0, 403, 405, -2, -2, 0, 440, 441, 442, 443,
+	444, 0, 0, 0, 0, 0, 0, 0, 0, 468,
+	469, 470, 471, 545, 546, 547, 548, 549, 550, 551,
+	552, 407, 408, 542, 592, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 533, 0, 504, 504, 504, 504,
+	504, 504, 504, 504, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 44, 46, 389, 50, 0,
+	832, 596, -2, -2, 0, 0, 638, 639, -2, 749,
+	-2, 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,
@@ -2495,107 +2518,108 @@ var yyDef = [...]int{
 	703, 704, 705, 706, 707, 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, 0, 0, 84, 0, 82,
-	0, 852, 0, 0, 0, 0, 0, 0, 852, 0,
-	0, 0, 0, 246, 0, 0, 0, 0, 0, 0,
-	0, 254, 0, 256, 852, 852, 259, 853, 854, 852,
-	852, 852, 0, 852, 852, 266, 268, 269, 271, 852,
-	852, 273, 0, 291, 289, 290, 285, 286, 0, 297,
-	280, 281, 284, 313, 314, 30, 850, 24, 0, 0,
-	568, 0, 560, 561, 564, 567, 29, 323, 0, 328,
-	327, 319, 0, 335, 0, 0, 0, 339, 0, 341,
-	342, 0, 400, 0, 0, 0, 0, 0, 0, 0,
+	733, 734, 735, 736, 737, 738, 0, 0, 84, 0,
+	82, 0, 854, 0, 0, 0, 0, 0, 0, 854,
+	0, 0, 0, 0, 247, 0, 0, 0, 0, 0,
+	0, 0, 255, 0, 257, 854, 854, 260, 855, 856,
+	854, 854, 854, 0, 854, 854, 267, 269, 270, 272,
+	854, 854, 274, 0, 292, 290, 291, 286, 287, 0,
+	298, 281, 282, 285, 314, 315, 30, 852, 24, 0,
+	0, 569, 0, 561, 562, 565, 568, 29, 324, 0,
+	329, 328, 320, 0, 336, 0, 0, 0, 340, 0,
+	342, 343, 0, 401, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 424, 425, 426, 427, 428, 429, 430, 403,
-	0, 417, 0, 0, 0, 459, 460, 461, 462, 463,
-	464, 465, 0, 330, 29, 0, 437, 0, 0, 0,
-	0, 0, 0, 0, 0, 326, 0, 533, 0, 487,
-	495, 0, 488, 496, 489, 497, 490, 0, 491, 498,
-	492, 499, 493, 494, 500, 0, 0, 0, 330, 0,
-	0, 48, 0, 387, 0, 345, 347, 348, 349, -2,
-	0, 371, -2, 0, 0, 0, 42, 43, 0, 0,
-	0, 0, 51, 830, 53, 54, 0, 0, 0, 162,
-	604, 605, 606, 602, 206, 0, 0, 150, 146, 90,
-	91, 92, 139, 94, 139, 139, 139, 139, 159, 159,
-	159, 159, 122, 123, 124, 125, 126, 0, 0, 109,
-	139, 139, 139, 113, 129, 130, 131, 132, 133, 134,
-	135, 136, 95, 96, 97, 98, 99, 100, 101, 102,
-	103, 141, 141, 141, 143, 143, 633, 68, 0, 852,
-	0, 852, 80, 0, 220, 0, 0, 0, 0, 0,
-	0, 0, 0, 249, 610, 0, 852, 252, 253, 389,
-	641, 642, 257, 258, 260, 261, 262, 263, 264, 265,
-	272, 276, 0, 294, 0, 0, 278, 279, 0, 0,
-	572, 0, 0, 0, 0, 0, 563, 565, 566, 571,
-	32, 326, 0, 552, 0, 0, 0, 329, 27, 398,
-	399, 401, 418, 0, 420, 422, 340, 336, 0, 542,
-	-2, 408, 409, 433, 434, 435, 0, 0, 0, 0,
-	431, 413, 0, 444, 445, 446, 447, 448, 449, 450,
-	451, 452, 453, 454, 455, 458, 517, 518, 0, 456,
-	457, 466, 0, 0, 331, 332, 436, 0, 590, 29,
-	0, 0, 0, 0, 441, 544, 0, 441, 544, 0,
-	0, 0, 539, 536, 0, 0, 541, 0, 504, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 386, 0,
-	0, 0, 0, 0, 0, 376, 0, 0, 379, 0,
-	0, 0, 0, 370, 0, 0, 391, 798, 372, 0,
-	374, 375, 395, 0, 395, 45, 395, 47, 0, 390,
-	596, 52, 0, 0, 57, 58, 597, 598, 599, 600,
-	0, 81, 207, 209, 212, 213, 214, 85, 86, 87,
-	0, 0, 194, 0, 0, 188, 188, 0, 186, 187,
-	83, 153, 151, 0, 148, 147, 93, 0, 159, 159,
-	116, 117, 162, 0, 162, 162, 162, 0, 0, 110,
-	111, 112, 104, 0, 105, 106, 107, 0, 108, 0,
-	0, 852, 70, 612, 71, 851, 0, 0, 625, 221,
-	615, 616, 617, 618, 619, 620, 621, 622, 623, 624,
-	0, 72, 223, 225, 224, 228, 0, 0, 0, 247,
-	852, 251, 291, 275, 0, 0, 292, 293, 298, 282,
-	0, 569, 570, 0, 562, 25, 0, 607, 608, 553,
-	554, 343, 419, 421, 423, 0, 330, 410, 431, 414,
-	0, 411, 0, 0, 405, 471, 0, 0, 438, -2,
-	474, 475, 0, 0, 0, 0, 0, 510, 0, 0,
-	511, 0, 559, 0, 537, 0, 0, 486, 0, 505,
-	0, 0, 506, 507, 508, 509, 584, 0, 0, -2,
-	0, 0, 395, 592, 0, 346, 365, 367, 0, 362,
-	377, 378, 380, 0, 382, 0, 384, 385, 350, 352,
-	353, 0, 0, 0, 0, 373, 559, 0, 395, 40,
-	41, 0, 55, 56, 0, 0, 62, 163, 164, 0,
-	210, 0, 0, 0, 181, 188, 188, 184, 189, 185,
-	0, 155, 0, 152, 89, 149, 0, 162, 162, 118,
-	0, 119, 120, 121, 0, 137, 0, 0, 0, 0,
-	634, 69, 215, 851, 230, 231, 232, 233, 234, 235,
-	236, 237, 238, 239, 240, 851, 0, 851, 626, 627,
-	628, 629, 0, 75, 0, 0, 0, 0, 0, 250,
-	294, 295, 296, 573, 0, 26, 395, 0, 337, 543,
-	0, 412, 0, 432, 415, 472, 333, 0, 139, 139,
-	522, 139, 143, 525, 139, 527, 139, 530, 0, 0,
-	0, 0, 0, 0, 0, 534, 485, 540, 0, 542,
-	0, 0, 33, 0, 584, 574, 586, 588, 0, 29,
-	0, 580, 0, 357, 559, 0, 0, 359, 366, 0,
-	0, 360, 0, 361, 381, 383, 0, 0, 0, 0,
-	567, 396, 39, 59, 60, 61, 208, 211, 0, 190,
-	139, 193, 182, 183, 0, 157, 0, 154, 140, 114,
-	115, 160, 161, 159, 0, 159, 0, 144, 0, 852,
-	216, 217, 218, 219, 0, 222, 0, 73, 74, 0,
-	0, 227, 248, 274, 555, 344, 473, 416, 476, 519,
-	159, 523, 524, 526, 528, 529, 531, 478, 477, 0,
-	0, 0, 0, 0, 0, 0, 538, 0, 0, 0,
-	34, 0, 589, -2, 0, 0, 0, 49, 0, 567,
-	593, 594, 363, 0, 368, 0, 0, 0, 371, 38,
-	173, 0, 192, 0, 355, 165, 158, 0, 162, 138,
-	162, 0, 0, 67, 0, 76, 77, 0, 0, 0,
-	557, 0, 520, 521, 0, 0, 0, 0, 512, 484,
-	535, 0, 0, 0, 587, 0, -2, 0, 582, 581,
-	358, 37, 0, 0, 0, 0, 391, 172, 174, 0,
-	179, 0, 191, 0, 0, 170, 0, 167, 169, 156,
-	127, 128, 142, 145, 0, 0, 0, 0, 229, 28,
-	0, 0, 479, 481, 480, 482, 0, 0, 0, 501,
-	502, 0, 577, 29, 0, 364, 392, 393, 394, 354,
-	175, 176, 0, 180, 178, 0, 356, 88, 0, 166,
-	168, 0, 242, 0, 78, 79, 72, 558, 556, 483,
-	0, 0, 0, 585, -2, 583, 177, 0, 171, 241,
-	0, 0, 75, 513, 0, 516, 0, 243, 0, 226,
-	514, 0, 0, 0, 195, 0, 0, 196, 197, 0,
-	0, 515, 198, 0, 0, 0, 0, 0, 199, 201,
-	202, 0, 0, 200, 244, 245, 203, 204, 205,
+	0, 0, 0, 425, 426, 427, 428, 429, 430, 431,
+	404, 0, 418, 0, 0, 0, 460, 461, 462, 463,
+	464, 465, 466, 0, 331, 29, 0, 438, 0, 0,
+	0, 0, 0, 0, 0, 0, 327, 0, 534, 0,
+	488, 496, 0, 489, 497, 490, 498, 491, 0, 492,
+	499, 493, 500, 494, 495, 501, 0, 0, 0, 331,
+	0, 0, 48, 0, 388, 0, 346, 348, 349, 350,
+	-2, 0, 372, -2, 0, 0, 0, 42, 43, 0,
+	0, 0, 0, 51, 832, 53, 54, 0, 0, 0,
+	162, 605, 606, 607, 603, 206, 0, 0, 150, 146,
+	90, 91, 92, 139, 94, 139, 139, 139, 139, 159,
+	159, 159, 159, 122, 123, 124, 125, 126, 0, 0,
+	109, 139, 139, 139, 113, 129, 130, 131, 132, 133,
+	134, 135, 136, 95, 96, 97, 98, 99, 100, 101,
+	102, 103, 141, 141, 141, 143, 143, 634, 68, 0,
+	854, 0, 854, 80, 0, 220, 0, 0, 0, 0,
+	0, 0, 0, 0, 250, 611, 0, 854, 253, 254,
+	390, 642, 643, 258, 259, 261, 262, 263, 264, 265,
+	266, 273, 277, 0, 295, 0, 0, 279, 280, 0,
+	0, 573, 0, 0, 0, 0, 0, 564, 566, 567,
+	572, 32, 327, 0, 553, 0, 0, 0, 330, 27,
+	399, 400, 402, 419, 0, 421, 423, 341, 337, 0,
+	543, -2, 409, 410, 434, 435, 436, 0, 0, 0,
+	0, 432, 414, 0, 445, 446, 447, 448, 449, 450,
+	451, 452, 453, 454, 455, 456, 459, 518, 519, 0,
+	457, 458, 467, 0, 0, 332, 333, 437, 0, 591,
+	29, 0, 0, 0, 0, 442, 545, 0, 442, 545,
+	0, 0, 0, 540, 537, 0, 0, 542, 0, 505,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 387,
+	0, 0, 0, 0, 0, 0, 377, 0, 0, 380,
+	0, 0, 0, 0, 371, 0, 0, 392, 800, 373,
+	0, 375, 376, 396, 0, 396, 45, 396, 47, 0,
+	391, 597, 52, 0, 0, 57, 58, 598, 599, 600,
+	601, 0, 81, 207, 209, 212, 213, 214, 85, 86,
+	87, 0, 0, 194, 0, 0, 188, 188, 0, 186,
+	187, 83, 153, 151, 0, 148, 147, 93, 0, 159,
+	159, 116, 117, 162, 0, 162, 162, 162, 0, 0,
+	110, 111, 112, 104, 0, 105, 106, 107, 0, 108,
+	0, 0, 854, 70, 613, 71, 853, 0, 0, 626,
+	221, 616, 617, 618, 619, 620, 621, 622, 623, 624,
+	625, 0, 72, 223, 225, 224, 228, 0, 0, 0,
+	248, 854, 252, 292, 276, 0, 0, 293, 294, 299,
+	283, 0, 570, 571, 0, 563, 25, 0, 608, 609,
+	554, 555, 344, 420, 422, 424, 0, 331, 411, 432,
+	415, 0, 412, 0, 0, 406, 472, 0, 0, 439,
+	-2, 475, 476, 0, 0, 0, 0, 0, 511, 0,
+	0, 512, 0, 560, 0, 538, 0, 0, 487, 0,
+	506, 0, 0, 507, 508, 509, 510, 585, 0, 0,
+	-2, 0, 0, 396, 593, 0, 347, 366, 368, 0,
+	363, 378, 379, 381, 0, 383, 0, 385, 386, 351,
+	353, 354, 0, 0, 0, 0, 374, 560, 0, 396,
+	40, 41, 0, 55, 56, 0, 0, 62, 163, 164,
+	0, 210, 0, 0, 0, 181, 188, 188, 184, 189,
+	185, 0, 155, 0, 152, 89, 149, 0, 162, 162,
+	118, 0, 119, 120, 121, 0, 137, 0, 0, 0,
+	0, 635, 69, 215, 853, 230, 231, 232, 233, 234,
+	235, 236, 237, 238, 239, 240, 241, 853, 0, 853,
+	627, 628, 629, 630, 0, 75, 0, 0, 0, 0,
+	0, 251, 295, 296, 297, 574, 0, 26, 396, 0,
+	338, 544, 0, 413, 0, 433, 416, 473, 334, 0,
+	139, 139, 523, 139, 143, 526, 139, 528, 139, 531,
+	0, 0, 0, 0, 0, 0, 0, 535, 486, 541,
+	0, 543, 0, 0, 33, 0, 585, 575, 587, 589,
+	0, 29, 0, 581, 0, 358, 560, 0, 0, 360,
+	367, 0, 0, 361, 0, 362, 382, 384, 0, 0,
+	0, 0, 568, 397, 39, 59, 60, 61, 208, 211,
+	0, 190, 139, 193, 182, 183, 0, 157, 0, 154,
+	140, 114, 115, 160, 161, 159, 0, 159, 0, 144,
+	0, 854, 216, 217, 218, 219, 0, 222, 0, 73,
+	74, 0, 0, 227, 249, 275, 556, 345, 474, 417,
+	477, 520, 159, 524, 525, 527, 529, 530, 532, 479,
+	478, 0, 0, 0, 0, 0, 0, 0, 539, 0,
+	0, 0, 34, 0, 590, -2, 0, 0, 0, 49,
+	0, 568, 594, 595, 364, 0, 369, 0, 0, 0,
+	372, 38, 173, 0, 192, 0, 356, 165, 158, 0,
+	162, 138, 162, 0, 0, 67, 0, 76, 77, 0,
+	0, 0, 558, 0, 521, 522, 0, 0, 0, 0,
+	513, 485, 536, 0, 0, 0, 588, 0, -2, 0,
+	583, 582, 359, 37, 0, 0, 0, 0, 392, 172,
+	174, 0, 179, 0, 191, 0, 0, 170, 0, 167,
+	169, 156, 127, 128, 142, 145, 0, 0, 0, 0,
+	229, 28, 0, 0, 480, 482, 481, 483, 0, 0,
+	0, 502, 503, 0, 578, 29, 0, 365, 393, 394,
+	395, 355, 175, 176, 0, 180, 178, 0, 357, 88,
+	0, 166, 168, 0, 243, 0, 78, 79, 72, 559,
+	557, 484, 0, 0, 0, 586, -2, 584, 177, 0,
+	171, 242, 0, 0, 75, 514, 0, 517, 0, 244,
+	0, 226, 515, 0, 0, 0, 195, 0, 0, 196,
+	197, 0, 0, 516, 198, 0, 0, 0, 0, 0,
+	199, 201, 202, 0, 0, 200, 245, 246, 203, 204,
+	205,
 }
 var yyTok1 = [...]int{
 
@@ -2604,7 +2628,7 @@ var yyTok1 = [...]int{
 	3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 	3, 3, 3, 75, 3, 3, 3, 102, 94, 3,
 	54, 56, 99, 97, 55, 98, 112, 100, 3, 3,
-	3, 3, 3, 3, 3, 3, 3, 3, 3, 265,
+	3, 3, 3, 3, 3, 3, 3, 3, 3, 266,
 	83, 82, 84, 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,
@@ -2639,7 +2663,7 @@ var yyTok2 = [...]int{
 	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, 255, 256, 257, 258,
-	259, 260, 261, 262, 263, 264,
+	259, 260, 261, 262, 263, 264, 265,
 }
 var yyTok3 = [...]int{
 	0,
@@ -4320,59 +4344,59 @@ yydefault:
 				},
 			}
 		}
-	case 241:
+	case 242:
 		yyDollar = yyS[yypt-7 : yypt+1]
-//line sql.y:1395
+//line sql.y:1396
 		{
 			yyVAL.partSpec = &PartitionSpec{Action: ReorganizeStr, Name: yyDollar[3].colIdent, Definitions: yyDollar[6].partDefs}
 		}
-	case 242:
+	case 243:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1401
+//line sql.y:1402
 		{
 			yyVAL.partDefs = []*PartitionDefinition{yyDollar[1].partDef}
 		}
-	case 243:
+	case 244:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1405
+//line sql.y:1406
 		{
 			yyVAL.partDefs = append(yyDollar[1].partDefs, yyDollar[3].partDef)
 		}
-	case 244:
+	case 245:
 		yyDollar = yyS[yypt-8 : yypt+1]
-//line sql.y:1411
+//line sql.y:1412
 		{
 			yyVAL.partDef = &PartitionDefinition{Name: yyDollar[2].colIdent, Limit: yyDollar[7].expr}
 		}
-	case 245:
+	case 246:
 		yyDollar = yyS[yypt-8 : yypt+1]
-//line sql.y:1415
+//line sql.y:1416
 		{
 			yyVAL.partDef = &PartitionDefinition{Name: yyDollar[2].colIdent, Maxvalue: true}
 		}
-	case 246:
+	case 247:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1421
+//line sql.y:1422
 		{
 			yyVAL.statement = yyDollar[3].ddl
 		}
-	case 247:
+	case 248:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1427
+//line sql.y:1428
 		{
 			yyVAL.ddl = &DDL{Action: RenameStr, FromTables: TableNames{yyDollar[1].tableName}, ToTables: TableNames{yyDollar[3].tableName}}
 		}
-	case 248:
+	case 249:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:1431
+//line sql.y:1432
 		{
 			yyVAL.ddl = yyDollar[1].ddl
 			yyVAL.ddl.FromTables = append(yyVAL.ddl.FromTables, yyDollar[3].tableName)
 			yyVAL.ddl.ToTables = append(yyVAL.ddl.ToTables, yyDollar[5].tableName)
 		}
-	case 249:
+	case 250:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1439
+//line sql.y:1440
 		{
 			var exists bool
 			if yyDollar[3].byt != 0 {
@@ -4380,16 +4404,16 @@ yydefault:
 			}
 			yyVAL.statement = &DDL{Action: DropStr, FromTables: yyDollar[4].tableNames, IfExists: exists}
 		}
-	case 250:
+	case 251:
 		yyDollar = yyS[yypt-6 : yypt+1]
-//line sql.y:1447
+//line sql.y:1448
 		{
 			// Change this to an alter statement
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[5].tableName}
 		}
-	case 251:
+	case 252:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:1452
+//line sql.y:1453
 		{
 			var exists bool
 			if yyDollar[3].byt != 0 {
@@ -4397,148 +4421,148 @@ yydefault:
 			}
 			yyVAL.statement = &DDL{Action: DropStr, FromTables: TableNames{yyDollar[4].tableName.ToViewName()}, IfExists: exists}
 		}
-	case 252:
+	case 253:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1460
+//line sql.y:1461
 		{
 			yyVAL.statement = &DBDDL{Action: DropStr, DBName: string(yyDollar[4].bytes)}
 		}
-	case 253:
+	case 254:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1464
+//line sql.y:1465
 		{
 			yyVAL.statement = &DBDDL{Action: DropStr, DBName: string(yyDollar[4].bytes)}
 		}
-	case 254:
+	case 255:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1470
+//line sql.y:1471
 		{
 			yyVAL.statement = &DDL{Action: TruncateStr, Table: yyDollar[3].tableName}
 		}
-	case 255:
+	case 256:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1474
+//line sql.y:1475
 		{
 			yyVAL.statement = &DDL{Action: TruncateStr, Table: yyDollar[2].tableName}
 		}
-	case 256:
+	case 257:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1479
+//line sql.y:1480
 		{
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[3].tableName}
 		}
-	case 257:
+	case 258:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1485
+//line sql.y:1486
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 258:
+	case 259:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1490
+//line sql.y:1491
 		{
 			yyVAL.statement = &Show{Type: CharsetStr}
 		}
-	case 259:
+	case 260:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1494
+//line sql.y:1495
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 260:
-		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1498
-		{
-			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
-		}
 	case 261:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1503
+//line sql.y:1499
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
 	case 262:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1507
+//line sql.y:1504
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
 	case 263:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1511
+//line sql.y:1508
 		{
-			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes), Table: yyDollar[4].tableName}
+			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
 	case 264:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1515
+//line sql.y:1512
 		{
-			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
+			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes), Table: yyDollar[4].tableName}
 		}
 	case 265:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1519
+//line sql.y:1516
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
 	case 266:
-		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1523
+		yyDollar = yyS[yypt-4 : yypt+1]
+//line sql.y:1520
 		{
-			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
+			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
 	case 267:
-		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1527
+		yyDollar = yyS[yypt-3 : yypt+1]
+//line sql.y:1524
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
 	case 268:
-		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1531
+		yyDollar = yyS[yypt-2 : yypt+1]
+//line sql.y:1528
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
 	case 269:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1535
+//line sql.y:1532
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
 	case 270:
-		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1539
+		yyDollar = yyS[yypt-3 : yypt+1]
+//line sql.y:1536
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
 	case 271:
-		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1543
+		yyDollar = yyS[yypt-2 : yypt+1]
+//line sql.y:1540
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
 	case 272:
+		yyDollar = yyS[yypt-3 : yypt+1]
+//line sql.y:1544
+		{
+			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
+		}
+	case 273:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1547
+//line sql.y:1548
 		{
 			yyVAL.statement = &Show{Scope: yyDollar[2].str, Type: string(yyDollar[3].bytes)}
 		}
-	case 273:
+	case 274:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1551
+//line sql.y:1552
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 274:
+	case 275:
 		yyDollar = yyS[yypt-7 : yypt+1]
-//line sql.y:1555
+//line sql.y:1556
 		{
 			showTablesOpt := &ShowTablesOpt{Full: yyDollar[2].str, DbName: yyDollar[6].str, Filter: yyDollar[7].showFilter}
 			yyVAL.statement = &Show{Type: string(yyDollar[3].str), ShowTablesOpt: showTablesOpt, OnTable: yyDollar[5].tableName}
 		}
-	case 275:
+	case 276:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:1560
+//line sql.y:1561
 		{
 			// this is ugly, but I couldn't find a better way for now
 			if yyDollar[3].str == "processlist" {
@@ -4548,645 +4572,645 @@ yydefault:
 				yyVAL.statement = &Show{Type: yyDollar[3].str, ShowTablesOpt: showTablesOpt}
 			}
 		}
-	case 276:
+	case 277:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1570
+//line sql.y:1571
 		{
 			yyVAL.statement = &Show{Scope: yyDollar[2].str, Type: string(yyDollar[3].bytes)}
 		}
-	case 277:
+	case 278:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1574
+//line sql.y:1575
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 278:
+	case 279:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1578
+//line sql.y:1579
 		{
 			// Cannot dereference $4 directly, or else the parser stackcannot be pooled. See yyParsePooled
 			showCollationFilterOpt := yyDollar[4].expr
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes), ShowCollationFilterOpt: &showCollationFilterOpt}
 		}
-	case 279:
+	case 280:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1584
+//line sql.y:1585
 		{
 			showTablesOpt := &ShowTablesOpt{Filter: yyDollar[4].showFilter}
 			yyVAL.statement = &Show{Scope: string(yyDollar[2].bytes), Type: string(yyDollar[3].bytes), ShowTablesOpt: showTablesOpt}
 		}
-	case 280:
+	case 281:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1589
+//line sql.y:1590
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 281:
+	case 282:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1593
+//line sql.y:1594
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes)}
 		}
-	case 282:
+	case 283:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:1597
+//line sql.y:1598
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes) + " " + string(yyDollar[3].bytes), OnTable: yyDollar[5].tableName}
 		}
-	case 283:
+	case 284:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1601
+//line sql.y:1602
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 284:
+	case 285:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1615
+//line sql.y:1616
 		{
 			yyVAL.statement = &Show{Type: string(yyDollar[2].bytes)}
 		}
-	case 285:
+	case 286:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1621
+//line sql.y:1622
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 286:
+	case 287:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1625
+//line sql.y:1626
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 287:
+	case 288:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:1631
+//line sql.y:1632
 		{
 			yyVAL.str = ""
 		}
-	case 288:
+	case 289:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1635
+//line sql.y:1636
 		{
 			yyVAL.str = "full "
 		}
-	case 289:
+	case 290:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1641
+//line sql.y:1642
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 290:
+	case 291:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1645
+//line sql.y:1646
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 291:
+	case 292:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:1651
+//line sql.y:1652
 		{
 			yyVAL.str = ""
 		}
-	case 292:
+	case 293:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1655
+//line sql.y:1656
 		{
 			yyVAL.str = yyDollar[2].tableIdent.v
 		}
-	case 293:
+	case 294:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1659
+//line sql.y:1660
 		{
 			yyVAL.str = yyDollar[2].tableIdent.v
 		}
-	case 294:
+	case 295:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:1665
+//line sql.y:1666
 		{
 			yyVAL.showFilter = nil
 		}
-	case 295:
+	case 296:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1669
+//line sql.y:1670
 		{
 			yyVAL.showFilter = &ShowFilter{Like: string(yyDollar[2].bytes)}
 		}
-	case 296:
+	case 297:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1673
+//line sql.y:1674
 		{
 			yyVAL.showFilter = &ShowFilter{Filter: yyDollar[2].expr}
 		}
-	case 297:
+	case 298:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:1679
+//line sql.y:1680
 		{
 			yyVAL.showFilter = nil
 		}
-	case 298:
+	case 299:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1683
+//line sql.y:1684
 		{
 			yyVAL.showFilter = &ShowFilter{Like: string(yyDollar[2].bytes)}
 		}
-	case 299:
+	case 300:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:1689
+//line sql.y:1690
 		{
 			yyVAL.str = ""
 		}
-	case 300:
+	case 301:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1693
+//line sql.y:1694
 		{
 			yyVAL.str = SessionStr
 		}
-	case 301:
+	case 302:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1697
+//line sql.y:1698
 		{
 			yyVAL.str = GlobalStr
 		}
-	case 302:
+	case 303:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1703
+//line sql.y:1704
 		{
 			yyVAL.statement = &Use{DBName: yyDollar[2].tableIdent}
 		}
-	case 303:
+	case 304:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1707
+//line sql.y:1708
 		{
 			yyVAL.statement = &Use{DBName: TableIdent{v: ""}}
 		}
-	case 304:
+	case 305:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1713
+//line sql.y:1714
 		{
 			yyVAL.statement = &Begin{}
 		}
-	case 305:
+	case 306:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1717
+//line sql.y:1718
 		{
 			yyVAL.statement = &Begin{}
 		}
-	case 306:
+	case 307:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1723
+//line sql.y:1724
 		{
 			yyVAL.statement = &Commit{}
 		}
-	case 307:
+	case 308:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1729
+//line sql.y:1730
 		{
 			yyVAL.statement = &Rollback{}
 		}
-	case 308:
-		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1735
-		{
-			yyVAL.statement = &OtherRead{}
-		}
 	case 309:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1739
+//line sql.y:1736
 		{
 			yyVAL.statement = &OtherRead{}
 		}
 	case 310:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1743
+//line sql.y:1740
 		{
 			yyVAL.statement = &OtherRead{}
 		}
 	case 311:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1747
+//line sql.y:1744
 		{
-			yyVAL.statement = &OtherAdmin{}
+			yyVAL.statement = &OtherRead{}
 		}
 	case 312:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1751
+//line sql.y:1748
 		{
 			yyVAL.statement = &OtherAdmin{}
 		}
 	case 313:
-		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1755
+		yyDollar = yyS[yypt-2 : yypt+1]
+//line sql.y:1752
 		{
 			yyVAL.statement = &OtherAdmin{}
 		}
 	case 314:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1759
+//line sql.y:1756
 		{
 			yyVAL.statement = &OtherAdmin{}
 		}
 	case 315:
+		yyDollar = yyS[yypt-3 : yypt+1]
+//line sql.y:1760
+		{
+			yyVAL.statement = &OtherAdmin{}
+		}
+	case 316:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1765
+//line sql.y:1766
 		{
 			yyVAL.statement = &DDL{Action: FlushStr}
 		}
-	case 316:
+	case 317:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:1769
+//line sql.y:1770
 		{
 			setAllowComments(yylex, true)
 		}
-	case 317:
+	case 318:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1773
+//line sql.y:1774
 		{
 			yyVAL.bytes2 = yyDollar[2].bytes2
 			setAllowComments(yylex, false)
 		}
-	case 318:
+	case 319:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:1779
+//line sql.y:1780
 		{
 			yyVAL.bytes2 = nil
 		}
-	case 319:
+	case 320:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1783
+//line sql.y:1784
 		{
 			yyVAL.bytes2 = append(yyDollar[1].bytes2, yyDollar[2].bytes)
 		}
-	case 320:
+	case 321:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1789
+//line sql.y:1790
 		{
 			yyVAL.str = UnionStr
 		}
-	case 321:
+	case 322:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1793
+//line sql.y:1794
 		{
 			yyVAL.str = UnionAllStr
 		}
-	case 322:
+	case 323:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1797
+//line sql.y:1798
 		{
 			yyVAL.str = UnionDistinctStr
 		}
-	case 323:
+	case 324:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:1802
+//line sql.y:1803
 		{
 			yyVAL.str = ""
 		}
-	case 324:
+	case 325:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1806
+//line sql.y:1807
 		{
 			yyVAL.str = SQLNoCacheStr
 		}
-	case 325:
+	case 326:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1810
+//line sql.y:1811
 		{
 			yyVAL.str = SQLCacheStr
 		}
-	case 326:
+	case 327:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:1815
+//line sql.y:1816
 		{
 			yyVAL.str = ""
 		}
-	case 327:
+	case 328:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1819
+//line sql.y:1820
 		{
 			yyVAL.str = DistinctStr
 		}
-	case 328:
+	case 329:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:1824
+//line sql.y:1825
 		{
 			yyVAL.str = ""
 		}
-	case 329:
+	case 330:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1828
+//line sql.y:1829
 		{
 			yyVAL.str = StraightJoinHint
 		}
-	case 330:
+	case 331:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:1833
+//line sql.y:1834
 		{
 			yyVAL.selectExprs = nil
 		}
-	case 331:
+	case 332:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1837
+//line sql.y:1838
 		{
 			yyVAL.selectExprs = yyDollar[1].selectExprs
 		}
-	case 332:
+	case 333:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1843
+//line sql.y:1844
 		{
 			yyVAL.selectExprs = SelectExprs{yyDollar[1].selectExpr}
 		}
-	case 333:
+	case 334:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1847
+//line sql.y:1848
 		{
 			yyVAL.selectExprs = append(yyVAL.selectExprs, yyDollar[3].selectExpr)
 		}
-	case 334:
+	case 335:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1853
+//line sql.y:1854
 		{
 			yyVAL.selectExpr = &StarExpr{}
 		}
-	case 335:
+	case 336:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1857
+//line sql.y:1858
 		{
 			yyVAL.selectExpr = &AliasedExpr{Expr: yyDollar[1].expr, As: yyDollar[2].colIdent}
 		}
-	case 336:
+	case 337:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1861
+//line sql.y:1862
 		{
 			yyVAL.selectExpr = &StarExpr{TableName: TableName{Name: yyDollar[1].tableIdent}}
 		}
-	case 337:
+	case 338:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:1865
+//line sql.y:1866
 		{
 			yyVAL.selectExpr = &StarExpr{TableName: TableName{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].tableIdent}}
 		}
-	case 338:
+	case 339:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:1870
+//line sql.y:1871
 		{
 			yyVAL.colIdent = ColIdent{}
 		}
-	case 339:
+	case 340:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1874
+//line sql.y:1875
 		{
 			yyVAL.colIdent = yyDollar[1].colIdent
 		}
-	case 340:
+	case 341:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1878
+//line sql.y:1879
 		{
 			yyVAL.colIdent = yyDollar[2].colIdent
 		}
-	case 342:
+	case 343:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1885
+//line sql.y:1886
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 343:
+	case 344:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:1890
+//line sql.y:1891
 		{
 			yyVAL.tableExprs = TableExprs{&AliasedTableExpr{Expr: TableName{Name: NewTableIdent("dual")}}}
 		}
-	case 344:
+	case 345:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1894
+//line sql.y:1895
 		{
 			yyVAL.tableExprs = yyDollar[2].tableExprs
 		}
-	case 345:
+	case 346:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1900
+//line sql.y:1901
 		{
 			yyVAL.tableExprs = TableExprs{yyDollar[1].tableExpr}
 		}
-	case 346:
+	case 347:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1904
+//line sql.y:1905
 		{
 			yyVAL.tableExprs = append(yyVAL.tableExprs, yyDollar[3].tableExpr)
 		}
-	case 349:
+	case 350:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1914
+//line sql.y:1915
 		{
 			yyVAL.tableExpr = yyDollar[1].aliasedTableName
 		}
-	case 350:
+	case 351:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1918
+//line sql.y:1919
 		{
 			yyVAL.tableExpr = &AliasedTableExpr{Expr: yyDollar[1].subquery, As: yyDollar[3].tableIdent}
 		}
-	case 351:
+	case 352:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1922
+//line sql.y:1923
 		{
 			// missed alias for subquery
 			yylex.Error("Every derived table must have its own alias")
 			return 1
 		}
-	case 352:
+	case 353:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1928
+//line sql.y:1929
 		{
 			yyVAL.tableExpr = &ParenTableExpr{Exprs: yyDollar[2].tableExprs}
 		}
-	case 353:
+	case 354:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1934
+//line sql.y:1935
 		{
 			yyVAL.aliasedTableName = &AliasedTableExpr{Expr: yyDollar[1].tableName, As: yyDollar[2].tableIdent, Hints: yyDollar[3].indexHints}
 		}
-	case 354:
+	case 355:
 		yyDollar = yyS[yypt-7 : yypt+1]
-//line sql.y:1938
+//line sql.y:1939
 		{
 			yyVAL.aliasedTableName = &AliasedTableExpr{Expr: yyDollar[1].tableName, Partitions: yyDollar[4].partitions, As: yyDollar[6].tableIdent, Hints: yyDollar[7].indexHints}
 		}
-	case 355:
+	case 356:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1944
+//line sql.y:1945
 		{
 			yyVAL.columns = Columns{yyDollar[1].colIdent}
 		}
-	case 356:
+	case 357:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1948
+//line sql.y:1949
 		{
 			yyVAL.columns = append(yyVAL.columns, yyDollar[3].colIdent)
 		}
-	case 357:
+	case 358:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1954
+//line sql.y:1955
 		{
 			yyVAL.partitions = Partitions{yyDollar[1].colIdent}
 		}
-	case 358:
+	case 359:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1958
+//line sql.y:1959
 		{
 			yyVAL.partitions = append(yyVAL.partitions, yyDollar[3].colIdent)
 		}
-	case 359:
+	case 360:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1971
+//line sql.y:1972
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr, Condition: yyDollar[4].joinCondition}
 		}
-	case 360:
+	case 361:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1975
+//line sql.y:1976
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr, Condition: yyDollar[4].joinCondition}
 		}
-	case 361:
+	case 362:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1979
+//line sql.y:1980
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr, Condition: yyDollar[4].joinCondition}
 		}
-	case 362:
+	case 363:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:1983
+//line sql.y:1984
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr}
 		}
-	case 363:
+	case 364:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:1989
+//line sql.y:1990
 		{
 			yyVAL.joinCondition = JoinCondition{On: yyDollar[2].expr}
 		}
-	case 364:
+	case 365:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:1991
+//line sql.y:1992
 		{
 			yyVAL.joinCondition = JoinCondition{Using: yyDollar[3].columns}
 		}
-	case 365:
+	case 366:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:1995
+//line sql.y:1996
 		{
 			yyVAL.joinCondition = JoinCondition{}
 		}
-	case 366:
+	case 367:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:1997
+//line sql.y:1998
 		{
 			yyVAL.joinCondition = yyDollar[1].joinCondition
 		}
-	case 367:
+	case 368:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2001
+//line sql.y:2002
 		{
 			yyVAL.joinCondition = JoinCondition{}
 		}
-	case 368:
+	case 369:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2003
+//line sql.y:2004
 		{
 			yyVAL.joinCondition = JoinCondition{On: yyDollar[2].expr}
 		}
-	case 369:
+	case 370:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2006
+//line sql.y:2007
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 370:
+	case 371:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2008
+//line sql.y:2009
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 371:
+	case 372:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2011
+//line sql.y:2012
 		{
 			yyVAL.tableIdent = NewTableIdent("")
 		}
-	case 372:
+	case 373:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2015
+//line sql.y:2016
 		{
 			yyVAL.tableIdent = yyDollar[1].tableIdent
 		}
-	case 373:
+	case 374:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2019
+//line sql.y:2020
 		{
 			yyVAL.tableIdent = yyDollar[2].tableIdent
 		}
-	case 375:
+	case 376:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2026
+//line sql.y:2027
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 376:
+	case 377:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2032
+//line sql.y:2033
 		{
 			yyVAL.str = JoinStr
 		}
-	case 377:
+	case 378:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2036
+//line sql.y:2037
 		{
 			yyVAL.str = JoinStr
 		}
-	case 378:
+	case 379:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2040
+//line sql.y:2041
 		{
 			yyVAL.str = JoinStr
 		}
-	case 379:
+	case 380:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2046
+//line sql.y:2047
 		{
 			yyVAL.str = StraightJoinStr
 		}
-	case 380:
+	case 381:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2052
+//line sql.y:2053
 		{
 			yyVAL.str = LeftJoinStr
 		}
-	case 381:
+	case 382:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2056
+//line sql.y:2057
 		{
 			yyVAL.str = LeftJoinStr
 		}
-	case 382:
+	case 383:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2060
+//line sql.y:2061
 		{
 			yyVAL.str = RightJoinStr
 		}
-	case 383:
+	case 384:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2064
+//line sql.y:2065
 		{
 			yyVAL.str = RightJoinStr
 		}
-	case 384:
+	case 385:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2070
+//line sql.y:2071
 		{
 			yyVAL.str = NaturalJoinStr
 		}
-	case 385:
+	case 386:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2074
+//line sql.y:2075
 		{
 			if yyDollar[2].str == LeftJoinStr {
 				yyVAL.str = NaturalLeftJoinStr
@@ -5194,465 +5218,465 @@ yydefault:
 				yyVAL.str = NaturalRightJoinStr
 			}
 		}
-	case 386:
+	case 387:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2084
+//line sql.y:2085
 		{
 			yyVAL.tableName = yyDollar[2].tableName
 		}
-	case 387:
+	case 388:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2088
+//line sql.y:2089
 		{
 			yyVAL.tableName = yyDollar[1].tableName
 		}
-	case 388:
+	case 389:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2094
+//line sql.y:2095
 		{
 			yyVAL.tableName = TableName{Name: yyDollar[1].tableIdent}
 		}
-	case 389:
+	case 390:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2098
+//line sql.y:2099
 		{
 			yyVAL.tableName = TableName{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].tableIdent}
 		}
-	case 390:
+	case 391:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2104
+//line sql.y:2105
 		{
 			yyVAL.tableName = TableName{Name: yyDollar[1].tableIdent}
 		}
-	case 391:
+	case 392:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2109
+//line sql.y:2110
 		{
 			yyVAL.indexHints = nil
 		}
-	case 392:
+	case 393:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:2113
+//line sql.y:2114
 		{
 			yyVAL.indexHints = &IndexHints{Type: UseStr, Indexes: yyDollar[4].columns}
 		}
-	case 393:
+	case 394:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:2117
+//line sql.y:2118
 		{
 			yyVAL.indexHints = &IndexHints{Type: IgnoreStr, Indexes: yyDollar[4].columns}
 		}
-	case 394:
+	case 395:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:2121
+//line sql.y:2122
 		{
 			yyVAL.indexHints = &IndexHints{Type: ForceStr, Indexes: yyDollar[4].columns}
 		}
-	case 395:
+	case 396:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2126
+//line sql.y:2127
 		{
 			yyVAL.expr = nil
 		}
-	case 396:
+	case 397:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2130
+//line sql.y:2131
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 397:
+	case 398:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2136
+//line sql.y:2137
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 398:
+	case 399:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2140
+//line sql.y:2141
 		{
 			yyVAL.expr = &AndExpr{Left: yyDollar[1].expr, Right: yyDollar[3].expr}
 		}
-	case 399:
+	case 400:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2144
+//line sql.y:2145
 		{
 			yyVAL.expr = &OrExpr{Left: yyDollar[1].expr, Right: yyDollar[3].expr}
 		}
-	case 400:
+	case 401:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2148
+//line sql.y:2149
 		{
 			yyVAL.expr = &NotExpr{Expr: yyDollar[2].expr}
 		}
-	case 401:
+	case 402:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2152
+//line sql.y:2153
 		{
 			yyVAL.expr = &IsExpr{Operator: yyDollar[3].str, Expr: yyDollar[1].expr}
 		}
-	case 402:
+	case 403:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2156
+//line sql.y:2157
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 403:
+	case 404:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2160
+//line sql.y:2161
 		{
 			yyVAL.expr = &Default{ColName: yyDollar[2].str}
 		}
-	case 404:
+	case 405:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2166
+//line sql.y:2167
 		{
 			yyVAL.str = ""
 		}
-	case 405:
+	case 406:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2170
+//line sql.y:2171
 		{
 			yyVAL.str = string(yyDollar[2].bytes)
 		}
-	case 406:
+	case 407:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2176
+//line sql.y:2177
 		{
 			yyVAL.boolVal = BoolVal(true)
 		}
-	case 407:
+	case 408:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2180
+//line sql.y:2181
 		{
 			yyVAL.boolVal = BoolVal(false)
 		}
-	case 408:
+	case 409:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2186
+//line sql.y:2187
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: yyDollar[2].str, Right: yyDollar[3].expr}
 		}
-	case 409:
+	case 410:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2190
+//line sql.y:2191
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: InStr, Right: yyDollar[3].colTuple}
 		}
-	case 410:
+	case 411:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2194
+//line sql.y:2195
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: NotInStr, Right: yyDollar[4].colTuple}
 		}
-	case 411:
+	case 412:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2198
+//line sql.y:2199
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: LikeStr, Right: yyDollar[3].expr, Escape: yyDollar[4].expr}
 		}
-	case 412:
+	case 413:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:2202
+//line sql.y:2203
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: NotLikeStr, Right: yyDollar[4].expr, Escape: yyDollar[5].expr}
 		}
-	case 413:
+	case 414:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2206
+//line sql.y:2207
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: RegexpStr, Right: yyDollar[3].expr}
 		}
-	case 414:
+	case 415:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2210
+//line sql.y:2211
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: NotRegexpStr, Right: yyDollar[4].expr}
 		}
-	case 415:
+	case 416:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:2214
+//line sql.y:2215
 		{
 			yyVAL.expr = &RangeCond{Left: yyDollar[1].expr, Operator: BetweenStr, From: yyDollar[3].expr, To: yyDollar[5].expr}
 		}
-	case 416:
+	case 417:
 		yyDollar = yyS[yypt-6 : yypt+1]
-//line sql.y:2218
+//line sql.y:2219
 		{
 			yyVAL.expr = &RangeCond{Left: yyDollar[1].expr, Operator: NotBetweenStr, From: yyDollar[4].expr, To: yyDollar[6].expr}
 		}
-	case 417:
+	case 418:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2222
+//line sql.y:2223
 		{
 			yyVAL.expr = &ExistsExpr{Subquery: yyDollar[2].subquery}
 		}
-	case 418:
+	case 419:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2228
+//line sql.y:2229
 		{
 			yyVAL.str = IsNullStr
 		}
-	case 419:
+	case 420:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2232
+//line sql.y:2233
 		{
 			yyVAL.str = IsNotNullStr
 		}
-	case 420:
+	case 421:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2236
+//line sql.y:2237
 		{
 			yyVAL.str = IsTrueStr
 		}
-	case 421:
+	case 422:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2240
+//line sql.y:2241
 		{
 			yyVAL.str = IsNotTrueStr
 		}
-	case 422:
+	case 423:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2244
+//line sql.y:2245
 		{
 			yyVAL.str = IsFalseStr
 		}
-	case 423:
+	case 424:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2248
+//line sql.y:2249
 		{
 			yyVAL.str = IsNotFalseStr
 		}
-	case 424:
+	case 425:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2254
+//line sql.y:2255
 		{
 			yyVAL.str = EqualStr
 		}
-	case 425:
+	case 426:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2258
+//line sql.y:2259
 		{
 			yyVAL.str = LessThanStr
 		}
-	case 426:
+	case 427:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2262
+//line sql.y:2263
 		{
 			yyVAL.str = GreaterThanStr
 		}
-	case 427:
+	case 428:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2266
+//line sql.y:2267
 		{
 			yyVAL.str = LessEqualStr
 		}
-	case 428:
+	case 429:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2270
+//line sql.y:2271
 		{
 			yyVAL.str = GreaterEqualStr
 		}
-	case 429:
+	case 430:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2274
+//line sql.y:2275
 		{
 			yyVAL.str = NotEqualStr
 		}
-	case 430:
+	case 431:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2278
+//line sql.y:2279
 		{
 			yyVAL.str = NullSafeEqualStr
 		}
-	case 431:
+	case 432:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2283
+//line sql.y:2284
 		{
 			yyVAL.expr = nil
 		}
-	case 432:
+	case 433:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2287
+//line sql.y:2288
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 433:
+	case 434:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2293
+//line sql.y:2294
 		{
 			yyVAL.colTuple = yyDollar[1].valTuple
 		}
-	case 434:
+	case 435:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2297
+//line sql.y:2298
 		{
 			yyVAL.colTuple = yyDollar[1].subquery
 		}
-	case 435:
+	case 436:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2301
+//line sql.y:2302
 		{
 			yyVAL.colTuple = ListArg(yyDollar[1].bytes)
 		}
-	case 436:
+	case 437:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2307
+//line sql.y:2308
 		{
 			yyVAL.subquery = &Subquery{yyDollar[2].selStmt}
 		}
-	case 437:
+	case 438:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2313
+//line sql.y:2314
 		{
 			yyVAL.exprs = Exprs{yyDollar[1].expr}
 		}
-	case 438:
+	case 439:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2317
+//line sql.y:2318
 		{
 			yyVAL.exprs = append(yyDollar[1].exprs, yyDollar[3].expr)
 		}
-	case 439:
+	case 440:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2323
+//line sql.y:2324
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 440:
+	case 441:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2327
+//line sql.y:2328
 		{
 			yyVAL.expr = yyDollar[1].boolVal
 		}
-	case 441:
+	case 442:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2331
+//line sql.y:2332
 		{
 			yyVAL.expr = yyDollar[1].colName
 		}
-	case 442:
+	case 443:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2335
+//line sql.y:2336
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 443:
+	case 444:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2339
+//line sql.y:2340
 		{
 			yyVAL.expr = yyDollar[1].subquery
 		}
-	case 444:
+	case 445:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2343
+//line sql.y:2344
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: BitAndStr, Right: yyDollar[3].expr}
 		}
-	case 445:
+	case 446:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2347
+//line sql.y:2348
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: BitOrStr, Right: yyDollar[3].expr}
 		}
-	case 446:
+	case 447:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2351
+//line sql.y:2352
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: BitXorStr, Right: yyDollar[3].expr}
 		}
-	case 447:
+	case 448:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2355
+//line sql.y:2356
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: PlusStr, Right: yyDollar[3].expr}
 		}
-	case 448:
+	case 449:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2359
+//line sql.y:2360
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: MinusStr, Right: yyDollar[3].expr}
 		}
-	case 449:
+	case 450:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2363
+//line sql.y:2364
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: MultStr, Right: yyDollar[3].expr}
 		}
-	case 450:
+	case 451:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2367
+//line sql.y:2368
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: DivStr, Right: yyDollar[3].expr}
 		}
-	case 451:
+	case 452:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2371
+//line sql.y:2372
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: IntDivStr, Right: yyDollar[3].expr}
 		}
-	case 452:
+	case 453:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2375
+//line sql.y:2376
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ModStr, Right: yyDollar[3].expr}
 		}
-	case 453:
+	case 454:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2379
+//line sql.y:2380
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ModStr, Right: yyDollar[3].expr}
 		}
-	case 454:
+	case 455:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2383
+//line sql.y:2384
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ShiftLeftStr, Right: yyDollar[3].expr}
 		}
-	case 455:
+	case 456:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2387
+//line sql.y:2388
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ShiftRightStr, Right: yyDollar[3].expr}
 		}
-	case 456:
+	case 457:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2391
+//line sql.y:2392
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].colName, Operator: JSONExtractOp, Right: yyDollar[3].expr}
 		}
-	case 457:
+	case 458:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2395
+//line sql.y:2396
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].colName, Operator: JSONUnquoteExtractOp, Right: yyDollar[3].expr}
 		}
-	case 458:
+	case 459:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2399
+//line sql.y:2400
 		{
 			yyVAL.expr = &CollateExpr{Expr: yyDollar[1].expr, Charset: yyDollar[3].str}
 		}
-	case 459:
+	case 460:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2403
+//line sql.y:2404
 		{
 			yyVAL.expr = &UnaryExpr{Operator: BinaryStr, Expr: yyDollar[2].expr}
 		}
-	case 460:
+	case 461:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2407
+//line sql.y:2408
 		{
 			yyVAL.expr = &UnaryExpr{Operator: UBinaryStr, Expr: yyDollar[2].expr}
 		}
-	case 461:
+	case 462:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2411
+//line sql.y:2412
 		{
 			yyVAL.expr = &UnaryExpr{Operator: Utf8mb4Str, Expr: yyDollar[2].expr}
 		}
-	case 462:
+	case 463:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2415
+//line sql.y:2416
 		{
 			if num, ok := yyDollar[2].expr.(*SQLVal); ok && num.Type == IntVal {
 				yyVAL.expr = num
@@ -5660,9 +5684,9 @@ yydefault:
 				yyVAL.expr = &UnaryExpr{Operator: UPlusStr, Expr: yyDollar[2].expr}
 			}
 		}
-	case 463:
+	case 464:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2423
+//line sql.y:2424
 		{
 			if num, ok := yyDollar[2].expr.(*SQLVal); ok && num.Type == IntVal {
 				// Handle double negative
@@ -5676,21 +5700,21 @@ yydefault:
 				yyVAL.expr = &UnaryExpr{Operator: UMinusStr, Expr: yyDollar[2].expr}
 			}
 		}
-	case 464:
+	case 465:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2437
+//line sql.y:2438
 		{
 			yyVAL.expr = &UnaryExpr{Operator: TildaStr, Expr: yyDollar[2].expr}
 		}
-	case 465:
+	case 466:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2441
+//line sql.y:2442
 		{
 			yyVAL.expr = &UnaryExpr{Operator: BangStr, Expr: yyDollar[2].expr}
 		}
-	case 466:
+	case 467:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2445
+//line sql.y:2446
 		{
 			// This rule prevents the usage of INTERVAL
 			// as a function. If support is needed for that,
@@ -5698,485 +5722,485 @@ yydefault:
 			// will be non-trivial because of grammar conflicts.
 			yyVAL.expr = &IntervalExpr{Expr: yyDollar[2].expr, Unit: yyDollar[3].colIdent.String()}
 		}
-	case 471:
+	case 472:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2463
+//line sql.y:2464
 		{
 			yyVAL.expr = &FuncExpr{Name: yyDollar[1].colIdent, Exprs: yyDollar[3].selectExprs}
 		}
-	case 472:
+	case 473:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:2467
+//line sql.y:2468
 		{
 			yyVAL.expr = &FuncExpr{Name: yyDollar[1].colIdent, Distinct: true, Exprs: yyDollar[4].selectExprs}
 		}
-	case 473:
+	case 474:
 		yyDollar = yyS[yypt-6 : yypt+1]
-//line sql.y:2471
+//line sql.y:2472
 		{
 			yyVAL.expr = &FuncExpr{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].colIdent, Exprs: yyDollar[5].selectExprs}
 		}
-	case 474:
+	case 475:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2481
+//line sql.y:2482
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("left"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 475:
+	case 476:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2485
+//line sql.y:2486
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("right"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 476:
+	case 477:
 		yyDollar = yyS[yypt-6 : yypt+1]
-//line sql.y:2489
+//line sql.y:2490
 		{
 			yyVAL.expr = &ConvertExpr{Expr: yyDollar[3].expr, Type: yyDollar[5].convertType}
 		}
-	case 477:
+	case 478:
 		yyDollar = yyS[yypt-6 : yypt+1]
-//line sql.y:2493
+//line sql.y:2494
 		{
 			yyVAL.expr = &ConvertExpr{Expr: yyDollar[3].expr, Type: yyDollar[5].convertType}
 		}
-	case 478:
+	case 479:
 		yyDollar = yyS[yypt-6 : yypt+1]
-//line sql.y:2497
+//line sql.y:2498
 		{
 			yyVAL.expr = &ConvertUsingExpr{Expr: yyDollar[3].expr, Type: yyDollar[5].str}
 		}
-	case 479:
+	case 480:
 		yyDollar = yyS[yypt-8 : yypt+1]
-//line sql.y:2501
+//line sql.y:2502
 		{
 			yyVAL.expr = &SubstrExpr{Name: yyDollar[3].colName, From: yyDollar[5].expr, To: yyDollar[7].expr}
 		}
-	case 480:
+	case 481:
 		yyDollar = yyS[yypt-8 : yypt+1]
-//line sql.y:2505
+//line sql.y:2506
 		{
 			yyVAL.expr = &SubstrExpr{Name: yyDollar[3].colName, From: yyDollar[5].expr, To: yyDollar[7].expr}
 		}
-	case 481:
+	case 482:
 		yyDollar = yyS[yypt-8 : yypt+1]
-//line sql.y:2509
+//line sql.y:2510
 		{
 			yyVAL.expr = &SubstrExpr{StrVal: NewStrVal(yyDollar[3].bytes), From: yyDollar[5].expr, To: yyDollar[7].expr}
 		}
-	case 482:
+	case 483:
 		yyDollar = yyS[yypt-8 : yypt+1]
-//line sql.y:2513
+//line sql.y:2514
 		{
 			yyVAL.expr = &SubstrExpr{StrVal: NewStrVal(yyDollar[3].bytes), From: yyDollar[5].expr, To: yyDollar[7].expr}
 		}
-	case 483:
+	case 484:
 		yyDollar = yyS[yypt-9 : yypt+1]
-//line sql.y:2517
+//line sql.y:2518
 		{
 			yyVAL.expr = &MatchExpr{Columns: yyDollar[3].selectExprs, Expr: yyDollar[7].expr, Option: yyDollar[8].str}
 		}
-	case 484:
+	case 485:
 		yyDollar = yyS[yypt-7 : yypt+1]
-//line sql.y:2521
+//line sql.y:2522
 		{
 			yyVAL.expr = &GroupConcatExpr{Distinct: yyDollar[3].str, Exprs: yyDollar[4].selectExprs, OrderBy: yyDollar[5].orderBy, Separator: yyDollar[6].str}
 		}
-	case 485:
+	case 486:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:2525
+//line sql.y:2526
 		{
 			yyVAL.expr = &CaseExpr{Expr: yyDollar[2].expr, Whens: yyDollar[3].whens, Else: yyDollar[4].expr}
 		}
-	case 486:
+	case 487:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2529
+//line sql.y:2530
 		{
 			yyVAL.expr = &ValuesFuncExpr{Name: yyDollar[3].colName}
 		}
-	case 487:
+	case 488:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2539
+//line sql.y:2540
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("current_timestamp")}
 		}
-	case 488:
+	case 489:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2543
+//line sql.y:2544
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("utc_timestamp")}
 		}
-	case 489:
+	case 490:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2547
+//line sql.y:2548
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("utc_time")}
 		}
-	case 490:
+	case 491:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2552
+//line sql.y:2553
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("utc_date")}
 		}
-	case 491:
+	case 492:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2557
+//line sql.y:2558
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("localtime")}
 		}
-	case 492:
+	case 493:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2562
+//line sql.y:2563
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("localtimestamp")}
 		}
-	case 493:
+	case 494:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2568
+//line sql.y:2569
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("current_date")}
 		}
-	case 494:
+	case 495:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2573
+//line sql.y:2574
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("current_time")}
 		}
-	case 495:
+	case 496:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2578
+//line sql.y:2579
 		{
 			yyVAL.expr = &CurTimeFuncExpr{Name: NewColIdent("current_timestamp"), Fsp: yyDollar[2].expr}
 		}
-	case 496:
+	case 497:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2582
+//line sql.y:2583
 		{
 			yyVAL.expr = &CurTimeFuncExpr{Name: NewColIdent("utc_timestamp"), Fsp: yyDollar[2].expr}
 		}
-	case 497:
+	case 498:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2586
+//line sql.y:2587
 		{
 			yyVAL.expr = &CurTimeFuncExpr{Name: NewColIdent("utc_time"), Fsp: yyDollar[2].expr}
 		}
-	case 498:
+	case 499:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2591
+//line sql.y:2592
 		{
 			yyVAL.expr = &CurTimeFuncExpr{Name: NewColIdent("localtime"), Fsp: yyDollar[2].expr}
 		}
-	case 499:
+	case 500:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2596
+//line sql.y:2597
 		{
 			yyVAL.expr = &CurTimeFuncExpr{Name: NewColIdent("localtimestamp"), Fsp: yyDollar[2].expr}
 		}
-	case 500:
+	case 501:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2601
+//line sql.y:2602
 		{
 			yyVAL.expr = &CurTimeFuncExpr{Name: NewColIdent("current_time"), Fsp: yyDollar[2].expr}
 		}
-	case 501:
+	case 502:
 		yyDollar = yyS[yypt-8 : yypt+1]
-//line sql.y:2605
+//line sql.y:2606
 		{
 			yyVAL.expr = &TimestampFuncExpr{Name: string("timestampadd"), Unit: yyDollar[3].colIdent.String(), Expr1: yyDollar[5].expr, Expr2: yyDollar[7].expr}
 		}
-	case 502:
+	case 503:
 		yyDollar = yyS[yypt-8 : yypt+1]
-//line sql.y:2609
+//line sql.y:2610
 		{
 			yyVAL.expr = &TimestampFuncExpr{Name: string("timestampdiff"), Unit: yyDollar[3].colIdent.String(), Expr1: yyDollar[5].expr, Expr2: yyDollar[7].expr}
 		}
-	case 505:
+	case 506:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2619
+//line sql.y:2620
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 506:
+	case 507:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2629
+//line sql.y:2630
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("if"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 507:
+	case 508:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2633
+//line sql.y:2634
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("database"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 508:
+	case 509:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2637
+//line sql.y:2638
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("mod"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 509:
+	case 510:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2641
+//line sql.y:2642
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("replace"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 510:
+	case 511:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2645
+//line sql.y:2646
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("substr"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 511:
+	case 512:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2649
+//line sql.y:2650
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("substr"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 512:
+	case 513:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2655
+//line sql.y:2656
 		{
 			yyVAL.str = ""
 		}
-	case 513:
+	case 514:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2659
+//line sql.y:2660
 		{
 			yyVAL.str = BooleanModeStr
 		}
-	case 514:
+	case 515:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2663
+//line sql.y:2664
 		{
 			yyVAL.str = NaturalLanguageModeStr
 		}
-	case 515:
+	case 516:
 		yyDollar = yyS[yypt-7 : yypt+1]
-//line sql.y:2667
+//line sql.y:2668
 		{
 			yyVAL.str = NaturalLanguageModeWithQueryExpansionStr
 		}
-	case 516:
+	case 517:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2671
+//line sql.y:2672
 		{
 			yyVAL.str = QueryExpansionStr
 		}
-	case 517:
+	case 518:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2677
+//line sql.y:2678
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 518:
+	case 519:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2681
+//line sql.y:2682
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 519:
+	case 520:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2687
+//line sql.y:2688
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].sqlVal}
 		}
-	case 520:
+	case 521:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2691
+//line sql.y:2692
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].sqlVal, Charset: yyDollar[3].str, Operator: CharacterSetStr}
 		}
-	case 521:
+	case 522:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2695
+//line sql.y:2696
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].sqlVal, Charset: string(yyDollar[3].bytes)}
 		}
-	case 522:
+	case 523:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2699
+//line sql.y:2700
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 523:
+	case 524:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2703
+//line sql.y:2704
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].sqlVal}
 		}
-	case 524:
+	case 525:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2707
+//line sql.y:2708
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 			yyVAL.convertType.Length = yyDollar[2].LengthScaleOption.Length
 			yyVAL.convertType.Scale = yyDollar[2].LengthScaleOption.Scale
 		}
-	case 525:
+	case 526:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2713
+//line sql.y:2714
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 526:
+	case 527:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2717
+//line sql.y:2718
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].sqlVal}
 		}
-	case 527:
+	case 528:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2721
+//line sql.y:2722
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 528:
+	case 529:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2725
+//line sql.y:2726
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 529:
+	case 530:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2729
+//line sql.y:2730
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].sqlVal}
 		}
-	case 530:
+	case 531:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2733
+//line sql.y:2734
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 531:
+	case 532:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2737
+//line sql.y:2738
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 532:
+	case 533:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2742
+//line sql.y:2743
 		{
 			yyVAL.expr = nil
 		}
-	case 533:
+	case 534:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2746
+//line sql.y:2747
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 534:
+	case 535:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2751
+//line sql.y:2752
 		{
 			yyVAL.str = string("")
 		}
-	case 535:
+	case 536:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2755
+//line sql.y:2756
 		{
 			yyVAL.str = " separator '" + string(yyDollar[2].bytes) + "'"
 		}
-	case 536:
+	case 537:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2761
+//line sql.y:2762
 		{
 			yyVAL.whens = []*When{yyDollar[1].when}
 		}
-	case 537:
+	case 538:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2765
+//line sql.y:2766
 		{
 			yyVAL.whens = append(yyDollar[1].whens, yyDollar[2].when)
 		}
-	case 538:
+	case 539:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2771
+//line sql.y:2772
 		{
 			yyVAL.when = &When{Cond: yyDollar[2].expr, Val: yyDollar[4].expr}
 		}
-	case 539:
+	case 540:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2776
+//line sql.y:2777
 		{
 			yyVAL.expr = nil
 		}
-	case 540:
+	case 541:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2780
+//line sql.y:2781
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 541:
+	case 542:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2786
+//line sql.y:2787
 		{
 			yyVAL.colName = &ColName{Name: yyDollar[1].colIdent}
 		}
-	case 542:
+	case 543:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2790
+//line sql.y:2791
 		{
 			yyVAL.colName = &ColName{Qualifier: TableName{Name: yyDollar[1].tableIdent}, Name: yyDollar[3].colIdent}
 		}
-	case 543:
+	case 544:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:2794
+//line sql.y:2795
 		{
 			yyVAL.colName = &ColName{Qualifier: TableName{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].tableIdent}, Name: yyDollar[5].colIdent}
 		}
-	case 544:
+	case 545:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2800
+//line sql.y:2801
 		{
 			yyVAL.expr = NewStrVal(yyDollar[1].bytes)
 		}
-	case 545:
+	case 546:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2804
+//line sql.y:2805
 		{
 			yyVAL.expr = NewHexVal(yyDollar[1].bytes)
 		}
-	case 546:
+	case 547:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2808
+//line sql.y:2809
 		{
 			yyVAL.expr = NewBitVal(yyDollar[1].bytes)
 		}
-	case 547:
+	case 548:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2812
+//line sql.y:2813
 		{
 			yyVAL.expr = NewIntVal(yyDollar[1].bytes)
 		}
-	case 548:
+	case 549:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2816
+//line sql.y:2817
 		{
 			yyVAL.expr = NewFloatVal(yyDollar[1].bytes)
 		}
-	case 549:
+	case 550:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2820
+//line sql.y:2821
 		{
 			yyVAL.expr = NewHexNum(yyDollar[1].bytes)
 		}
-	case 550:
+	case 551:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2824
+//line sql.y:2825
 		{
 			yyVAL.expr = NewValArg(yyDollar[1].bytes)
 		}
-	case 551:
+	case 552:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2828
+//line sql.y:2829
 		{
 			yyVAL.expr = &NullVal{}
 		}
-	case 552:
+	case 553:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2834
+//line sql.y:2835
 		{
 			// TODO(sougou): Deprecate this construct.
 			if yyDollar[1].colIdent.Lowered() != "value" {
@@ -6185,239 +6209,239 @@ yydefault:
 			}
 			yyVAL.expr = NewIntVal([]byte("1"))
 		}
-	case 553:
+	case 554:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2843
+//line sql.y:2844
 		{
 			yyVAL.expr = NewIntVal(yyDollar[1].bytes)
 		}
-	case 554:
+	case 555:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2847
+//line sql.y:2848
 		{
 			yyVAL.expr = NewValArg(yyDollar[1].bytes)
 		}
-	case 555:
+	case 556:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2852
+//line sql.y:2853
 		{
 			yyVAL.exprs = nil
 		}
-	case 556:
+	case 557:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2856
+//line sql.y:2857
 		{
 			yyVAL.exprs = yyDollar[3].exprs
 		}
-	case 557:
+	case 558:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2861
+//line sql.y:2862
 		{
 			yyVAL.expr = nil
 		}
-	case 558:
+	case 559:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2865
+//line sql.y:2866
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 559:
+	case 560:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2870
+//line sql.y:2871
 		{
 			yyVAL.orderBy = nil
 		}
-	case 560:
+	case 561:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2874
+//line sql.y:2875
 		{
 			yyVAL.orderBy = yyDollar[3].orderBy
 		}
-	case 561:
+	case 562:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2880
+//line sql.y:2881
 		{
 			yyVAL.orderBy = OrderBy{yyDollar[1].order}
 		}
-	case 562:
+	case 563:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2884
+//line sql.y:2885
 		{
 			yyVAL.orderBy = append(yyDollar[1].orderBy, yyDollar[3].order)
 		}
-	case 563:
+	case 564:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2890
+//line sql.y:2891
 		{
 			yyVAL.order = &Order{Expr: yyDollar[1].expr, Direction: yyDollar[2].str}
 		}
-	case 564:
+	case 565:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2895
+//line sql.y:2896
 		{
 			yyVAL.str = AscScr
 		}
-	case 565:
+	case 566:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2899
+//line sql.y:2900
 		{
 			yyVAL.str = AscScr
 		}
-	case 566:
+	case 567:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2903
+//line sql.y:2904
 		{
 			yyVAL.str = DescScr
 		}
-	case 567:
+	case 568:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2908
+//line sql.y:2909
 		{
 			yyVAL.limit = nil
 		}
-	case 568:
+	case 569:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2912
+//line sql.y:2913
 		{
 			yyVAL.limit = &Limit{Rowcount: yyDollar[2].expr}
 		}
-	case 569:
+	case 570:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2916
+//line sql.y:2917
 		{
 			yyVAL.limit = &Limit{Offset: yyDollar[2].expr, Rowcount: yyDollar[4].expr}
 		}
-	case 570:
+	case 571:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2920
+//line sql.y:2921
 		{
 			yyVAL.limit = &Limit{Offset: yyDollar[4].expr, Rowcount: yyDollar[2].expr}
 		}
-	case 571:
+	case 572:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2925
+//line sql.y:2926
 		{
 			yyVAL.str = ""
 		}
-	case 572:
+	case 573:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2929
+//line sql.y:2930
 		{
 			yyVAL.str = ForUpdateStr
 		}
-	case 573:
+	case 574:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2933
+//line sql.y:2934
 		{
 			yyVAL.str = ShareModeStr
 		}
-	case 574:
+	case 575:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:2946
+//line sql.y:2947
 		{
 			yyVAL.ins = &Insert{Rows: yyDollar[2].values}
 		}
-	case 575:
+	case 576:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2950
+//line sql.y:2951
 		{
 			yyVAL.ins = &Insert{Rows: yyDollar[1].selStmt}
 		}
-	case 576:
+	case 577:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2954
+//line sql.y:2955
 		{
 			// Drop the redundant parenthesis.
 			yyVAL.ins = &Insert{Rows: yyDollar[2].selStmt}
 		}
-	case 577:
+	case 578:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:2959
+//line sql.y:2960
 		{
 			yyVAL.ins = &Insert{Columns: yyDollar[2].columns, Rows: yyDollar[5].values}
 		}
-	case 578:
+	case 579:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line sql.y:2963
+//line sql.y:2964
 		{
 			yyVAL.ins = &Insert{Columns: yyDollar[2].columns, Rows: yyDollar[4].selStmt}
 		}
-	case 579:
+	case 580:
 		yyDollar = yyS[yypt-6 : yypt+1]
-//line sql.y:2967
+//line sql.y:2968
 		{
 			// Drop the redundant parenthesis.
 			yyVAL.ins = &Insert{Columns: yyDollar[2].columns, Rows: yyDollar[5].selStmt}
 		}
-	case 580:
+	case 581:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:2974
+//line sql.y:2975
 		{
 			yyVAL.columns = Columns{yyDollar[1].colIdent}
 		}
-	case 581:
+	case 582:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2978
+//line sql.y:2979
 		{
 			yyVAL.columns = Columns{yyDollar[3].colIdent}
 		}
-	case 582:
+	case 583:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:2982
+//line sql.y:2983
 		{
 			yyVAL.columns = append(yyVAL.columns, yyDollar[3].colIdent)
 		}
-	case 583:
+	case 584:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:2986
+//line sql.y:2987
 		{
 			yyVAL.columns = append(yyVAL.columns, yyDollar[5].colIdent)
 		}
-	case 584:
+	case 585:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:2991
+//line sql.y:2992
 		{
 			yyVAL.updateExprs = nil
 		}
-	case 585:
+	case 586:
 		yyDollar = yyS[yypt-5 : yypt+1]
-//line sql.y:2995
+//line sql.y:2996
 		{
 			yyVAL.updateExprs = yyDollar[5].updateExprs
 		}
-	case 586:
+	case 587:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3001
+//line sql.y:3002
 		{
 			yyVAL.values = Values{yyDollar[1].valTuple}
 		}
-	case 587:
+	case 588:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:3005
+//line sql.y:3006
 		{
 			yyVAL.values = append(yyDollar[1].values, yyDollar[3].valTuple)
 		}
-	case 588:
+	case 589:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3011
+//line sql.y:3012
 		{
 			yyVAL.valTuple = yyDollar[1].valTuple
 		}
-	case 589:
+	case 590:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:3015
+//line sql.y:3016
 		{
 			yyVAL.valTuple = ValTuple{}
 		}
-	case 590:
+	case 591:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:3021
+//line sql.y:3022
 		{
 			yyVAL.valTuple = ValTuple(yyDollar[2].exprs)
 		}
-	case 591:
+	case 592:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3027
+//line sql.y:3028
 		{
 			if len(yyDollar[1].valTuple) == 1 {
 				yyVAL.expr = &ParenExpr{yyDollar[1].valTuple[0]}
@@ -6425,312 +6449,312 @@ yydefault:
 				yyVAL.expr = yyDollar[1].valTuple
 			}
 		}
-	case 592:
+	case 593:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3037
+//line sql.y:3038
 		{
 			yyVAL.updateExprs = UpdateExprs{yyDollar[1].updateExpr}
 		}
-	case 593:
+	case 594:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:3041
+//line sql.y:3042
 		{
 			yyVAL.updateExprs = append(yyDollar[1].updateExprs, yyDollar[3].updateExpr)
 		}
-	case 594:
+	case 595:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:3047
+//line sql.y:3048
 		{
 			yyVAL.updateExpr = &UpdateExpr{Name: yyDollar[1].colName, Expr: yyDollar[3].expr}
 		}
-	case 595:
+	case 596:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3053
+//line sql.y:3054
 		{
 			yyVAL.setExprs = SetExprs{yyDollar[1].setExpr}
 		}
-	case 596:
+	case 597:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:3057
+//line sql.y:3058
 		{
 			yyVAL.setExprs = append(yyDollar[1].setExprs, yyDollar[3].setExpr)
 		}
-	case 597:
+	case 598:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:3063
+//line sql.y:3064
 		{
 			yyVAL.setExpr = &SetExpr{Name: yyDollar[1].colIdent, Expr: NewStrVal([]byte("on"))}
 		}
-	case 598:
+	case 599:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:3067
+//line sql.y:3068
 		{
 			yyVAL.setExpr = &SetExpr{Name: yyDollar[1].colIdent, Expr: NewStrVal([]byte("off"))}
 		}
-	case 599:
+	case 600:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:3071
+//line sql.y:3072
 		{
 			yyVAL.setExpr = &SetExpr{Name: yyDollar[1].colIdent, Expr: yyDollar[3].expr}
 		}
-	case 600:
+	case 601:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:3075
+//line sql.y:3076
 		{
 			yyVAL.setExpr = &SetExpr{Name: NewColIdent(string(yyDollar[1].bytes)), Expr: yyDollar[2].expr}
 		}
-	case 602:
+	case 603:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:3082
+//line sql.y:3083
 		{
 			yyVAL.bytes = []byte("charset")
 		}
-	case 604:
+	case 605:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3089
+//line sql.y:3090
 		{
 			yyVAL.expr = NewStrVal([]byte(yyDollar[1].colIdent.String()))
 		}
-	case 605:
+	case 606:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3093
+//line sql.y:3094
 		{
 			yyVAL.expr = NewStrVal(yyDollar[1].bytes)
 		}
-	case 606:
+	case 607:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3097
+//line sql.y:3098
 		{
 			yyVAL.expr = &Default{}
 		}
-	case 609:
+	case 610:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:3106
+//line sql.y:3107
 		{
 			yyVAL.byt = 0
 		}
-	case 610:
+	case 611:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:3108
+//line sql.y:3109
 		{
 			yyVAL.byt = 1
 		}
-	case 611:
+	case 612:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:3111
+//line sql.y:3112
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 612:
+	case 613:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line sql.y:3113
+//line sql.y:3114
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 613:
+	case 614:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:3116
+//line sql.y:3117
 		{
 			yyVAL.str = ""
 		}
-	case 614:
-		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3118
-		{
-			yyVAL.str = IgnoreStr
-		}
 	case 615:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3122
+//line sql.y:3119
 		{
-			yyVAL.empty = struct{}{}
+			yyVAL.str = IgnoreStr
 		}
 	case 616:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3124
+//line sql.y:3123
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 617:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3126
+//line sql.y:3125
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 618:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3128
+//line sql.y:3127
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 619:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3130
+//line sql.y:3129
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 620:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3132
+//line sql.y:3131
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 621:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3134
+//line sql.y:3133
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 622:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3136
+//line sql.y:3135
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 623:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3138
+//line sql.y:3137
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 624:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3140
+//line sql.y:3139
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 625:
-		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:3143
+		yyDollar = yyS[yypt-1 : yypt+1]
+//line sql.y:3141
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 626:
-		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3145
+		yyDollar = yyS[yypt-0 : yypt+1]
+//line sql.y:3144
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 627:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3147
+//line sql.y:3146
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 628:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3151
+//line sql.y:3148
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 629:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3153
+//line sql.y:3152
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 630:
-		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:3156
+		yyDollar = yyS[yypt-1 : yypt+1]
+//line sql.y:3154
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 631:
-		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3158
+		yyDollar = yyS[yypt-0 : yypt+1]
+//line sql.y:3157
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 632:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3160
+//line sql.y:3159
 		{
 			yyVAL.empty = struct{}{}
 		}
 	case 633:
+		yyDollar = yyS[yypt-1 : yypt+1]
+//line sql.y:3161
+		{
+			yyVAL.empty = struct{}{}
+		}
+	case 634:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:3163
+//line sql.y:3164
 		{
 			yyVAL.colIdent = ColIdent{}
 		}
-	case 634:
+	case 635:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line sql.y:3165
+//line sql.y:3166
 		{
 			yyVAL.colIdent = yyDollar[2].colIdent
 		}
-	case 635:
+	case 636:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3169
+//line sql.y:3170
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 636:
+	case 637:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3173
+//line sql.y:3174
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 638:
+	case 639:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3180
+//line sql.y:3181
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 639:
+	case 640:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3186
+//line sql.y:3187
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 640:
+	case 641:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3190
+//line sql.y:3191
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 642:
+	case 643:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3197
+//line sql.y:3198
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 849:
+	case 851:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3429
+//line sql.y:3431
 		{
 			if incNesting(yylex) {
 				yylex.Error("max nesting level reached")
 				return 1
 			}
 		}
-	case 850:
+	case 852:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3438
+//line sql.y:3440
 		{
 			decNesting(yylex)
 		}
-	case 851:
+	case 853:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:3443
+//line sql.y:3445
 		{
 			skipToEnd(yylex)
 		}
-	case 852:
+	case 854:
 		yyDollar = yyS[yypt-0 : yypt+1]
-//line sql.y:3448
+//line sql.y:3450
 		{
 			skipToEnd(yylex)
 		}
-	case 853:
+	case 855:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3452
+//line sql.y:3454
 		{
 			skipToEnd(yylex)
 		}
-	case 854:
+	case 856:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line sql.y:3456
+//line sql.y:3458
 		{
 			skipToEnd(yylex)
 		}
diff --git a/go/vt/sqlparser/sql.y b/go/vt/sqlparser/sql.y
index 586cdec597e..20bbbc191f9 100644
--- a/go/vt/sqlparser/sql.y
+++ b/go/vt/sqlparser/sql.y
@@ -158,7 +158,7 @@ func skipToEnd(yylex interface{}) {
 
 // DDL Tokens
 %token <bytes> CREATE ALTER DROP RENAME ANALYZE ADD FLUSH
-%token <bytes> SCHEMA TABLE INDEX VIEW TO IGNORE IF UNIQUE PRIMARY COLUMN  SPATIAL FULLTEXT KEY_BLOCK_SIZE
+%token <bytes> SCHEMA TABLE INDEX VIEW TO IGNORE IF UNIQUE PRIMARY COLUMN SPATIAL FULLTEXT KEY_BLOCK_SIZE CHECK
 %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
@@ -1378,7 +1378,8 @@ alter_statement:
   }
 
 alter_object_type:
-  COLUMN
+  CHECK
+| COLUMN
 | CONSTRAINT
 | FOREIGN
 | FULLTEXT
@@ -3324,6 +3325,7 @@ non_reserved_keyword:
 | CHAR
 | CHARACTER
 | CHARSET
+| CHECK
 | COLLATION
 | COLUMNS
 | COMMENT_KEYWORD
diff --git a/go/vt/sqlparser/token.go b/go/vt/sqlparser/token.go
index d623138c88d..a06e239d9a7 100644
--- a/go/vt/sqlparser/token.go
+++ b/go/vt/sqlparser/token.go
@@ -117,7 +117,7 @@ var keywords = map[string]int{
 	"char":                CHAR,
 	"character":           CHARACTER,
 	"charset":             CHARSET,
-	"check":               UNUSED,
+	"check":               CHECK,
 	"collate":             COLLATE,
 	"collation":           COLLATION,
 	"column":              COLUMN,