forked from pingcap/tidb
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathexecutor_test.go
6311 lines (5523 loc) · 270 KB
/
executor_test.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
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
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// Copyright 2022 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package executor_test
import (
"archive/zip"
"context"
"fmt"
"math"
"path/filepath"
"reflect"
"runtime"
"strconv"
"strings"
"sync"
"testing"
"time"
"github.com/golang/protobuf/proto"
"github.com/pingcap/errors"
"github.com/pingcap/failpoint"
"github.com/pingcap/tidb/config"
"github.com/pingcap/tidb/ddl"
"github.com/pingcap/tidb/domain"
"github.com/pingcap/tidb/domain/infosync"
"github.com/pingcap/tidb/errno"
"github.com/pingcap/tidb/executor"
"github.com/pingcap/tidb/expression"
"github.com/pingcap/tidb/infoschema"
"github.com/pingcap/tidb/kv"
"github.com/pingcap/tidb/meta"
"github.com/pingcap/tidb/meta/autoid"
"github.com/pingcap/tidb/parser"
"github.com/pingcap/tidb/parser/auth"
"github.com/pingcap/tidb/parser/model"
"github.com/pingcap/tidb/parser/mysql"
"github.com/pingcap/tidb/parser/terror"
"github.com/pingcap/tidb/planner"
plannercore "github.com/pingcap/tidb/planner/core"
"github.com/pingcap/tidb/session"
"github.com/pingcap/tidb/sessionctx"
"github.com/pingcap/tidb/sessionctx/stmtctx"
"github.com/pingcap/tidb/sessionctx/variable"
"github.com/pingcap/tidb/sessiontxn"
"github.com/pingcap/tidb/statistics"
error2 "github.com/pingcap/tidb/store/driver/error"
"github.com/pingcap/tidb/store/mockstore"
"github.com/pingcap/tidb/table/tables"
"github.com/pingcap/tidb/tablecodec"
"github.com/pingcap/tidb/testkit"
"github.com/pingcap/tidb/testkit/testdata"
"github.com/pingcap/tidb/types"
"github.com/pingcap/tidb/util"
"github.com/pingcap/tidb/util/dbterror"
"github.com/pingcap/tidb/util/memory"
"github.com/pingcap/tidb/util/mock"
"github.com/pingcap/tidb/util/rowcodec"
"github.com/pingcap/tidb/util/sqlexec"
"github.com/pingcap/tidb/util/timeutil"
"github.com/pingcap/tipb/go-tipb"
"github.com/stretchr/testify/require"
"github.com/tikv/client-go/v2/oracle"
"github.com/tikv/client-go/v2/testutils"
)
func checkFileName(s string) bool {
files := []string{
"config.toml",
"meta.txt",
"stats/test.t_dump_single.json",
"schema/test.t_dump_single.schema.txt",
"table_tiflash_replica.txt",
"variables.toml",
"session_bindings.sql",
"global_bindings.sql",
"sql/sql0.sql",
"explain/sql0.txt",
}
for _, f := range files {
if strings.Compare(f, s) == 0 {
return true
}
}
return false
}
func TestPessimisticSelectForUpdate(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("create table t(id int primary key, a int)")
tk.MustExec("insert into t values(1, 1)")
tk.MustExec("begin PESSIMISTIC")
tk.MustQuery("select a from t where id=1 for update").Check(testkit.Rows("1"))
tk.MustExec("update t set a=a+1 where id=1")
tk.MustExec("commit")
tk.MustQuery("select a from t where id=1").Check(testkit.Rows("2"))
}
func TestBind(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists testbind")
tk.MustExec("create table testbind(i int, s varchar(20))")
tk.MustExec("create index index_t on testbind(i,s)")
tk.MustExec("create global binding for select * from testbind using select * from testbind use index for join(index_t)")
require.Len(t, tk.MustQuery("show global bindings").Rows(), 1)
tk.MustExec("create session binding for select * from testbind using select * from testbind use index for join(index_t)")
require.Len(t, tk.MustQuery("show session bindings").Rows(), 1)
tk.MustExec("drop session binding for select * from testbind")
}
func TestChangePumpAndDrainer(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
// change pump or drainer's state need connect to etcd
// so will meet error "URL scheme must be http, https, unix, or unixs: /tmp/tidb"
tk.MustMatchErrMsg("change pump to node_state ='paused' for node_id 'pump1'", "URL scheme must be http, https, unix, or unixs.*")
tk.MustMatchErrMsg("change drainer to node_state ='paused' for node_id 'drainer1'", "URL scheme must be http, https, unix, or unixs.*")
}
func TestLoadStats(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
require.Error(t, tk.ExecToErr("load stats"))
require.Error(t, tk.ExecToErr("load stats ./xxx.json"))
}
func TestPlanReplayer(t *testing.T) {
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/infoschema/mockTiFlashStoreCount", `return(true)`))
defer func() {
require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/infoschema/mockTiFlashStoreCount"))
}()
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t(a int, b int, index idx_a(a))")
tk.MustExec("alter table t set tiflash replica 1")
tk.MustQuery("plan replayer dump explain select * from t where a=10")
tk.MustQuery("plan replayer dump explain select /*+ read_from_storage(tiflash[t]) */ * from t")
tk.MustExec("create table t1 (a int)")
tk.MustExec("create table t2 (a int)")
tk.MustExec("create definer=`root`@`127.0.0.1` view v1 as select * from t1")
tk.MustExec("create definer=`root`@`127.0.0.1` view v2 as select * from v1")
tk.MustQuery("plan replayer dump explain with tmp as (select a from t1 group by t1.a) select * from tmp, t2 where t2.a=tmp.a;")
tk.MustQuery("plan replayer dump explain select * from t1 where t1.a > (with cte1 as (select 1) select count(1) from cte1);")
tk.MustQuery("plan replayer dump explain select * from v1")
tk.MustQuery("plan replayer dump explain select * from v2")
require.True(t, len(tk.Session().GetSessionVars().LastPlanReplayerToken) > 0)
// clear the status table and assert
tk.MustExec("delete from mysql.plan_replayer_status")
tk.MustQuery("plan replayer dump explain select * from v2")
token := tk.Session().GetSessionVars().LastPlanReplayerToken
rows := tk.MustQuery(fmt.Sprintf("select * from mysql.plan_replayer_status where token = '%v'", token)).Rows()
require.Len(t, rows, 1)
}
func TestPlanReplayerCapture(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("plan replayer capture '123' '123';")
tk.MustQuery("select sql_digest, plan_digest from mysql.plan_replayer_task;").Check(testkit.Rows("123 123"))
tk.MustGetErrMsg("plan replayer capture '123' '123';", "plan replayer capture task already exists")
}
func TestShow(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("create database test_show;")
tk.MustExec("use test_show")
tk.MustQuery("show engines")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t(a int primary key)")
require.Len(t, tk.MustQuery("show index in t").Rows(), 1)
require.Len(t, tk.MustQuery("show index from t").Rows(), 1)
require.Len(t, tk.MustQuery("show master status").Rows(), 1)
tk.MustQuery("show create database test_show").Check(testkit.Rows("test_show CREATE DATABASE `test_show` /*!40100 DEFAULT CHARACTER SET utf8mb4 */"))
tk.MustQuery("show privileges").Check(testkit.Rows("Alter Tables To alter the table",
"Alter routine Functions,Procedures To alter or drop stored functions/procedures",
"Create Databases,Tables,Indexes To create new databases and tables",
"Create routine Databases To use CREATE FUNCTION/PROCEDURE",
"Create temporary tables Databases To use CREATE TEMPORARY TABLE",
"Create view Tables To create new views",
"Create user Server Admin To create new users",
"Delete Tables To delete existing rows",
"Drop Databases,Tables To drop databases, tables, and views",
"Event Server Admin To create, alter, drop and execute events",
"Execute Functions,Procedures To execute stored routines",
"File File access on server To read and write files on the server",
"Grant option Databases,Tables,Functions,Procedures To give to other users those privileges you possess",
"Index Tables To create or drop indexes",
"Insert Tables To insert data into tables",
"Lock tables Databases To use LOCK TABLES (together with SELECT privilege)",
"Process Server Admin To view the plain text of currently executing queries",
"Proxy Server Admin To make proxy user possible",
"References Databases,Tables To have references on tables",
"Reload Server Admin To reload or refresh tables, logs and privileges",
"Replication client Server Admin To ask where the slave or master servers are",
"Replication slave Server Admin To read binary log events from the master",
"Select Tables To retrieve rows from table",
"Show databases Server Admin To see all databases with SHOW DATABASES",
"Show view Tables To see views with SHOW CREATE VIEW",
"Shutdown Server Admin To shut down the server",
"Super Server Admin To use KILL thread, SET GLOBAL, CHANGE MASTER, etc.",
"Trigger Tables To use triggers",
"Create tablespace Server Admin To create/alter/drop tablespaces",
"Update Tables To update existing rows",
"Usage Server Admin No privileges - allow connect only",
"BACKUP_ADMIN Server Admin ",
"RESTORE_ADMIN Server Admin ",
"SYSTEM_USER Server Admin ",
"SYSTEM_VARIABLES_ADMIN Server Admin ",
"ROLE_ADMIN Server Admin ",
"CONNECTION_ADMIN Server Admin ",
"PLACEMENT_ADMIN Server Admin ",
"DASHBOARD_CLIENT Server Admin ",
"RESTRICTED_TABLES_ADMIN Server Admin ",
"RESTRICTED_STATUS_ADMIN Server Admin ",
"RESTRICTED_VARIABLES_ADMIN Server Admin ",
"RESTRICTED_USER_ADMIN Server Admin ",
"RESTRICTED_CONNECTION_ADMIN Server Admin ",
"RESTRICTED_REPLICA_WRITER_ADMIN Server Admin ",
))
require.Len(t, tk.MustQuery("show table status").Rows(), 1)
}
func TestSelectWithoutFrom(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustQuery("select 1 + 2*3;").Check(testkit.Rows("7"))
tk.MustQuery(`select _utf8"string";`).Check(testkit.Rows("string"))
tk.MustQuery("select 1 order by 1;").Check(testkit.Rows("1"))
tk.MustQuery("SELECT 'a' as f1 having f1 = 'a';").Check(testkit.Rows("a"))
tk.MustQuery("SELECT (SELECT * FROM (SELECT 'a') t) AS f1 HAVING (f1 = 'a' OR TRUE);").Check(testkit.Rows("a"))
tk.MustQuery("SELECT (SELECT * FROM (SELECT 'a') t) + 1 AS f1 HAVING (f1 = 'a' OR TRUE)").Check(testkit.Rows("1"))
}
// TestSelectBackslashN Issue 3685.
func TestSelectBackslashN(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
sql := `select \N;`
tk.MustQuery(sql).Check(testkit.Rows("<nil>"))
rs, err := tk.Exec(sql)
require.NoError(t, err)
fields := rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "NULL", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select "\N";`
tk.MustQuery(sql).Check(testkit.Rows("N"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `N`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
tk.MustExec("use test;")
tk.MustExec("create table test (`\\N` int);")
tk.MustExec("insert into test values (1);")
tk.CheckExecResult(1, 0)
sql = "select * from test;"
tk.MustQuery(sql).Check(testkit.Rows("1"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `\N`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select \N from test;`
tk.MustQuery(sql).Check(testkit.Rows("<nil>"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.NoError(t, err)
require.Len(t, fields, 1)
require.Equal(t, `NULL`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select (\N) from test;`
tk.MustQuery(sql).Check(testkit.Rows("<nil>"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `NULL`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = "select `\\N` from test;"
tk.MustQuery(sql).Check(testkit.Rows("1"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `\N`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = "select (`\\N`) from test;"
tk.MustQuery(sql).Check(testkit.Rows("1"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `\N`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select '\N' from test;`
tk.MustQuery(sql).Check(testkit.Rows("N"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `N`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select ('\N') from test;`
tk.MustQuery(sql).Check(testkit.Rows("N"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `N`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
}
// TestSelectNull Issue #4053.
func TestSelectNull(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
sql := `select nUll;`
tk.MustQuery(sql).Check(testkit.Rows("<nil>"))
rs, err := tk.Exec(sql)
require.NoError(t, err)
fields := rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `NULL`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select (null);`
tk.MustQuery(sql).Check(testkit.Rows("<nil>"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `NULL`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select null+NULL;`
tk.MustQuery(sql).Check(testkit.Rows("<nil>"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.NoError(t, err)
require.Len(t, fields, 1)
require.Equal(t, `null+NULL`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
}
// TestSelectStringLiteral Issue #3686.
func TestSelectStringLiteral(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
sql := `select 'abc';`
tk.MustQuery(sql).Check(testkit.Rows("abc"))
rs, err := tk.Exec(sql)
require.NoError(t, err)
fields := rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `abc`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select (('abc'));`
tk.MustQuery(sql).Check(testkit.Rows("abc"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `abc`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select 'abc'+'def';`
tk.MustQuery(sql).Check(testkit.Rows("0"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, `'abc'+'def'`, fields[0].Column.Name.O)
require.NoError(t, rs.Close())
// Below checks whether leading invalid chars are trimmed.
sql = "select '\n';"
tk.MustQuery(sql).Check(testkit.Rows("\n"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = "select '\t col';" // Lowercased letter is a valid char.
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "col", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = "select '\t Col';" // Uppercased letter is a valid char.
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "Col", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = "select '\n\t 中文 col';" // Chinese char is a valid char.
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "中文 col", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = "select ' \r\n .col';" // Punctuation is a valid char.
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, ".col", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = "select ' 😆col';" // Emoji is a valid char.
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "😆col", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
// Below checks whether trailing invalid chars are preserved.
sql = `select 'abc ';`
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "abc ", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select ' abc 123 ';`
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "abc 123 ", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
// Issue #4239.
sql = `select 'a' ' ' 'string';`
tk.MustQuery(sql).Check(testkit.Rows("a string"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "a", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select 'a' " " "string";`
tk.MustQuery(sql).Check(testkit.Rows("a string"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "a", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select 'string' 'string';`
tk.MustQuery(sql).Check(testkit.Rows("stringstring"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "string", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select "ss" "a";`
tk.MustQuery(sql).Check(testkit.Rows("ssa"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "ss", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select "ss" "a" "b";`
tk.MustQuery(sql).Check(testkit.Rows("ssab"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "ss", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select "ss" "a" ' ' "b";`
tk.MustQuery(sql).Check(testkit.Rows("ssa b"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "ss", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
sql = `select "ss" "a" ' ' "b" ' ' "d";`
tk.MustQuery(sql).Check(testkit.Rows("ssa b d"))
rs, err = tk.Exec(sql)
require.NoError(t, err)
fields = rs.Fields()
require.Len(t, fields, 1)
require.Equal(t, "ss", fields[0].Column.Name.O)
require.NoError(t, rs.Close())
}
func TestSelectLimit(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("create table select_limit(id int not null default 1, name varchar(255), PRIMARY KEY(id));")
// insert data
tk.MustExec("insert INTO select_limit VALUES (1, \"hello\");")
tk.CheckExecResult(1, 0)
tk.MustExec("insert into select_limit values (2, \"hello\");")
tk.CheckExecResult(1, 0)
tk.MustExec("insert INTO select_limit VALUES (3, \"hello\");")
tk.CheckExecResult(1, 0)
tk.MustExec("insert INTO select_limit VALUES (4, \"hello\");")
tk.CheckExecResult(1, 0)
tk.MustQuery("select * from select_limit limit 1;").Check(testkit.Rows("1 hello"))
tk.MustQuery("select id from (select * from select_limit limit 1) k where id != 1;").Check(testkit.Rows())
tk.MustQuery("select * from select_limit limit 18446744073709551615 offset 0;").Check(testkit.Rows("1 hello", "2 hello", "3 hello", "4 hello"))
tk.MustQuery("select * from select_limit limit 18446744073709551615 offset 1;").Check(testkit.Rows("2 hello", "3 hello", "4 hello"))
tk.MustQuery("select * from select_limit limit 18446744073709551615 offset 3;").Check(testkit.Rows("4 hello"))
err := tk.ExecToErr("select * from select_limit limit 18446744073709551616 offset 3;")
require.Error(t, err)
}
func TestSelectOrderBy(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("create table select_order_test(id int not null default 1, name varchar(255), PRIMARY KEY(id));")
// insert data
tk.MustExec("insert INTO select_order_test VALUES (1, \"hello\");")
tk.CheckExecResult(1, 0)
tk.MustExec("insert into select_order_test values (2, \"hello\");")
tk.CheckExecResult(1, 0)
// Test star field
tk.MustQuery("select * from select_order_test where id = 1 order by id limit 1 offset 0;").Check(testkit.Rows("1 hello"))
tk.MustQuery("select id from select_order_test order by id desc limit 1 ").Check(testkit.Rows("2"))
tk.MustQuery("select id from select_order_test order by id + 1 desc limit 1 ").Check(testkit.Rows("2"))
// Test limit
tk.MustQuery("select * from select_order_test order by name, id limit 1 offset 0;").Check(testkit.Rows("1 hello"))
// Test limit
tk.MustQuery("select id as c1, name from select_order_test order by 2, id limit 1 offset 0;").Check(testkit.Rows("1 hello"))
// Test limit overflow
tk.MustQuery("select * from select_order_test order by name, id limit 100 offset 0;").Check(testkit.Rows("1 hello", "2 hello"))
// Test offset overflow
tk.MustQuery("select * from select_order_test order by name, id limit 1 offset 100;").Check(testkit.Rows())
// Test limit exceeds int range.
tk.MustQuery("select id from select_order_test order by name, id limit 18446744073709551615;").Check(testkit.Rows("1", "2"))
// Test multiple field
tk.MustQuery("select id, name from select_order_test where id = 1 group by id, name limit 1 offset 0;").Check(testkit.Rows("1 hello"))
// Test limit + order by
for i := 3; i <= 10; i += 1 {
tk.MustExec(fmt.Sprintf("insert INTO select_order_test VALUES (%d, \"zz\");", i))
}
tk.MustExec("insert INTO select_order_test VALUES (10086, \"hi\");")
for i := 11; i <= 20; i += 1 {
tk.MustExec(fmt.Sprintf("insert INTO select_order_test VALUES (%d, \"hh\");", i))
}
for i := 21; i <= 30; i += 1 {
tk.MustExec(fmt.Sprintf("insert INTO select_order_test VALUES (%d, \"zz\");", i))
}
tk.MustExec("insert INTO select_order_test VALUES (1501, \"aa\");")
tk.MustQuery("select * from select_order_test order by name, id limit 1 offset 3;").Check(testkit.Rows("11 hh"))
tk.MustExec("drop table select_order_test")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (c int, d int)")
tk.MustExec("insert t values (1, 1)")
tk.MustExec("insert t values (1, 2)")
tk.MustExec("insert t values (1, 3)")
tk.MustQuery("select 1-d as d from t order by d;").Check(testkit.Rows("-2", "-1", "0"))
tk.MustQuery("select 1-d as d from t order by d + 1;").Check(testkit.Rows("0", "-1", "-2"))
tk.MustQuery("select t.d from t order by d;").Check(testkit.Rows("1", "2", "3"))
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (a int, b int, c int)")
tk.MustExec("insert t values (1, 2, 3)")
tk.MustQuery("select b from (select a,b from t order by a,c) t").Check(testkit.Rows("2"))
tk.MustQuery("select b from (select a,b from t order by a,c limit 1) t").Check(testkit.Rows("2"))
tk.MustExec("drop table if exists t")
tk.MustExec("create table t(a int, b int, index idx(a))")
tk.MustExec("insert into t values(1, 1), (2, 2)")
tk.MustQuery("select * from t where 1 order by b").Check(testkit.Rows("1 1", "2 2"))
tk.MustQuery("select * from t where a between 1 and 2 order by a desc").Check(testkit.Rows("2 2", "1 1"))
// Test double read and topN is pushed down to first read plannercore.
tk.MustExec("drop table if exists t")
tk.MustExec("create table t(a int primary key, b int, c int, index idx(b))")
tk.MustExec("insert into t values(1, 3, 1)")
tk.MustExec("insert into t values(2, 2, 2)")
tk.MustExec("insert into t values(3, 1, 3)")
tk.MustQuery("select * from t use index(idx) order by a desc limit 1").Check(testkit.Rows("3 1 3"))
// Test double read which needs to keep order.
tk.MustExec("drop table if exists t")
tk.MustExec("create table t(a int, b int, key b (b))")
tk.Session().GetSessionVars().IndexLookupSize = 3
for i := 0; i < 10; i++ {
tk.MustExec(fmt.Sprintf("insert into t values(%d, %d)", i, 10-i))
}
tk.MustQuery("select a from t use index(b) order by b").Check(testkit.Rows("9", "8", "7", "6", "5", "4", "3", "2", "1", "0"))
}
func TestOrderBy(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("create table t (c1 int, c2 int, c3 varchar(20))")
tk.MustExec("insert into t values (1, 2, 'abc'), (2, 1, 'bcd')")
// Fix issue https://github.com/pingcap/tidb/issues/337
tk.MustQuery("select c1 as a, c1 as b from t order by c1").Check(testkit.Rows("1 1", "2 2"))
tk.MustQuery("select c1 as a, t.c1 as a from t order by a desc").Check(testkit.Rows("2 2", "1 1"))
tk.MustQuery("select c1 as c2 from t order by c2").Check(testkit.Rows("1", "2"))
tk.MustQuery("select sum(c1) from t order by sum(c1)").Check(testkit.Rows("3"))
tk.MustQuery("select c1 as c2 from t order by c2 + 1").Check(testkit.Rows("2", "1"))
// Order by position.
tk.MustQuery("select * from t order by 1").Check(testkit.Rows("1 2 abc", "2 1 bcd"))
tk.MustQuery("select * from t order by 2").Check(testkit.Rows("2 1 bcd", "1 2 abc"))
// Order by binary.
tk.MustQuery("select c1, c3 from t order by binary c1 desc").Check(testkit.Rows("2 bcd", "1 abc"))
tk.MustQuery("select c1, c2 from t order by binary c3").Check(testkit.Rows("1 2", "2 1"))
}
func TestSelectErrorRow(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
require.Error(t, tk.ExecToErr("select row(1, 1) from test"))
require.Error(t, tk.ExecToErr("select * from test group by row(1, 1);"))
require.Error(t, tk.ExecToErr("select * from test order by row(1, 1);"))
require.Error(t, tk.ExecToErr("select * from test having row(1, 1);"))
require.Error(t, tk.ExecToErr("select (select 1, 1) from test;"))
require.Error(t, tk.ExecToErr("select * from test group by (select 1, 1);"))
require.Error(t, tk.ExecToErr("select * from test order by (select 1, 1);"))
require.Error(t, tk.ExecToErr("select * from test having (select 1, 1);"))
}
func TestNeighbouringProj(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("create table t1(a int, b int)")
tk.MustExec("create table t2(a int, b int)")
tk.MustExec("insert into t1 value(1, 1), (2, 2)")
tk.MustExec("insert into t2 value(1, 1), (2, 2)")
tk.MustQuery("select sum(c) from (select t1.a as a, t1.a as c, length(t1.b) from t1 union select a, b, b from t2) t;").Check(testkit.Rows("5"))
tk.MustExec("drop table if exists t")
tk.MustExec("create table t(a bigint, b bigint, c bigint);")
tk.MustExec("insert into t values(1, 1, 1), (2, 2, 2), (3, 3, 3);")
tk.MustQuery("select cast(count(a) as signed), a as another, a from t group by a order by cast(count(a) as signed), a limit 10;").Check(testkit.Rows("1 1 1", "1 2 2", "1 3 3"))
}
func TestIn(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec(`drop table if exists t`)
tk.MustExec(`create table t (c1 int primary key, c2 int, key c (c2));`)
for i := 0; i <= 200; i++ {
tk.MustExec(fmt.Sprintf("insert t values(%d, %d)", i, i))
}
queryStr := `select c2 from t where c1 in ('7', '10', '112', '111', '98', '106', '100', '9', '18', '17') order by c2`
tk.MustQuery(queryStr).Check(testkit.Rows("7", "9", "10", "17", "18", "98", "100", "106", "111", "112"))
queryStr = `select c2 from t where c1 in ('7a')`
tk.MustQuery(queryStr).Check(testkit.Rows("7"))
}
func TestTablePKisHandleScan(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (a int PRIMARY KEY AUTO_INCREMENT)")
tk.MustExec("insert t values (),()")
tk.MustExec("insert t values (-100),(0)")
tests := []struct {
sql string
result [][]interface{}
}{
{
"select * from t",
testkit.Rows("-100", "1", "2", "3"),
},
{
"select * from t where a = 1",
testkit.Rows("1"),
},
{
"select * from t where a != 1",
testkit.Rows("-100", "2", "3"),
},
{
"select * from t where a >= '1.1'",
testkit.Rows("2", "3"),
},
{
"select * from t where a < '1.1'",
testkit.Rows("-100", "1"),
},
{
"select * from t where a > '-100.1' and a < 2",
testkit.Rows("-100", "1"),
},
{
"select * from t where a is null",
testkit.Rows(),
}, {
"select * from t where a is true",
testkit.Rows("-100", "1", "2", "3"),
}, {
"select * from t where a is false",
testkit.Rows(),
},
{
"select * from t where a in (1, 2)",
testkit.Rows("1", "2"),
},
{
"select * from t where a between 1 and 2",
testkit.Rows("1", "2"),
},
}
for _, tt := range tests {
tk.MustQuery(tt.sql).Check(tt.result)
}
}
func TestIndexReverseOrder(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (a int primary key auto_increment, b int, index idx (b))")
tk.MustExec("insert t (b) values (0), (1), (2), (3), (4), (5), (6), (7), (8), (9)")
tk.MustQuery("select b from t order by b desc").Check(testkit.Rows("9", "8", "7", "6", "5", "4", "3", "2", "1", "0"))
tk.MustQuery("select b from t where b <3 or (b >=6 and b < 8) order by b desc").Check(testkit.Rows("7", "6", "2", "1", "0"))
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (a int, b int, index idx (b, a))")
tk.MustExec("insert t values (0, 2), (1, 2), (2, 2), (0, 1), (1, 1), (2, 1), (0, 0), (1, 0), (2, 0)")
tk.MustQuery("select b, a from t order by b, a desc").Check(testkit.Rows("0 2", "0 1", "0 0", "1 2", "1 1", "1 0", "2 2", "2 1", "2 0"))
}
func TestTableReverseOrder(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (a int primary key auto_increment, b int)")
tk.MustExec("insert t (b) values (1), (2), (3), (4), (5), (6), (7), (8), (9)")
tk.MustQuery("select b from t order by a desc").Check(testkit.Rows("9", "8", "7", "6", "5", "4", "3", "2", "1"))
tk.MustQuery("select a from t where a <3 or (a >=6 and a < 8) order by a desc").Check(testkit.Rows("7", "6", "2", "1"))
}
func TestDefaultNull(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (a int primary key auto_increment, b int default 1, c int)")
tk.MustExec("insert t values ()")
tk.MustQuery("select * from t").Check(testkit.Rows("1 1 <nil>"))
tk.MustExec("update t set b = NULL where a = 1")
tk.MustQuery("select * from t").Check(testkit.Rows("1 <nil> <nil>"))
tk.MustExec("update t set c = 1")
tk.MustQuery("select * from t ").Check(testkit.Rows("1 <nil> 1"))
tk.MustExec("delete from t where a = 1")
tk.MustExec("insert t (a) values (1)")
tk.MustQuery("select * from t").Check(testkit.Rows("1 1 <nil>"))
}
func TestUnsignedPKColumn(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (a int unsigned primary key, b int, c int, key idx_ba (b, c, a));")
tk.MustExec("insert t values (1, 1, 1)")
tk.MustQuery("select * from t;").Check(testkit.Rows("1 1 1"))
tk.MustExec("update t set c=2 where a=1;")
tk.MustQuery("select * from t where b=1;").Check(testkit.Rows("1 1 2"))
}
func TestJSON(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists test_json")
tk.MustExec("create table test_json (id int, a json)")
tk.MustExec(`insert into test_json (id, a) values (1, '{"a":[1,"2",{"aa":"bb"},4],"b":true}')`)
tk.MustExec(`insert into test_json (id, a) values (2, "null")`)
tk.MustExec(`insert into test_json (id, a) values (3, null)`)
tk.MustExec(`insert into test_json (id, a) values (4, 'true')`)
tk.MustExec(`insert into test_json (id, a) values (5, '3')`)
tk.MustExec(`insert into test_json (id, a) values (5, '4.0')`)
tk.MustExec(`insert into test_json (id, a) values (6, '"string"')`)
tk.MustQuery(`select tj.a from test_json tj order by tj.id`).Check(testkit.Rows(`{"a": [1, "2", {"aa": "bb"}, 4], "b": true}`, "null", "<nil>", "true", "3", "4", `"string"`))
// Check json_type function
tk.MustQuery(`select json_type(a) from test_json tj order by tj.id`).Check(testkit.Rows("OBJECT", "NULL", "<nil>", "BOOLEAN", "INTEGER", "DOUBLE", "STRING"))
// Check json compare with primitives.
tk.MustQuery(`select a from test_json tj where a = 3`).Check(testkit.Rows("3"))
tk.MustQuery(`select a from test_json tj where a = 4.0`).Check(testkit.Rows("4"))
tk.MustQuery(`select a from test_json tj where a = true`).Check(testkit.Rows("true"))
tk.MustQuery(`select a from test_json tj where a = "string"`).Check(testkit.Rows(`"string"`))
// Check cast(true/false as JSON).
tk.MustQuery(`select cast(true as JSON)`).Check(testkit.Rows(`true`))
tk.MustQuery(`select cast(false as JSON)`).Check(testkit.Rows(`false`))
// Check two json grammar sugar.
tk.MustQuery(`select a->>'$.a[2].aa' as x, a->'$.b' as y from test_json having x is not null order by id`).Check(testkit.Rows(`bb true`))
tk.MustQuery(`select a->'$.a[2].aa' as x, a->>'$.b' as y from test_json having x is not null order by id`).Check(testkit.Rows(`"bb" true`))
// Check some DDL limits for TEXT/BLOB/JSON column.
tk.MustGetErrCode(`create table test_bad_json(a json default '{}')`, mysql.ErrBlobCantHaveDefault)
tk.MustGetErrCode(`create table test_bad_json(a blob default 'hello')`, mysql.ErrBlobCantHaveDefault)
tk.MustGetErrCode(`create table test_bad_json(a text default 'world')`, mysql.ErrBlobCantHaveDefault)
// check json fields cannot be used as key.
tk.MustGetErrCode(`create table test_bad_json(id int, a json, key (a))`, mysql.ErrJSONUsedAsKey)
// check CAST AS JSON.
tk.MustQuery(`select CAST('3' AS JSON), CAST('{}' AS JSON), CAST(null AS JSON)`).Check(testkit.Rows(`3 {} <nil>`))
//nolint:revive,all_revive
tk.MustQuery("select a, count(1) from test_json group by a order by a").Check(testkit.Rows(
"<nil> 1",
"null 1",
"3 1",
"4 1",
`"string" 1`,
"{\"a\": [1, \"2\", {\"aa\": \"bb\"}, 4], \"b\": true} 1",
"true 1"))
// Check cast json to decimal.
// NOTE: this test case contains a bug, it should be uncommented after the bug is fixed.
// TODO: Fix bug https://github.com/pingcap/tidb/issues/12178
// tk.MustExec("drop table if exists test_json")
// tk.MustExec("create table test_json ( a decimal(60,2) as (JSON_EXTRACT(b,'$.c')), b json );")
// tk.MustExec(`insert into test_json (b) values
// ('{"c": "1267.1"}'),
// ('{"c": "1267.01"}'),
// ('{"c": "1267.1234"}'),
// ('{"c": "1267.3456"}'),
// ('{"c": "1234567890123456789012345678901234567890123456789012345"}'),
// ('{"c": "1234567890123456789012345678901234567890123456789012345.12345"}');`)
//
// tk.MustQuery("select a from test_json;").Check(testkit.Rows("1267.10", "1267.01", "1267.12",
// "1267.35", "1234567890123456789012345678901234567890123456789012345.00",
// "1234567890123456789012345678901234567890123456789012345.12"))
}
func TestMultiUpdate(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec(`CREATE TABLE test_mu (a int primary key, b int, c int)`)
tk.MustExec(`INSERT INTO test_mu VALUES (1, 2, 3), (4, 5, 6), (7, 8, 9)`)
// Test INSERT ... ON DUPLICATE UPDATE set_lists.
tk.MustExec(`INSERT INTO test_mu VALUES (1, 2, 3) ON DUPLICATE KEY UPDATE b = 3, c = b`)
tk.MustQuery(`SELECT * FROM test_mu ORDER BY a`).Check(testkit.Rows(`1 3 3`, `4 5 6`, `7 8 9`))
tk.MustExec(`INSERT INTO test_mu VALUES (1, 2, 3) ON DUPLICATE KEY UPDATE c = 2, b = c+5`)
tk.MustQuery(`SELECT * FROM test_mu ORDER BY a`).Check(testkit.Rows(`1 7 2`, `4 5 6`, `7 8 9`))
// Test UPDATE ... set_lists.
tk.MustExec(`UPDATE test_mu SET b = 0, c = b WHERE a = 4`)
tk.MustQuery(`SELECT * FROM test_mu ORDER BY a`).Check(testkit.Rows(`1 7 2`, `4 0 5`, `7 8 9`))
tk.MustExec(`UPDATE test_mu SET c = 8, b = c WHERE a = 4`)
tk.MustQuery(`SELECT * FROM test_mu ORDER BY a`).Check(testkit.Rows(`1 7 2`, `4 5 8`, `7 8 9`))
tk.MustExec(`UPDATE test_mu SET c = b, b = c WHERE a = 7`)
tk.MustQuery(`SELECT * FROM test_mu ORDER BY a`).Check(testkit.Rows(`1 7 2`, `4 5 8`, `7 9 8`))
}
func TestGeneratedColumnWrite(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustGetErrMsg(`CREATE TABLE test_gc_write (a int primary key auto_increment, b int, c int as (a+8) virtual)`, dbterror.ErrGeneratedColumnRefAutoInc.GenWithStackByArgs("c").Error())
tk.MustExec(`CREATE TABLE test_gc_write (a int primary key auto_increment, b int, c int as (b+8) virtual)`)
tk.MustExec(`CREATE TABLE test_gc_write_1 (a int primary key, b int, c int)`)
tests := []struct {
stmt string
err int
}{
// Can't modify generated column by values.
{`insert into test_gc_write (a, b, c) values (1, 1, 1)`, mysql.ErrBadGeneratedColumn},
{`insert into test_gc_write values (1, 1, 1)`, mysql.ErrBadGeneratedColumn},
// Can't modify generated column by select clause.
{`insert into test_gc_write select 1, 1, 1`, mysql.ErrBadGeneratedColumn},
// Can't modify generated column by on duplicate clause.
{`insert into test_gc_write (a, b) values (1, 1) on duplicate key update c = 1`, mysql.ErrBadGeneratedColumn},
// Can't modify generated column by set.
{`insert into test_gc_write set a = 1, b = 1, c = 1`, mysql.ErrBadGeneratedColumn},
// Can't modify generated column by update clause.
{`update test_gc_write set c = 1`, mysql.ErrBadGeneratedColumn},
// Can't modify generated column by multi-table update clause.
{`update test_gc_write, test_gc_write_1 set test_gc_write.c = 1`, mysql.ErrBadGeneratedColumn},
// Can insert without generated columns.
{`insert into test_gc_write (a, b) values (1, 1)`, 0},
{`insert into test_gc_write set a = 2, b = 2`, 0},
{`insert into test_gc_write (b) select c from test_gc_write`, 0},
// Can update without generated columns.
{`update test_gc_write set b = 2 where a = 2`, 0},
{`update test_gc_write t1, test_gc_write_1 t2 set t1.b = 3, t2.b = 4`, 0},
// But now we can't do this, just as same with MySQL 5.7:
{`insert into test_gc_write values (1, 1)`, mysql.ErrWrongValueCountOnRow},
{`insert into test_gc_write select 1, 1`, mysql.ErrWrongValueCountOnRow},
{`insert into test_gc_write (c) select a, b from test_gc_write`, mysql.ErrWrongValueCountOnRow},
{`insert into test_gc_write (b, c) select a, b from test_gc_write`, mysql.ErrBadGeneratedColumn},
}
for _, tt := range tests {
if tt.err != 0 {
tk.MustGetErrCode(tt.stmt, tt.err)
} else {
tk.MustExec(tt.stmt)
}
}
}
// TestGeneratedColumnRead tests select generated columns from table.
// They should be calculated from their generation expressions.
func TestGeneratedColumnRead(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)