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
|
connect disable_purge,localhost,root,,;
# Disable the purge of InnoDB history, to make the test run faster.
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
SET DEFAULT_STORAGE_ENGINE = InnoDB;
set @optimizer_switch_save= @@optimizer_switch;
set optimizer_switch='index_merge_sort_intersection=off';
set optimizer_switch='rowid_filter=off';
SET @save_stats_persistent=@@GLOBAL.innodb_stats_persistent;
SET GLOBAL innodb_stats_persistent=0;
#---------------- Index merge test 2 -------------------------------------------
create table t1
(
key1 int not null,
key2 int not null,
INDEX i1(key1),
INDEX i2(key2)
);
INSERT INTO t1 SELECT seq,200-seq FROM seq_0_to_200;
explain select * from t1 where key1 < 5 or key2 > 197;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge i1,i2 i1,i2 4,4 NULL 8 Using sort_union(i1,i2); Using where
select * from t1 where key1 < 5 or key2 > 197;
key1 key2
0 200
1 199
2 198
3 197
4 196
explain select * from t1 where key1 < 3 or key2 > 195;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge i1,i2 i1,i2 4,4 NULL 8 Using sort_union(i1,i2); Using where
select * from t1 where key1 < 3 or key2 > 195;
key1 key2
0 200
1 199
2 198
3 197
4 196
alter table t1 add str1 char (255) not null,
add zeroval int not null default 0,
add str2 char (255) not null,
add str3 char (255) not null;
update t1 set str1='aaa', str2='bbb', str3=concat(key2, '-', key1 div 2, '_' ,if(key1 mod 2 = 0, 'a', 'A'));
alter table t1 add primary key (str1, zeroval, str2, str3);
explain select * from t1 where key1 < 5 or key2 > 197;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge i1,i2 i1,i2 4,4 NULL 8 Using sort_union(i1,i2); Using where
select * from t1 where key1 < 5 or key2 > 197;
key1 key2 str1 zeroval str2 str3
4 196 aaa 0 bbb 196-2_a
3 197 aaa 0 bbb 197-1_A
2 198 aaa 0 bbb 198-1_a
1 199 aaa 0 bbb 199-0_A
0 200 aaa 0 bbb 200-0_a
explain select * from t1 where key1 < 3 or key2 > 195;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge i1,i2 i1,i2 4,4 NULL 8 Using sort_union(i1,i2); Using where
select * from t1 where key1 < 3 or key2 > 195;
key1 key2 str1 zeroval str2 str3
4 196 aaa 0 bbb 196-2_a
3 197 aaa 0 bbb 197-1_A
2 198 aaa 0 bbb 198-1_a
1 199 aaa 0 bbb 199-0_A
0 200 aaa 0 bbb 200-0_a
drop table t1;
create table t1 (
pk integer not null auto_increment primary key,
key1 integer,
key2 integer not null,
filler char (200),
index (key1),
index (key2)
);
show warnings;
Level Code Message
INSERT INTO t1 (key1, key2, filler)
SELECT seq/4, seq/8, 'filler-data' FROM seq_30_to_0;
explain select pk from t1 where key1 = 1 and key2 = 1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge key1,key2 key1,key2 5,4 NULL 1 Using intersect(key1,key2); Using where; Using index
select pk from t1 where key2 = 1 and key1 = 1;
pk
26
27
select pk from t1 ignore index(key1,key2) where key2 = 1 and key1 = 1;
pk
26
27
drop table t1;
create table t1 (
pk int primary key auto_increment,
key1a int,
key2a int,
key1b int,
key2b int,
dummy1 int,
dummy2 int,
dummy3 int,
dummy4 int,
key3a int,
key3b int,
filler1 char (200),
index i1(key1a, key1b),
index i2(key2a, key2b),
index i3(key3a, key3b)
);
create table t2 (a int);
insert into t2 values (0),(1),(2),(3),(4),(NULL);
insert into t1 (key1a, key1b, key2a, key2b, key3a, key3b)
select A.a, B.a, C.a, D.a, C.a, D.a from t2 A,t2 B,t2 C, t2 D;
insert into t1 (key1a, key1b, key2a, key2b, key3a, key3b)
select key1a, key1b, key2a, key2b, key3a, key3b from t1;
insert into t1 (key1a, key1b, key2a, key2b, key3a, key3b)
select key1a, key1b, key2a, key2b, key3a, key3b from t1;
analyze table t1;
Table Op Msg_type Msg_text
test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
select count(*) from t1;
count(*)
5184
explain select count(*) from t1 where
key1a = 2 and key1b is null and key2a = 2 and key2b is null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge i1,i2 i1,i2 10,10 NULL REF Using intersect(i1,i2); Using where; Using index
select count(*) from t1 where
key1a = 2 and key1b is null and key2a = 2 and key2b is null;
count(*)
4
explain select count(*) from t1 where
key1a = 2 and key1b is null and key3a = 2 and key3b is null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge i1,i3 i1,i3 10,10 NULL REF Using intersect(i1,i3); Using where; Using index
select count(*) from t1 where
key1a = 2 and key1b is null and key3a = 2 and key3b is null;
count(*)
4
drop table t1,t2;
create table t1 (
id1 int,
id2 date ,
index idx2 (id1,id2),
index idx1 (id2)
);
insert into t1 values(1,'20040101'), (2,'20040102');
select * from t1 where id1 = 1 and id2= '20040101';
id1 id2
1 2004-01-01
drop table t1;
drop view if exists v1;
CREATE TABLE t1 (
`oid` int(11) unsigned NOT NULL auto_increment,
`fk_bbk_niederlassung` int(11) unsigned NOT NULL,
`fk_wochentag` int(11) unsigned NOT NULL,
`uhrzeit_von` time NOT NULL COMMENT 'HH:MM',
`uhrzeit_bis` time NOT NULL COMMENT 'HH:MM',
`geloescht` tinyint(4) NOT NULL,
`version` int(5) NOT NULL,
PRIMARY KEY (`oid`),
KEY `fk_bbk_niederlassung` (`fk_bbk_niederlassung`),
KEY `fk_wochentag` (`fk_wochentag`),
KEY `ix_version` (`version`)
) DEFAULT CHARSET=latin1;
insert into t1 values
(1, 38, 1, '08:00:00', '13:00:00', 0, 1),
(2, 38, 2, '08:00:00', '13:00:00', 0, 1),
(3, 38, 3, '08:00:00', '13:00:00', 0, 1),
(4, 38, 4, '08:00:00', '13:00:00', 0, 1),
(5, 38, 5, '08:00:00', '13:00:00', 0, 1),
(6, 38, 5, '08:00:00', '13:00:00', 1, 2),
(7, 38, 3, '08:00:00', '13:00:00', 1, 2),
(8, 38, 1, '08:00:00', '13:00:00', 1, 2),
(9, 38, 2, '08:00:00', '13:00:00', 1, 2),
(10, 38, 4, '08:00:00', '13:00:00', 1, 2),
(11, 38, 1, '08:00:00', '13:00:00', 0, 3),
(12, 38, 2, '08:00:00', '13:00:00', 0, 3),
(13, 38, 3, '08:00:00', '13:00:00', 0, 3),
(14, 38, 4, '08:00:00', '13:00:00', 0, 3),
(15, 38, 5, '08:00:00', '13:00:00', 0, 3),
(16, 38, 4, '08:00:00', '13:00:00', 0, 4),
(17, 38, 5, '08:00:00', '13:00:00', 0, 4),
(18, 38, 1, '08:00:00', '13:00:00', 0, 4),
(19, 38, 2, '08:00:00', '13:00:00', 0, 4),
(20, 38, 3, '08:00:00', '13:00:00', 0, 4),
(21, 7, 1, '08:00:00', '13:00:00', 0, 1),
(22, 7, 2, '08:00:00', '13:00:00', 0, 1),
(23, 7, 3, '08:00:00', '13:00:00', 0, 1),
(24, 7, 4, '08:00:00', '13:00:00', 0, 1),
(25, 7, 5, '08:00:00', '13:00:00', 0, 1);
create view v1 as
select
zeit1.oid AS oid,
zeit1.fk_bbk_niederlassung AS fk_bbk_niederlassung,
zeit1.fk_wochentag AS fk_wochentag,
zeit1.uhrzeit_von AS uhrzeit_von,
zeit1.uhrzeit_bis AS uhrzeit_bis,
zeit1.geloescht AS geloescht,
zeit1.version AS version
from
t1 zeit1
where
(zeit1.version =
(select max(zeit2.version) AS `max(version)`
from t1 zeit2
where
((zeit1.fk_bbk_niederlassung = zeit2.fk_bbk_niederlassung) and
(zeit1.fk_wochentag = zeit2.fk_wochentag) and
(zeit1.uhrzeit_von = zeit2.uhrzeit_von) and
(zeit1.uhrzeit_bis = zeit2.uhrzeit_bis)
)
)
)
and (zeit1.geloescht = 0);
select * from v1 where oid = 21;
oid fk_bbk_niederlassung fk_wochentag uhrzeit_von uhrzeit_bis geloescht version
21 7 1 08:00:00 13:00:00 0 1
drop view v1;
drop table t1;
CREATE TABLE t1(
t_cpac varchar(2) NOT NULL,
t_vers varchar(4) NOT NULL,
t_rele varchar(2) NOT NULL,
t_cust varchar(4) NOT NULL,
filler1 char(250) default NULL,
filler2 char(250) default NULL,
PRIMARY KEY (t_cpac,t_vers,t_rele,t_cust),
UNIQUE KEY IX_4 (t_cust,t_cpac,t_vers,t_rele),
KEY IX_5 (t_vers,t_rele,t_cust)
);
insert into t1 values
('tm','2.5 ','a ',' ','',''), ('tm','2.5U','a ','stnd','',''),
('da','3.3 ','b ',' ','',''), ('da','3.3U','b ','stnd','',''),
('tl','7.6 ','a ',' ','',''), ('tt','7.6 ','a ',' ','',''),
('bc','B61 ','a ',' ','',''), ('bp','B61 ','a ',' ','',''),
('ca','B61 ','a ',' ','',''), ('ci','B61 ','a ',' ','',''),
('cp','B61 ','a ',' ','',''), ('dm','B61 ','a ',' ','',''),
('ec','B61 ','a ',' ','',''), ('ed','B61 ','a ',' ','',''),
('fm','B61 ','a ',' ','',''), ('nt','B61 ','a ',' ','',''),
('qm','B61 ','a ',' ','',''), ('tc','B61 ','a ',' ','',''),
('td','B61 ','a ',' ','',''), ('tf','B61 ','a ',' ','',''),
('tg','B61 ','a ',' ','',''), ('ti','B61 ','a ',' ','',''),
('tp','B61 ','a ',' ','',''), ('ts','B61 ','a ',' ','',''),
('wh','B61 ','a ',' ','',''), ('bc','B61U','a ','stnd','',''),
('bp','B61U','a ','stnd','',''), ('ca','B61U','a ','stnd','',''),
('ci','B61U','a ','stnd','',''), ('cp','B61U','a ','stnd','',''),
('dm','B61U','a ','stnd','',''), ('ec','B61U','a ','stnd','',''),
('fm','B61U','a ','stnd','',''), ('nt','B61U','a ','stnd','',''),
('qm','B61U','a ','stnd','',''), ('tc','B61U','a ','stnd','',''),
('td','B61U','a ','stnd','',''), ('tf','B61U','a ','stnd','',''),
('tg','B61U','a ','stnd','',''), ('ti','B61U','a ','stnd','',''),
('tp','B61U','a ','stnd','',''), ('ts','B61U','a ','stnd','',''),
('wh','B61U','a ','stnd','','');
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`t_cpac` varchar(2) NOT NULL,
`t_vers` varchar(4) NOT NULL,
`t_rele` varchar(2) NOT NULL,
`t_cust` varchar(4) NOT NULL,
`filler1` char(250) DEFAULT NULL,
`filler2` char(250) DEFAULT NULL,
PRIMARY KEY (`t_cpac`,`t_vers`,`t_rele`,`t_cust`),
UNIQUE KEY `IX_4` (`t_cust`,`t_cpac`,`t_vers`,`t_rele`),
KEY `IX_5` (`t_vers`,`t_rele`,`t_cust`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
select t_vers,t_rele,t_cust,filler1 from t1 where t_vers = '7.6';
t_vers t_rele t_cust filler1
7.6 a
7.6 a
select t_vers,t_rele,t_cust,filler1 from t1 where t_vers = '7.6'
and t_rele='a' and t_cust = ' ';
t_vers t_rele t_cust filler1
7.6 a
7.6 a
drop table t1;
create table t1 (
pk int(11) not null auto_increment,
a int(11) not null default '0',
b int(11) not null default '0',
c int(11) not null default '0',
filler1 datetime, filler2 varchar(15),
filler3 longtext,
kp1 varchar(4), kp2 varchar(7),
kp3 varchar(2), kp4 varchar(4),
kp5 varchar(7),
filler4 char(1),
primary key (pk),
key idx1(a,b,c),
key idx2(c),
key idx3(kp1,kp2,kp3,kp4,kp5)
) default charset=latin1;
set @fill=NULL;
SELECT COUNT(*) FROM t1 WHERE b = 0 AND a = 0 AND c = 13286427 AND
kp1='279' AND kp2='ELM0678' AND kp3='6' AND kp4='10' AND kp5 = 'R ';
COUNT(*)
1
drop table t1;
create table t1
(
key1 int not null,
key2 int not null default 0,
key3 int not null default 0
);
insert into t1(key1) select seq from seq_1_to_1024;
alter table t1 add index i2(key2);
alter table t1 add index i3(key3);
update t1 set key2=key1,key3=key1;
insert into t1 select 10000+key1, 10000+key2,10000+key3 from t1;
analyze table t1;
Table Op Msg_type Msg_text
test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
explain select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge i2,i3 i3,i2 4,4 NULL REF Using sort_union(i3,i2); Using where
select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);
key1 key2 key3
31 31 31
32 32 32
33 33 33
34 34 34
35 35 35
36 36 36
37 37 37
38 38 38
39 39 39
drop table t1;
#
# Bug#56423: Different count with SELECT and CREATE SELECT queries
#
CREATE TABLE t1 (
a INT,
b INT,
c INT,
d INT,
PRIMARY KEY (a),
KEY (c),
KEY bd (b,d)
);
INSERT INTO t1 VALUES
(1, 0, 1, 0),
(2, 1, 1, 1),
(3, 1, 1, 1),
(4, 0, 1, 1);
EXPLAIN
SELECT a
FROM t1
WHERE c = 1 AND b = 1 AND d = 1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref c,bd bd 10 const,const 2 Using where
CREATE TABLE t2 ( a INT )
SELECT a
FROM t1
WHERE c = 1 AND b = 1 AND d = 1;
SELECT * FROM t2;
a
2
3
DROP TABLE t1, t2;
CREATE TABLE t1( a INT, b INT, KEY(a), KEY(b) );
INSERT INTO t1 VALUES (1, 2), (1, 2), (1, 2), (1, 2);
SELECT * FROM t1 FORCE INDEX(a, b) WHERE a = 1 AND b = 2;
a b
1 2
1 2
1 2
1 2
DROP TABLE t1;
# Code coverage of fix.
CREATE TABLE t1 ( a INT NOT NULL AUTO_INCREMENT PRIMARY KEY, b INT);
INSERT INTO t1 (b) VALUES (1);
UPDATE t1 SET b = 2 WHERE a = 1;
SELECT * FROM t1;
a b
1 2
CREATE TABLE t2 ( a INT NOT NULL AUTO_INCREMENT PRIMARY KEY, b VARCHAR(1) );
INSERT INTO t2 (b) VALUES ('a');
UPDATE t2 SET b = 'b' WHERE a = 1;
SELECT * FROM t2;
a b
1 b
DROP TABLE t1, t2;
#---------------- 2-sweeps read Index merge test 2 -------------------------------
create table t1 (
pk int primary key,
key1 int,
key2 int,
filler char(200),
filler2 char(200),
index(key1),
index(key2)
);
insert into t1 select seq, seq, seq, 'filler-data', 'filler-data-2'
from seq_1000_to_1;
select * from t1 where (key1 >= 2 and key1 <= 10) or (pk >= 4 and pk <=8 );
pk key1 key2 filler filler2
2 2 2 filler-data filler-data-2
3 3 3 filler-data filler-data-2
9 9 9 filler-data filler-data-2
10 10 10 filler-data filler-data-2
4 4 4 filler-data filler-data-2
5 5 5 filler-data filler-data-2
6 6 6 filler-data filler-data-2
7 7 7 filler-data filler-data-2
8 8 8 filler-data filler-data-2
set @maxv=1000;
select * from t1 where
(pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
or key1=18 or key1=60;
pk key1 key2 filler filler2
18 18 18 filler-data filler-data-2
60 60 60 filler-data filler-data-2
1 1 1 filler-data filler-data-2
2 2 2 filler-data filler-data-2
3 3 3 filler-data filler-data-2
4 4 4 filler-data filler-data-2
11 11 11 filler-data filler-data-2
12 12 12 filler-data filler-data-2
13 13 13 filler-data filler-data-2
14 14 14 filler-data filler-data-2
50 50 50 filler-data filler-data-2
51 51 51 filler-data filler-data-2
52 52 52 filler-data filler-data-2
53 53 53 filler-data filler-data-2
54 54 54 filler-data filler-data-2
991 991 991 filler-data filler-data-2
992 992 992 filler-data filler-data-2
993 993 993 filler-data filler-data-2
994 994 994 filler-data filler-data-2
995 995 995 filler-data filler-data-2
996 996 996 filler-data filler-data-2
997 997 997 filler-data filler-data-2
998 998 998 filler-data filler-data-2
999 999 999 filler-data filler-data-2
1000 1000 1000 filler-data filler-data-2
select * from t1 where
(pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
or key1 < 3 or key1 > @maxv-11;
pk key1 key2 filler filler2
990 990 990 filler-data filler-data-2
1 1 1 filler-data filler-data-2
2 2 2 filler-data filler-data-2
3 3 3 filler-data filler-data-2
4 4 4 filler-data filler-data-2
11 11 11 filler-data filler-data-2
12 12 12 filler-data filler-data-2
13 13 13 filler-data filler-data-2
14 14 14 filler-data filler-data-2
50 50 50 filler-data filler-data-2
51 51 51 filler-data filler-data-2
52 52 52 filler-data filler-data-2
53 53 53 filler-data filler-data-2
54 54 54 filler-data filler-data-2
991 991 991 filler-data filler-data-2
992 992 992 filler-data filler-data-2
993 993 993 filler-data filler-data-2
994 994 994 filler-data filler-data-2
995 995 995 filler-data filler-data-2
996 996 996 filler-data filler-data-2
997 997 997 filler-data filler-data-2
998 998 998 filler-data filler-data-2
999 999 999 filler-data filler-data-2
1000 1000 1000 filler-data filler-data-2
select * from t1 where
(pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
or
(key1 < 5) or (key1 > 10 and key1 < 15) or (key1 >= 50 and key1 < 55 ) or (key1 > @maxv-10);
pk key1 key2 filler filler2
1 1 1 filler-data filler-data-2
2 2 2 filler-data filler-data-2
3 3 3 filler-data filler-data-2
4 4 4 filler-data filler-data-2
11 11 11 filler-data filler-data-2
12 12 12 filler-data filler-data-2
13 13 13 filler-data filler-data-2
14 14 14 filler-data filler-data-2
50 50 50 filler-data filler-data-2
51 51 51 filler-data filler-data-2
52 52 52 filler-data filler-data-2
53 53 53 filler-data filler-data-2
54 54 54 filler-data filler-data-2
991 991 991 filler-data filler-data-2
992 992 992 filler-data filler-data-2
993 993 993 filler-data filler-data-2
994 994 994 filler-data filler-data-2
995 995 995 filler-data filler-data-2
996 996 996 filler-data filler-data-2
997 997 997 filler-data filler-data-2
998 998 998 filler-data filler-data-2
999 999 999 filler-data filler-data-2
1000 1000 1000 filler-data filler-data-2
select * from t1 where
(pk > 10 and pk < 15) or (pk >= 50 and pk < 55 )
or
(key1 < 5) or (key1 > @maxv-10);
pk key1 key2 filler filler2
1 1 1 filler-data filler-data-2
2 2 2 filler-data filler-data-2
3 3 3 filler-data filler-data-2
4 4 4 filler-data filler-data-2
991 991 991 filler-data filler-data-2
992 992 992 filler-data filler-data-2
993 993 993 filler-data filler-data-2
994 994 994 filler-data filler-data-2
995 995 995 filler-data filler-data-2
996 996 996 filler-data filler-data-2
997 997 997 filler-data filler-data-2
998 998 998 filler-data filler-data-2
999 999 999 filler-data filler-data-2
1000 1000 1000 filler-data filler-data-2
11 11 11 filler-data filler-data-2
12 12 12 filler-data filler-data-2
13 13 13 filler-data filler-data-2
14 14 14 filler-data filler-data-2
50 50 50 filler-data filler-data-2
51 51 51 filler-data filler-data-2
52 52 52 filler-data filler-data-2
53 53 53 filler-data filler-data-2
54 54 54 filler-data filler-data-2
drop table t1;
#---------------- Clustered PK ROR-index_merge tests -----------------------------
create table t1
(
pk1 int not null,
pk2 int not null,
key1 int not null,
key2 int not null,
pktail1ok int not null,
pktail2ok int not null,
pktail3bad int not null,
pktail4bad int not null,
pktail5bad int not null,
pk2copy int not null,
badkey int not null,
filler1 char (200),
filler2 char (200),
key (key1),
key (key2),
/* keys with tails from CPK members */
key (pktail1ok, pk1),
key (pktail2ok, pk1, pk2),
key (pktail3bad, pk2, pk1),
key (pktail4bad, pk1, pk2copy),
key (pktail5bad, pk1, pk2, pk2copy),
primary key (pk1, pk2)
);
explain select * from t1 where pk1 = 1 and pk2 < 80 and key1=0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY,key1 PRIMARY 8 NULL 10 Using where
select * from t1 where pk1 = 1 and pk2 < 80 and key1=0;
pk1 pk2 key1 key2 pktail1ok pktail2ok pktail3bad pktail4bad pktail5bad pk2copy badkey filler1 filler2
1 10 0 0 0 0 0 0 0 10 0 filler-data-10 filler2
1 11 0 0 0 0 0 0 0 11 0 filler-data-11 filler2
1 12 0 0 0 0 0 0 0 12 0 filler-data-12 filler2
1 13 0 0 0 0 0 0 0 13 0 filler-data-13 filler2
1 14 0 0 0 0 0 0 0 14 0 filler-data-14 filler2
1 15 0 0 0 0 0 0 0 15 0 filler-data-15 filler2
1 16 0 0 0 0 0 0 0 16 0 filler-data-16 filler2
1 17 0 0 0 0 0 0 0 17 0 filler-data-17 filler2
1 18 0 0 0 0 0 0 0 18 0 filler-data-18 filler2
1 19 0 0 0 0 0 0 0 19 0 filler-data-19 filler2
explain select pk1,pk2 from t1 where key1 = 10 and key2=10 and 2*pk1+1 < 2*96+1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge key1,key2 key1,key2 4,4 NULL 1 Using intersect(key1,key2); Using where; Using index
select pk1,pk2 from t1 where key1 = 10 and key2=10 and 2*pk1+1 < 2*96+1;
pk1 pk2
95 50
95 51
95 52
95 53
95 54
95 55
95 56
95 57
95 58
95 59
explain select * from t1 where badkey=1 and key1=10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref key1 key1 4 const 100 Using where
set @tmp_index_merge_ror_cpk=@@optimizer_switch;
set optimizer_switch='extended_keys=off';
explain select * from t1 where pk1 < 7500 and key1 = 10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref PRIMARY,key1 key1 4 const ROWS Using index condition
set optimizer_switch=@tmp_index_merge_ror_cpk;
explain select * from t1 where pktail1ok=1 and key1=10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge key1,pktail1ok key1,pktail1ok 4,4 NULL 1 Using intersect(key1,pktail1ok); Using where
explain select * from t1 where pktail2ok=1 and key1=10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge key1,pktail2ok key1,pktail2ok 4,4 NULL 1 Using intersect(key1,pktail2ok); Using where
explain select * from t1 where (pktail2ok=1 and pk1< 50000) or key1=10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge PRIMARY,key1,pktail2ok pktail2ok,key1 8,4 NULL 200 Using sort_union(pktail2ok,key1); Using where
explain select * from t1 where pktail3bad=1 and key1=10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref key1,pktail3bad key1 4 const 100 Using where
explain select * from t1 where pktail4bad=1 and key1=10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref key1,pktail4bad key1 4 const 100 Using where
explain select * from t1 where pktail5bad=1 and key1=10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref key1,pktail5bad key1 4 const 100 Using where
explain select pk1,pk2,key1,key2 from t1 where key1 = 10 and key2=10 limit 10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge key1,key2 key1,key2 4,4 NULL 1 Using intersect(key1,key2); Using where; Using index
select pk1,pk2,key1,key2 from t1 where key1 = 10 and key2=10 limit 10;
pk1 pk2 key1 key2
95 50 10 10
95 51 10 10
95 52 10 10
95 53 10 10
95 54 10 10
95 55 10 10
95 56 10 10
95 57 10 10
95 58 10 10
95 59 10 10
drop table t1;
create table t1
(
RUNID varchar(22),
SUBMITNR varchar(5),
ORDERNR char(1),
PROGRAMM varchar(8),
TESTID varchar(4),
UCCHECK char(1),
ETEXT varchar(80),
ETEXT_TYPE char(1),
INFO char(1),
SEVERITY tinyint(3),
TADIRFLAG char(1),
PRIMARY KEY (RUNID,SUBMITNR,ORDERNR,PROGRAMM,TESTID,UCCHECK),
KEY `TVERM~KEY` (PROGRAMM,TESTID,UCCHECK)
) DEFAULT CHARSET=latin1;
update t1 set `ETEXT` = '', `ETEXT_TYPE`='', `INFO`='', `SEVERITY`='', `TADIRFLAG`=''
WHERE
`RUNID`= '' AND `SUBMITNR`= '' AND `ORDERNR`='' AND `PROGRAMM`='' AND
`TESTID`='' AND `UCCHECK`='';
drop table t1;
#
# Bug#50402 Optimizer producing wrong results when using Index Merge on InnoDB
#
CREATE TABLE t1 (f1 INT, PRIMARY KEY (f1));
INSERT INTO t1 VALUES (2);
CREATE TABLE t2 (f1 INT, f2 INT, f3 char(1),
PRIMARY KEY (f1), KEY (f2), KEY (f3) );
INSERT INTO t2 VALUES (1, 1, 'h'), (2, 3, 'h'), (3, 2, ''), (4, 2, '');
SELECT t1.f1 FROM t1
WHERE (SELECT COUNT(*) FROM t2 WHERE t2.f3 = 'h' AND t2.f2 = t1.f1) = 0 AND t1.f1 = 2;
f1
2
EXPLAIN SELECT t1.f1 FROM t1
WHERE (SELECT COUNT(*) FROM t2 WHERE t2.f3 = 'h' AND t2.f2 = t1.f1) = 0 AND t1.f1 = 2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1
2 SUBQUERY t2 index_merge f2,f3 f3,f2 2,5 NULL 1 Using intersect(f3,f2); Using where; Using index
DROP TABLE t1,t2;
#
# BUG#56862/640419: Wrong result with sort_union index merge when one
# of the merged index scans is the primary key scan
#
CREATE TABLE t0(a int, b int) ENGINE=MyISAM;
CREATE TABLE t1 (
pk int NOT NULL AUTO_INCREMENT PRIMARY KEY,
a int,
b int,
INDEX idx(a))
ENGINE=INNODB;
INSERT INTO t0(a,b) VALUES
(11, 1100), (2, 200), (1, 100), (14, 1400), (5, 500),
(3, 300), (17, 1700), (4, 400), (12, 1200), (8, 800),
(6, 600), (18, 1800), (9, 900), (10, 1000), (7, 700),
(13, 1300), (15, 1500), (19, 1900), (16, 1600), (20, 2000);
INSERT INTO t0(a,b) SELECT a+20, b+2000 FROM t0;
INSERT INTO t0(a,b) SELECT a+40, b+4000 FROM t0;
INSERT INTO t0(a,b) SELECT a+80, b+8000 FROM t0;
begin;
INSERT INTO t1(a,b) SELECT t0.a,t0.b FROM t0, seq_1_to_1024;
INSERT INTO t1 VALUES (1000000, 0, 0);
commit;
DROP TABLE t0;
SET SESSION sort_buffer_size = 1024*36;
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN
SELECT COUNT(*) FROM
(SELECT * FROM t1 FORCE INDEX(primary,idx)
WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL #
2 DERIVED t1 index_merge PRIMARY,idx idx,PRIMARY 5,4 NULL # Using sort_union(idx,PRIMARY); Using where
SELECT COUNT(*) FROM
(SELECT * FROM t1 FORCE INDEX(primary,idx)
WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
COUNT(*)
6145
EXPLAIN
SELECT COUNT(*) FROM
(SELECT * FROM t1 IGNORE INDEX(idx)
WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL #
2 DERIVED t1 ALL PRIMARY NULL NULL NULL # Using where
SELECT COUNT(*) FROM
(SELECT * FROM t1 IGNORE INDEX(idx)
WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
COUNT(*)
6145
DROP TABLE t1;
set optimizer_switch=@tmp_optimizer_switch;
#
# Testcase Backport: BUG#48093: 6.0 Server not processing equivalent IN clauses properly
# with Innodb tables
#
CREATE TABLE t1 (
i int(11) DEFAULT NULL,
v1 varchar(1) DEFAULT NULL,
v2 varchar(20) DEFAULT NULL,
KEY i (i),
KEY v (v1,i)
) ENGINE=innodb;
INSERT INTO t1 VALUES (1,'f','no');
INSERT INTO t1 VALUES (2,'u','yes-u');
INSERT INTO t1 VALUES (2,'h','yes-h');
INSERT INTO t1 VALUES (3,'d','no');
SELECT v2
FROM t1
WHERE v1 IN ('f', 'd', 'h', 'u' ) AND i = 2;
v2
yes-u
yes-h
# Should not use index_merge
EXPLAIN
SELECT v2
FROM t1
WHERE v1 IN ('f', 'd', 'h', 'u' ) AND i = 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref i,v i 5 const 2 Using where
DROP TABLE t1;
#
# BUG#1006164: Multi-table DELETE that uses innodb + index_merge/intersect may fail to delete rows
#
create table t1 (
pk int auto_increment,
zone_id int,
modified tinyint,
primary key(pk),
key (zone_id),
key (modified)
) engine=innodb;
insert into t1 (zone_id, modified) select 0,0 from seq_1_to_10000;
update t1 set zone_id=487, modified=9 where pk=7259;
update t1 set zone_id=487, modified=9 where pk=7260;
update t1 set zone_id=830, modified=9 where pk=8434;
update t1 set zone_id=830, modified=9 where pk=8435;
update t1 set zone_id=830, modified=9 where pk=8436;
update t1 set zone_id=830, modified=9 where pk=8437;
select * from t1 where t1.zone_id=830 AND modified=9;
pk zone_id modified
8434 830 9
8435 830 9
8436 830 9
8437 830 9
begin;
DELETE t1 FROM t1 WHERE t1.zone_id=830 AND modified=9;
commit;
select * from t1 where t1.zone_id=830 AND modified=9;
pk zone_id modified
drop table t1;
#
# MDEV-376: Wrong result (missing rows) with index_merge+index_merge_intersection, join
#
CREATE TABLE t1 (
a INT, b CHAR(1), c CHAR(1), KEY(a), KEY(b)
) ENGINE=InnoDB;
INSERT INTO t1 VALUES (8,'v','v'),(8,'m','m'),(9,'d','d');
SELECT ta.* FROM t1 AS ta, t1 AS tb
WHERE ( tb.b != ta.b OR tb.a = ta.a )
AND ( tb.b = ta.c OR tb.b = ta.b );
a b c
8 v v
8 m m
9 d d
DROP TABLE t1;
set optimizer_switch= @optimizer_switch_save;
#
# MDEV-10927: Crash When Using sort_union Optimization
#
set @tmp_optimizer_switch=@@optimizer_switch;
SET optimizer_switch='index_merge_sort_intersection=on';
SET SESSION sort_buffer_size = 1024;
create table t1 (
pk int(11) NOT NULL AUTO_INCREMENT,
col1 int(11) NOT NULL,
col2 int(11) NOT NULL,
col3 int(11) NOT NULL,
key2 int(11) NOT NULL,
col4 int(11) NOT NULL,
key1 int(11) NOT NULL,
PRIMARY KEY (pk),
KEY key1 (key1),
KEY key2 (key2)
) ENGINE=InnoDB AUTO_INCREMENT=12860259 DEFAULT CHARSET=utf8 ROW_FORMAT=COMPACT;
insert into t1 (key1, key2, col1,col2,col3,col4)
select seq,seq,seq,seq,seq,seq from seq_1_to_10000;
SELECT sum(col1) FROM t1 FORCE INDEX (key1,key2) WHERE (key1 between 10 and 8191+10) or (key2= 5);
sum(col1)
33632261
drop table t1;
set optimizer_switch=@tmp_optimizer_switch;
#
# MDEV-22728: SIGFPE in Unique::get_cost_calc_buff_size from prepare_search_best_index_intersect
# on optimized builds
#
SET @save_sort_buffer_size=@@sort_buffer_size;
SET sort_buffer_size=2048;
CREATE TABLE t1 (
a VARCHAR(1024) CHARACTER SET UTF8 PRIMARY KEY,
b INT,
c INT,
INDEX (b)
) ENGINE=InnoDB CHARSET utf8 ROW_FORMAT= DYNAMIC;
INSERT INTO t1 SELECT seq, seq, seq from seq_1_to_100;
EXPLAIN SELECT * FROM t1 WHERE a='1' OR b < 5;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY,b NULL NULL NULL 100 Using where
SELECT * FROM t1 WHERE a='1' OR b < 5;
a b c
1 1 1
2 2 2
3 3 3
4 4 4
DROP TABLE t1;
SET sort_buffer_size= @save_sort_buffer_size;
disconnect disable_purge;
SET GLOBAL innodb_stats_persistent=@save_stats_persistent;
|