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
|
--source include/have_innodb.inc
--disable_warnings
DROP TABLE IF EXISTS t1,t2,t3,t4;
DROP DATABASE IF EXISTS dbt3_s001;
--enable_warnings
SET SESSION STORAGE_ENGINE='InnoDB';
CREATE DATABASE dbt3_s001;
use dbt3_s001;
--disable_query_log
--disable_result_log
--disable_warnings
--source include/dbt3_s001.inc
--enable_warnings
--enable_result_log
--enable_query_log
set @save_ext_key_optimizer_switch=@@optimizer_switch;
set optimizer_switch='extended_keys=off';
explain
select count(*) from lineitem where l_orderkey=130 and l_shipdate='1992-07-01';
flush status;
select count(*) from lineitem where l_orderkey=130 and l_shipdate='1992-07-01';
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select count(*) from lineitem where l_orderkey=130 and l_shipdate='1992-07-01';
flush status;
select count(*) from lineitem where l_orderkey=130 and l_shipdate='1992-07-01';
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select count(*) from lineitem
where l_orderkey=130 and l_linenumber=2 and l_shipdate='1992-07-01';
flush status;
select count(*) from lineitem
where l_orderkey=130 and l_linenumber=2 and l_shipdate='1992-07-01';
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select count(*) from lineitem
where l_orderkey=130 and l_linenumber=2 and l_shipdate='1992-07-01';
flush status;
select count(*) from lineitem
where l_orderkey=130 and l_linenumber=2 and l_shipdate='1992-07-01';
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select count(*) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000;
flush status;
select count(*) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select count(*) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000;
flush status;
select count(*) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
flush status;
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
flush status;
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select min(l_orderkey) from lineitem where l_shipdate='1992-07-01';
flush status;
select min(l_orderkey) from lineitem where l_shipdate='1992-07-01';
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select min(l_orderkey) from lineitem where l_shipdate='1992-07-01';
flush status;
select min(l_orderkey) from lineitem where l_shipdate='1992-07-01';
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select min(l_orderkey) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
flush status;
select min(l_orderkey) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select min(l_orderkey) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
flush status;
select min(l_orderkey) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select max(l_linenumber) from lineitem
where l_shipdate='1992-07-01' and l_orderkey=130;
flush status;
select max(l_linenumber) from lineitem
where l_shipdate='1992-07-01' and l_orderkey=130;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select max(l_linenumber) from lineitem
where l_shipdate='1992-07-01' and l_orderkey=130;
flush status;
select max(l_linenumber) from lineitem
where l_shipdate='1992-07-01' and l_orderkey=130;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey=130
or l_receiptdate='1992-07-01' and l_orderkey=5603;
flush status;
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey=130
or l_receiptdate='1992-07-01' and l_orderkey=5603;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey=130
or l_receiptdate='1992-07-01' and l_orderkey=5603;
flush status;
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey=130
or l_receiptdate='1992-07-01' and l_orderkey=5603;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
flush status;
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
flush status;
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
flush status;
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
flush status;
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
--replace_column 9 #
explain
select max(l_orderkey) from lineitem
where l_partkey between 1 and 10 group by l_partkey;
flush status;
select max(l_orderkey) from lineitem
where l_partkey between 1 and 10 group by l_partkey;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
--replace_column 9 #
explain
select max(l_orderkey) from lineitem
where l_partkey between 1 and 10 group by l_partkey;
flush status;
select max(l_orderkey) from lineitem
where l_partkey between 1 and 10 group by l_partkey;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
--replace_column 9 #
explain
select max(l_orderkey) from lineitem
where l_suppkey in (1,4) group by l_suppkey;
flush status;
select max(l_orderkey) from lineitem
where l_suppkey in (1,4) group by l_suppkey;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
--replace_column 9 #
explain
select max(l_orderkey) from lineitem
where l_suppkey in (1,4) group by l_suppkey;
flush status;
select max(l_orderkey) from lineitem
where l_suppkey in (1,4) group by l_suppkey;
show status like 'handler_read%';
create index i_p_retailprice on part(p_retailprice);
set optimizer_switch='extended_keys=off';
--replace_column 9 #
explain
select o_orderkey, p_partkey
from part use index (i_p_retailprice),
lineitem use index (i_l_partkey), orders
where p_retailprice > 1100 and o_orderdate='1997-01-01'
and o_orderkey=l_orderkey and p_partkey=l_partkey;
flush status;
select o_orderkey, p_partkey
from part use index (i_p_retailprice),
lineitem use index (i_l_partkey), orders
where p_retailprice > 1100 and o_orderdate='1997-01-01'
and o_orderkey=l_orderkey and p_partkey=l_partkey;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
--replace_column 9 #
explain
select o_orderkey, p_partkey
from part use index (i_p_retailprice),
lineitem use index (i_l_partkey), orders
where p_retailprice > 1100 and o_orderdate='1997-01-01'
and o_orderkey=l_orderkey and p_partkey=l_partkey;
flush status;
select o_orderkey, p_partkey
from part use index (i_p_retailprice),
lineitem use index (i_l_partkey), orders
where p_retailprice > 1100 and o_orderdate='1997-01-01'
and o_orderkey=l_orderkey and p_partkey=l_partkey;
show status like 'handler_read%';
--echo #
--echo # Bug mdev-3851: ref access used instead of expected eq_ref access
--echo # when extended_keys=on
--echo #
create table t0 (a int);
insert into t0 values (1), (2), (3), (4), (5);
create index i_p_size on part(p_size);
set optimizer_switch='extended_keys=on';
explain
select * from t0, part ignore index (primary)
where p_partkey=t0.a and p_size=1;
select * from t0, part ignore index (primary)
where p_partkey=t0.a and p_size=1;
drop table t0;
drop index i_p_size on part;
DROP DATABASE dbt3_s001;
use test;
--echo #
--echo # LP Bug #914560: query containing IN subquery
--echo # + extended_keys = on
--echo #
set @save_optimizer_switch=@@optimizer_switch;
SET optimizer_switch='materialization=on,semijoin=on';
SET optimizer_switch='extended_keys=on';
CREATE TABLE t1 (a int, b int) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,1), (2,2);
SELECT * FROM t1 WHERE 2 IN (SELECT MAX(s1.a) FROM t1 AS s1, t1 AS s2);
EXPLAIN
SELECT * FROM t1 WHERE 2 IN (SELECT MAX(s1.a) FROM t1 AS s1, t1 AS s2);
DROP TABLE t1;
set optimizer_switch=@save_optimizer_switch;
--echo #
--echo # LP Bug #915291: query using a materialized view
--echo # + extended_keys = on
--echo # (valgrinf complains fixed by the patch for bug #914560)
--echo #
set @save_optimizer_switch=@@optimizer_switch;
SET optimizer_switch = 'derived_with_keys=on';
SET optimizer_switch = 'extended_keys=on';
CREATE TABLE t1 (a varchar(1)) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('j'), ('v');
CREATE TABLE t2 (b varchar(1)) ENGINE=MyISAM;
INSERT INTO t2 VALUES ('j'), ('v');
CREATE TABLE t3 (c varchar(1));
INSERT INTO t2 VALUES ('m'), ('n');
CREATE VIEW v
AS SELECT DISTINCT * FROM t2 STRAIGHT_JOIN t3;
SELECT * FROM t1, v WHERE a = b;
DROP VIEW v;
DROP TABLE t1,t2,t3;
set optimizer_switch=@save_optimizer_switch;
--echo #
--echo # LP Bug #921167: query containing IN subquery
--echo # + extended_keys = on
--echo #
CREATE TABLE t1 (
a int NOT NULL, b varchar(1) NOT NULL, KEY(a), KEY(b,a)
) ENGINE=MyISAM;
INSERT INTO t1 VALUES
(0,'j'), (8,'v'), (1,'c'), (8,'m'), (9,'d'),
(24,'d'), (6,'y'), (1,'t'), (6,'d'), (2,'s');
CREATE TABLE t2 (
c int NOT NULL PRIMARY KEY
) ENGINE=MyISAM;
INSERT INTO t2 VALUES
(10), (11), (12), (13), (14),
(15), (16), (17), (18), (19), (24);
set @save_optimizer_switch=@@optimizer_switch;
SET optimizer_switch = 'extended_keys=off';
EXPLAIN
SELECT a FROM t1 AS t, t2
WHERE c = a AND b IN (SELECT b FROM t1, t2 WHERE b = t.b);
SELECT a FROM t1 AS t, t2
WHERE c = a AND b IN (SELECT b FROM t1, t2 WHERE b = t.b);
SET optimizer_switch = 'extended_keys=on';
EXPLAIN
SELECT a FROM t1 AS t, t2
WHERE c = a AND b IN (SELECT b FROM t1, t2 WHERE b = t.b);
SELECT a FROM t1 AS t, t2
WHERE c = a AND b IN (SELECT b FROM t1, t2 WHERE b = t.b);
set optimizer_switch=@save_optimizer_switch;
DROP TABLE t1,t2;
--echo #
--echo # LP Bug #923236: hash join + extended_keys = on
--echo #
CREATE TABLE t1 (a int) ENGINE=MyISAM;
CREATE TABLE t2 (b int) ENGINE=MyISAM;
INSERT INTO t1 (a) VALUES (4), (6);
INSERT INTO t2 (b) VALUES (0), (8);
set @save_optimizer_switch=@@optimizer_switch;
set @save_join_cache_level=@@join_cache_level;
SET join_cache_level=3;
SET optimizer_switch='join_cache_hashed=on';
SET optimizer_switch='join_cache_bka=on';
SET optimizer_switch='extended_keys=on';
EXPLAIN
SELECT * FROM t1, t2 WHERE b=a;
SELECT * FROM t1, t2 WHERE b=a;
set join_cache_level=@save_join_cache_level;
set optimizer_switch=@save_optimizer_switch;
DROP TABLE t1,t2;
--echo #
--echo # Bug mdev-3888: INSERT with UPDATE on duplicate keys
--echo # with extended_keys=on
--echo #
CREATE TABLE t1 (
c1 bigint(20) unsigned NOT NULL AUTO_INCREMENT,
c2 bigint(20) unsigned NOT NULL,
c3 bigint(20) unsigned NOT NULL,
c4 varchar(128) DEFAULT NULL,
PRIMARY KEY (c1),
UNIQUE KEY uq (c2,c3),
KEY c3 (c3),
KEY c4 (c4)
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=utf8;
set @save_optimizer_switch=@@optimizer_switch;
set session optimizer_switch='extended_keys=off';
INSERT INTO t1 (c2, c3, c4) VALUES (58291525, 2580, 'foobar')
ON DUPLICATE KEY UPDATE c4 = VALUES(c4);
INSERT INTO t1 (c2, c3, c4) VALUES (58291525, 2580, 'foobar')
ON DUPLICATE KEY UPDATE c4 = VALUES(c4);
DELETE FROM t1;
set session optimizer_switch='extended_keys=on';
INSERT INTO t1 (c2, c3, c4) VALUES (58291525, 2580, 'foobar')
ON DUPLICATE KEY UPDATE c4 = VALUES(c4);
INSERT INTO t1 (c2, c3, c4) VALUES (58291525, 2580, 'foobar')
ON DUPLICATE KEY UPDATE c4 = VALUES(c4);
set optimizer_switch=@save_optimizer_switch;
DROP TABLE t1;
--echo #
--echo # Bug mdev-4220: using ref instead of eq_ref
--echo # with extended_keys=on
--echo # (performance regression introduced in the patch for mdev-3851)
--echo #
set @save_optimizer_switch=@@optimizer_switch;
create table t1 (a int not null) engine=innodb;
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2 (
pk int primary key, a int not null, b int, unique(a)
)engine=innodb;
insert into t2
select
A.a + 10 * B.a, A.a + 10 * B.a, A.a + 10 * B.a
from t1 A, t1 B;
set optimizer_switch='extended_keys=off';
explain
select * from t1, t2 where t2.a=t1.a and t2.b < 2;
flush status;
select * from t1, t2 where t2.a=t1.a and t2.b < 2;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select * from t1, t2 where t2.a=t1.a and t2.b < 2;
flush status;
select * from t1, t2 where t2.a=t1.a and t2.b < 2;
show status like 'handler_read%';
drop table t1,t2;
# this test case did not demonstrate any regression
# it is added for better testing
create table t1(a int) engine=myisam;
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2(a int) engine=myisam;
insert into t2 select A.a + 10*B.a + 100*C.a from t1 A, t1 B, t1 C;
create table t3 (
pk1 int not null, pk2 int not null, col1 int not null, col2 int not null)
engine=innodb;
insert into t3 select a,a,a,a from t2;
alter table t3 add primary key (pk1, pk2);
alter table t3 add key (col1, col2);
analyze table t1,t3;
set optimizer_switch='extended_keys=off';
--replace_column 9 #
explain
select * from t1, t3 where t3.col1=t1.a and t3.col2=t1.a;
--replace_column 9 #
explain
select * from t1, t3 where t3.col1=t1.a and t3.col2=t1.a and t3.pk1=t1.a;
set optimizer_switch='extended_keys=on';
--replace_column 9 #
explain
select * from t1, t3 where t3.col1=t1.a and t3.col2=t1.a;
--replace_column 9 #
explain
select * from t1, t3 where t3.col1=t1.a and t3.col2=t1.a and t3.pk1=t1.a;
drop table t1,t2,t3;
--echo #
--echo # Bug mdev-4340: performance regression with extended_keys=on
--echo #
set @save_optimizer_switch=@@optimizer_switch;
CREATE TABLE t1 (
page_id int(8) unsigned NOT NULL AUTO_INCREMENT,
page_namespace int(11) NOT NULL DEFAULT '0',
page_title varbinary(255) NOT NULL DEFAULT '',
page_restrictions tinyblob NOT NULL,
page_counter bigint(20) unsigned NOT NULL DEFAULT '0',
page_is_redirect tinyint(1) unsigned NOT NULL DEFAULT '0',
page_is_new tinyint(1) unsigned NOT NULL DEFAULT '0',
page_random double unsigned NOT NULL DEFAULT '0',
page_touched varbinary(14) NOT NULL DEFAULT '',
page_latest int(8) unsigned NOT NULL DEFAULT '0',
page_len int(8) unsigned NOT NULL DEFAULT '0',
PRIMARY KEY (page_id),
UNIQUE KEY name_title (page_namespace,page_title),
KEY page_random (page_random),
KEY page_len (page_len),
KEY page_redirect_namespace_len (page_is_redirect,page_namespace,page_len)
) ENGINE=InnoDB AUTO_INCREMENT=38929100 DEFAULT CHARSET=binary;
INSERT INTO t1 VALUES
(38928077,0,'Sandbox','',0,0,0,0,'',0,0),(38928078,1,'Sandbox','',0,0,0,1,'',0,0),
(38928079,2,'Sandbox','',0,0,0,2,'',0,0),(38928080,3,'Sandbox','',0,0,0,3,'',0,0),
(38928081,4,'Sandbox','',0,0,0,4,'',0,0),(38928082,5,'Sandbox','',0,0,0,5,'',0,0);
CREATE TABLE t2 (
rev_id int(8) unsigned NOT NULL AUTO_INCREMENT,
rev_page int(8) unsigned NOT NULL DEFAULT '0',
rev_text_id int(8) unsigned NOT NULL DEFAULT '0',
rev_comment varbinary(255) DEFAULT NULL,
rev_user int(5) unsigned NOT NULL DEFAULT '0',
rev_user_text varbinary(255) NOT NULL DEFAULT '',
rev_timestamp varbinary(14) NOT NULL DEFAULT '',
rev_minor_edit tinyint(1) unsigned NOT NULL DEFAULT '0',
rev_deleted tinyint(1) unsigned NOT NULL DEFAULT '0',
rev_len int(8) unsigned DEFAULT NULL,
rev_parent_id int(8) unsigned DEFAULT NULL,
rev_sha1 varbinary(32) NOT NULL DEFAULT '',
PRIMARY KEY (rev_page,rev_id),
UNIQUE KEY rev_id (rev_id),
KEY rev_timestamp (rev_timestamp),
KEY page_timestamp (rev_page,rev_timestamp),
KEY user_timestamp (rev_user,rev_timestamp),
KEY usertext_timestamp (rev_user_text,rev_timestamp,rev_user,rev_deleted,rev_minor_edit,rev_text_id,rev_comment)
) ENGINE=InnoDB DEFAULT CHARSET=binary;
INSERT INTO t2 VALUES
(547116222,20,0,NULL,3,'','',0,0,NULL,NULL,''),(547117245,20,0,NULL,4,'','',0,0,NULL,NULL,''),
(547118268,20,0,NULL,5,'','',0,0,NULL,NULL,''),(547114177,21,0,NULL,1,'','',0,0,NULL,NULL,''),
(547115200,21,0,NULL,2,'','',0,0,NULL,NULL,''),(547116223,21,0,NULL,3,'','',0,0,NULL,NULL,''),
(547117246,21,0,NULL,4,'','',0,0,NULL,NULL,''),(547118269,21,0,NULL,5,'','',0,0,NULL,NULL,''),
(547114178,22,0,NULL,1,'','',0,0,NULL,NULL,''),(547115201,22,0,NULL,2,'','',0,0,NULL,NULL,''),
(547116224,22,0,NULL,3,'','',0,0,NULL,NULL,''),(547117247,22,0,NULL,4,'','',0,0,NULL,NULL,''),
(547116226,24,0,NULL,3,'','',0,0,NULL,NULL,''),(547117249,24,0,NULL,4,'','',0,0,NULL,NULL,''),
(547118272,24,0,NULL,5,'','',0,0,NULL,NULL,''),(547114181,25,0,NULL,1,'','',0,0,NULL,NULL,''),
(547115204,25,0,NULL,2,'','',0,0,NULL,NULL,''),(547116227,25,0,NULL,3,'','',0,0,NULL,NULL,''),
(547116157,978,0,NULL,2,'','',0,0,NULL,NULL,''),(547117180,978,0,NULL,3,'','',0,0,NULL,NULL,''),
(547118203,978,0,NULL,4,'','',0,0,NULL,NULL,''),(547119226,978,0,NULL,5,'','',0,0,NULL,NULL,''),
(547115135,979,0,NULL,1,'','',0,0,NULL,NULL,''),(547116158,979,0,NULL,2,'','',0,0,NULL,NULL,''),
(547116173,994,0,NULL,2,'','',0,0,NULL,NULL,''),(547117196,994,0,NULL,3,'','',0,0,NULL,NULL,''),
(547118219,994,0,NULL,4,'','',0,0,NULL,NULL,''),(547119242,994,0,NULL,5,'','',0,0,NULL,NULL,''),
(547115151,995,0,NULL,1,'','',0,0,NULL,NULL,''),(547116174,995,0,NULL,2,'','',0,0,NULL,NULL,''),
(547117197,995,0,NULL,3,'','',0,0,NULL,NULL,''),(547118220,995,0,NULL,4,'','',0,0,NULL,NULL,''),
(547118223,998,0,NULL,4,'','',0,0,NULL,NULL,''),(547119246,998,0,NULL,5,'','',0,0,NULL,NULL,''),
(547115155,999,0,NULL,1,'','',0,0,NULL,NULL,''),(547116178,999,0,NULL,2,'','',0,0,NULL,NULL,''),
(547117201,999,0,NULL,3,'','',0,0,NULL,NULL,''),(547118224,999,0,NULL,4,'','',0,0,NULL,NULL,''),
(547119271,38928081,0,NULL,10,'','',0,0,NULL,NULL,''),(547119272,38928081,0,NULL,11,'','',0,0,NULL,NULL,''),
(547119273,38928081,0,NULL,12,'','',0,0,NULL,NULL,''),(547119274,38928081,0,NULL,13,'','',0,0,NULL,NULL,''),
(547119275,38928081,0,NULL,14,'','',0,0,NULL,NULL,''),(547119276,38928081,0,NULL,15,'','',0,0,NULL,NULL,''),
(547119277,38928081,0,NULL,16,'','',0,0,NULL,NULL,''),(547119278,38928081,0,NULL,17,'','',0,0,NULL,NULL,''),
(547119279,38928081,0,NULL,18,'','',0,0,NULL,NULL,''),(547119280,38928081,0,NULL,19,'','',0,0,NULL,NULL,'');
CREATE TABLE t3 (
old_id int(10) unsigned NOT NULL AUTO_INCREMENT,
old_text mediumblob NOT NULL,
old_flags tinyblob NOT NULL,
PRIMARY KEY (old_id)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO t3 VALUES
(1,'text-0',''),(2,'text-1000',''),(3,'text-2000',''),(4,'text-3000',''),
(5,'text-4000',''),(6,'text-5000',''),(7,'text-6000',''),(8,'text-7000',''),
(9,'text-8000',''),(10,'text-9000',''),(11,'text-1',''),(12,'text-1001',''),
(13,'text-2001',''),(14,'text-3001',''),(15,'text-4001',''),(16,'text-5001',''),
(17,'text-6001',''),(18,'text-7001',''),(19,'text-8001',''),(20,'text-9001',''),
(21,'text-2',''),(22,'text-1002',''),(23,'text-2002',''),(24,'text-3002',''),
(25,'text-4002',''),(26,'text-5002',''),(27,'text-6002',''),(28,'text-7002',''),
(29,'text-8002',''),(30,'text-9002',''),(31,'text-3',''),(32,'text-1003',''),
(33,'text-2003',''),(34,'text-3003',''),(35,'text-4003',''),(36,'text-5003',''),
(37,'text-6003',''),(38,'text-7003',''),(39,'text-8003',''),(40,'text-9003',''),
(41,'text-4',''),(42,'text-1004',''),(43,'text-2004',''),(44,'text-3004',''),
(45,'text-4004',''),(46,'text-5004',''),(47,'text-6004',''),(48,'text-7004',''),
(49,'text-8004',''),(50,'text-9004',''),(51,'text-5',''),(52,'text-1005',''),
(53,'text-2005',''),(54,'text-3005',''),(55,'text-4005',''),(56,'text-5005',''),
(57,'text-6005',''),(58,'text-7005',''),(59,'text-8005',''),(60,'text-9005',''),
(61,'text-6',''),(62,'text-1006',''),(63,'text-2006',''),(64,'text-3006',''),
(65,'text-4006',''),(66,'text-5006',''),(67,'text-6006',''),(68,'text-7006',''),
(69,'text-8006',''),(70,'text-9006',''),(71,'text-7',''),(72,'text-1007',''),
(73,'text-2007',''),(74,'text-3007',''),(75,'text-4007',''),(76,'text-5007',''),
(77,'text-6007',''),(78,'text-7007',''),(79,'text-8007',''),(80,'text-9007',''),
(81,'text-8',''),(82,'text-1008',''),(83,'text-2008',''),(84,'text-3008',''),
(85,'text-4008',''),(86,'text-5008',''),(87,'text-6008',''),(88,'text-7008',''),
(89,'text-8008',''),(90,'text-9008',''),(91,'text-9',''),(92,'text-1009',''),
(93,'text-2009',''),(94,'text-3009',''),(95,'text-4009',''),(96,'text-5009',''),
(97,'text-6009',''),(98,'text-7009',''),(99,'text-8009',''),(100,'text-9009','');
set optimizer_switch='extended_keys=off';
EXPLAIN
SELECT * FROM t1, t2 IGNORE INDEX (PRIMARY), t3
WHERE page_id=rev_page AND rev_text_id=old_id AND page_namespace=4 AND page_title='Sandbox'
ORDER BY rev_timestamp ASC LIMIT 10;
set optimizer_switch='extended_keys=on';
EXPLAIN
SELECT * FROM t1, t2 IGNORE INDEX (PRIMARY), t3
WHERE page_id=rev_page AND rev_text_id=old_id AND page_namespace=4 AND page_title='Sandbox'
ORDER BY rev_timestamp ASC LIMIT 10;
DROP TABLE t1,t2,t3;
--echo #
--echo # MDEV-5424 SELECT using ORDER BY DESC and LIMIT produces unexpected
--echo # results (InnoDB/XtraDB)
--echo #
create table t1 (a bigint not null unique auto_increment, b varchar(10), primary key (a), key (b(2))) engine = myisam default character set utf8;
create table t2 (a bigint not null unique auto_increment, b varchar(10), primary key (a), key (b(2))) engine = innodb default character set utf8;
insert into t1 (b) values (null), (null), (null);
insert into t2 (b) values (null), (null), (null);
set optimizer_switch='extended_keys=on';
explain select a from t1 where b is null order by a desc limit 2;
select a from t1 where b is null order by a desc limit 2;
explain select a from t2 where b is null order by a desc limit 2;
select a from t2 where b is null order by a desc limit 2;
set optimizer_switch='extended_keys=off';
explain select a from t2 where b is null order by a desc limit 2;
select a from t2 where b is null order by a desc limit 2;
explain select a from t2 where b is null order by a desc;
select a from t2 where b is null order by a desc;
explain select a from t2 where b is null order by a desc,a,a;
select a from t2 where b is null order by a desc,a,a;
drop table t1, t2;
set optimizer_switch=@save_optimizer_switch;
--echo #
--echo # MDEV-10325: Queries examines all rows of a tables when it should not
--echo #
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (
pk int not null,
col1 varchar(32),
filler varchar(100),
key idx1(col1(10)),
primary key (pk)
)engine=innodb;
insert into t1
select
A.a + 10*B.a + 100*C.a,
concat('1234567890-', 1000+ A.a + 10*B.a + 100*C.a),
repeat('filler-data-', 4)
from
t0 A, t0 B, t0 C;
let $q=explain select * from t1 where col1='1234567890-a';
let $rows=query_get_value($q, rows, 1);
if ($rows < 2)
{
--echo The EXPLAIN should not produce a query plan with type=ref, rows=1
--die Fix for MDEV-10325 didnt work;
}
drop table t0,t1;
--echo #
--echo #
--echo # MDEV-10360: Extended keys: index properties depend on index order
--echo #
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (
index_id bigint(20) unsigned NOT NULL,
index_class varchar(265) COLLATE latin1_general_ci DEFAULT NULL ,
index_object_id int(10) unsigned NOT NULL DEFAULT '0' ,
index_date_updated int(10) unsigned DEFAULT NULL ,
PRIMARY KEY (index_id),
KEY object (index_class(181),index_object_id),
KEY index_date_updated (index_date_updated)
) engine=innodb;
create table t2 (
index_id bigint(20) unsigned NOT NULL,
index_class varchar(265) COLLATE latin1_general_ci DEFAULT NULL ,
index_object_id int(10) unsigned NOT NULL DEFAULT '0' ,
index_date_updated int(10) unsigned DEFAULT NULL ,
PRIMARY KEY (index_id),
KEY index_date_updated (index_date_updated),
KEY object (index_class(181),index_object_id)
) engine=innodb;
insert into t1 select
@a:=A.a + 10*B.a + 100*C.a,
concat('val-', @a),
123456,
A.a + 10*B.a
from
t0 A, t0 B, t0 C;
insert into t2 select * from t1;
--echo # This must have the same query plan as the query below it:
--echo # type=range, key=index_date_updated, key_len=13
--replace_column 9 #
explain
select * from t1 force index(index_date_updated)
where index_date_updated= 10 and index_id < 800;
--echo # This used to work from the start:
--replace_column 9 #
explain
select * from t2 force index(index_date_updated)
where index_date_updated= 10 and index_id < 800;
drop table t0,t1,t2;
--echo #
--echo # MDEV-11196: Error:Run-Time Check Failure #2 - Stack around the variable 'key_buff'
--echo # was corrupted, server crashes in opt_sum_query
CREATE TABLE t1 (
pk INT,
f1 VARCHAR(3),
f2 VARCHAR(1024),
PRIMARY KEY (pk),
KEY(f2)
) ENGINE=InnoDB CHARSET utf8 ROW_FORMAT= DYNAMIC;
INSERT INTO t1 VALUES (1,'foo','abc'),(2,'bar','def');
SELECT MAX(t2.pk) FROM t1 t2 INNER JOIN t1 t3 ON t2.f1 = t3.f1 WHERE t2.pk <= 4;
drop table t1;
CREATE TABLE t1 (
pk1 INT,
pk2 INT,
f1 VARCHAR(3),
f2 VARCHAR(1021),
PRIMARY KEY (pk1,pk2),
KEY(f2)
) ENGINE=InnoDB CHARSET utf8 ROW_FORMAT= DYNAMIC;
INSERT INTO t1 VALUES (1,2,'2','abc'),(2,3,'3','def');
explain format= json
select * from t1 force index(f2) where pk1 <= 5 and pk2 <=5 and f2 = 'abc' and f1 <= '3';
drop table t1;
CREATE TABLE t1 (
f2 INT,
pk2 INT,
f1 VARCHAR(3),
pk1 VARCHAR(1000),
PRIMARY KEY (pk1,pk2),
KEY k1(pk1,f2)
) ENGINE=InnoDB CHARSET utf8 ROW_FORMAT= DYNAMIC;
INSERT INTO t1 VALUES (1,2,'2','abc'),(2,3,'3','def');
explain format= json
select * from t1 force index(k1) where f2 <= 5 and pk2 <=5 and pk1 = 'abc' and f1 <= '3';
drop table t1;
|