~drizzle-trunk/drizzle/development

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
drop table if exists t1,t2,t3;
drop database if exists mysqltest;
drop view if exists v1;
revoke all privileges on mysqltest.t1 from mysqltest_1@localhost;
revoke all privileges on mysqltest.* from mysqltest_1@localhost;
delete from mysql.user where user=_binary'mysqltest_1';
create table t1(id1 int not null auto_increment primary key, t char(12));
create table t2(id2 int not null, t char(12));
create table t3(id3 int not null, t char(12), index(id3));
select count(*) from t1 where id1 > 95;
count(*)
5
select count(*) from t2 where id2 > 95;
count(*)
25
select count(*) from t3 where id3 > 95;
count(*)
250
update t1,t2,t3 set t1.t="aaa", t2.t="bbb", t3.t="cc" where  t1.id1 = t2.id2 and t2.id2 = t3.id3  and t1.id1 > 90;
select count(*) from t1 where t = "aaa";
count(*)
10
select count(*) from t1 where id1 > 90;
count(*)
10
select count(*) from t2 where t = "bbb";
count(*)
50
select count(*) from t2 where id2 > 90;
count(*)
50
select count(*) from t3 where t = "cc";
count(*)
500
select count(*) from t3 where id3 > 90;
count(*)
500
delete t1.*, t2.*, t3.*  from t1,t2,t3 where t1.id1 = t2.id2 and t2.id2 = t3.id3  and t1.id1 > 95;
check table t1, t2, t3;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
test.t2	check	status	OK
test.t3	check	status	OK
select count(*) from t1 where id1 > 95;
count(*)
0
select count(*) from t2 where id2 > 95;
count(*)
0
select count(*) from t3 where id3 > 95;
count(*)
0
delete t1, t2, t3  from t1,t2,t3 where t1.id1 = t2.id2 and t2.id2 = t3.id3  and t1.id1 > 5;
select count(*) from t1 where id1 > 5;
count(*)
0
select count(*) from t2 where id2 > 5;
count(*)
0
select count(*) from t3 where id3 > 5;
count(*)
0
delete from t1, t2, t3  using t1,t2,t3 where t1.id1 = t2.id2 and t2.id2 = t3.id3  and t1.id1 > 0;
select count(*) from t1 where id1;
count(*)
0
select count(*) from t2 where id2;
count(*)
0
select count(*) from t3 where id3;
count(*)
0
drop table t1,t2,t3;
create table t1(id1 int not null  primary key, t varchar(100)) pack_keys = 1;
create table t2(id2 int not null, t varchar(100), index(id2)) pack_keys = 1;
delete t1  from t1,t2 where t1.id1 = t2.id2 and t1.id1 > 500;
drop table t1,t2;
CREATE TABLE t1 (
id int(11) NOT NULL default '0',
name varchar(10) default NULL,
PRIMARY KEY  (id)
) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,'aaa'),(2,'aaa'),(3,'aaa');
CREATE TABLE t2 (
id int(11) NOT NULL default '0',
name varchar(10) default NULL,
PRIMARY KEY  (id)
) ENGINE=MyISAM;
INSERT INTO t2 VALUES (2,'bbb'),(3,'bbb'),(4,'bbb');
CREATE TABLE t3 (
id int(11) NOT NULL default '0',
mydate datetime default NULL,
PRIMARY KEY  (id)
) ENGINE=MyISAM;
INSERT INTO t3 VALUES (1,'2002-02-04 00:00:00'),(3,'2002-05-12 00:00:00'),(5,'2002-05-12 00:00:00'),(6,'2002-06-22
00:00:00'),(7,'2002-07-22 00:00:00');
delete t1,t2,t3 from t1,t2,t3 where to_days(now())-to_days(t3.mydate)>=30 and t3.id=t1.id and t3.id=t2.id;
select * from t3;
id	mydate
1	2002-02-04 00:00:00
5	2002-05-12 00:00:00
6	2002-06-22 00:00:00
7	2002-07-22 00:00:00
DROP TABLE t1,t2,t3;
CREATE TABLE IF NOT EXISTS `t1` (
`id` int(11) NOT NULL auto_increment,
`tst` text,
`tst1` text,
PRIMARY KEY  (`id`)
) ENGINE=MyISAM;
CREATE TABLE IF NOT EXISTS `t2` (
`ID` int(11) NOT NULL auto_increment,
`ParId` int(11) default NULL,
`tst` text,
`tst1` text,
PRIMARY KEY  (`ID`),
KEY `IX_ParId_t2` (`ParId`),
FOREIGN KEY (`ParId`) REFERENCES `t1` (`id`)
) ENGINE=MyISAM;
INSERT INTO t1(tst,tst1) VALUES("MySQL","MySQL AB"), ("MSSQL","Microsoft"), ("ORACLE","ORACLE");
INSERT INTO t2(ParId) VALUES(1), (2), (3);
select * from t2;
ID	ParId	tst	tst1
1	1	NULL	NULL
2	2	NULL	NULL
3	3	NULL	NULL
UPDATE t2, t1 SET t2.tst = t1.tst, t2.tst1 = t1.tst1 WHERE t2.ParId = t1.Id;
select * from t2;
ID	ParId	tst	tst1
1	1	MySQL	MySQL AB
2	2	MSSQL	Microsoft
3	3	ORACLE	ORACLE
drop table t1, t2 ;
create table t1 (n numeric(10));
create table t2 (n numeric(10));
insert into t2 values (1),(2),(4),(8),(16),(32);
select * from t2 left outer join t1  using (n);
n
1
2
4
8
16
32
delete  t1,t2 from t2 left outer join t1  using (n);
select * from t2 left outer join t1  using (n);
n
drop table t1,t2 ;
create table t1 (n int(10) not null primary key, d int(10));
create table t2 (n int(10) not null primary key, d int(10));
insert into t1 values(1,1);
insert into t2 values(1,10),(2,20);
LOCK TABLES t1 write, t2 read;
DELETE t1.*, t2.* FROM t1,t2 where t1.n=t2.n;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
UPDATE t1,t2 SET t1.d=t2.d,t2.d=30 WHERE t1.n=t2.n;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
UPDATE t1,t2 SET t1.d=t2.d WHERE t1.n=t2.n;
unlock tables;
LOCK TABLES t1 write, t2 write;
UPDATE t1,t2 SET t1.d=t2.d WHERE t1.n=t2.n;
select * from t1;
n	d
1	10
DELETE t1.*, t2.* FROM t1,t2 where t1.n=t2.n;
select * from t1;
n	d
select * from t2;
n	d
2	20
unlock tables;
drop table t1,t2;
set sql_safe_updates=1;
create table t1 (n int(10), d int(10));
create table t2 (n int(10), d int(10));
insert into t1 values(1,1);
insert into t2 values(1,10),(2,20);
UPDATE t1,t2 SET t1.d=t2.d WHERE t1.n=t2.n;
ERROR HY000: You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column
set sql_safe_updates=0;
drop table t1,t2;
set timestamp=1038401397;
create table t1 (n int(10) not null primary key, d int(10), t timestamp);
create table t2 (n int(10) not null primary key, d int(10), t timestamp);
insert into t1 values(1,1,NULL);
insert into t2 values(1,10,NULL),(2,20,NULL);
set timestamp=1038000000;
UPDATE t1,t2 SET t1.d=t2.d WHERE t1.n=t2.n;
select n,d,unix_timestamp(t) from t1;
n	d	unix_timestamp(t)
1	10	1038000000
select n,d,unix_timestamp(t) from t2;
n	d	unix_timestamp(t)
1	10	1038401397
2	20	1038401397
UPDATE t1,t2 SET 1=2 WHERE t1.n=t2.n;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '1=2 WHERE t1.n=t2.n' at line 1
drop table t1,t2;
set timestamp=0;
set sql_safe_updates=0;
create table t1 (n int(10) not null primary key, d int(10));
create table t2 (n int(10) not null primary key, d int(10));
insert into t1 values(1,1), (3,3);
insert into t2 values(1,10),(2,20);
UPDATE t2 left outer join t1 on t1.n=t2.n  SET t1.d=t2.d;
select * from t1;
n	d
1	10
3	3
select * from t2;
n	d
1	10
2	20
drop table t1,t2;
create table t1 (n int(10), d int(10));
create table t2 (n int(10), d int(10));
insert into t1 values(1,1),(1,2);
insert into t2 values(1,10),(2,20);
UPDATE t1,t2 SET t1.d=t2.d,t2.d=30 WHERE t1.n=t2.n;
select * from t1;
n	d
1	10
1	10
select * from t2;
n	d
1	30
2	20
drop table t1,t2;
create table t1 (n int(10), d int(10));
create table t2 (n int(10), d int(10));
insert into t1 values(1,1),(3,2);
insert into t2 values(1,10),(1,20);
UPDATE t1,t2 SET t1.d=t2.d,t2.d=30 WHERE t1.n=t2.n;
select * from t1;
n	d
1	10
3	2
select * from t2;
n	d
1	30
1	30
UPDATE t1 a ,t2 b SET a.d=b.d,b.d=30 WHERE a.n=b.n;
select * from t1;
n	d
1	30
3	2
select * from t2;
n	d
1	30
1	30
DELETE a, b  FROM t1 a,t2 b where a.n=b.n;
select * from t1;
n	d
3	2
select * from t2;
n	d
drop table t1,t2;
CREATE TABLE t1 ( broj int(4) unsigned NOT NULL default '0',  naziv char(25) NOT NULL default 'NEPOZNAT',  PRIMARY KEY  (broj)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,'jedan'),(2,'dva'),(3,'tri'),(4,'xxxxxxxxxx'),(5,'a'),(10,''),(11,''),(12,''),(13,'');
CREATE TABLE t2 ( broj int(4) unsigned NOT NULL default '0',  naziv char(25) NOT NULL default 'NEPOZNAT',  PRIMARY KEY  (broj)) ENGINE=MyISAM;
INSERT INTO t2 VALUES (1,'jedan'),(2,'dva'),(3,'tri'),(4,'xxxxxxxxxx'),(5,'a');
CREATE TABLE t3 ( broj int(4) unsigned NOT NULL default '0',  naziv char(25) NOT NULL default 'NEPOZNAT',  PRIMARY KEY  (broj)) ENGINE=MyISAM;
INSERT INTO t3 VALUES (1,'jedan'),(2,'dva');
update t1,t2 set t1.naziv="aaaa" where t1.broj=t2.broj;
update t1,t2,t3 set t1.naziv="bbbb", t2.naziv="aaaa" where t1.broj=t2.broj and t2.broj=t3.broj;
drop table t1,t2,t3;
CREATE TABLE t1 (a int not null primary key, b int not null, key (b));
CREATE TABLE t2 (a int not null primary key, b int not null, key (b));
INSERT INTO t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
INSERT INTO t2 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
update t1,t2 set t1.a=t1.a+100;
select * from t1;
a	b
101	1
102	2
103	3
104	4
105	5
106	6
107	7
108	8
109	9
update t1,t2 set t1.a=t1.a+100 where t1.a=101;
select * from t1;
a	b
201	1
102	2
103	3
104	4
105	5
106	6
107	7
108	8
109	9
update t1,t2 set t1.b=t1.b+10 where t1.b=2;
select * from t1;
a	b
201	1
102	12
103	3
104	4
105	5
106	6
107	7
108	8
109	9
update t1,t2 set t1.b=t1.b+2,t2.b=t1.b+10 where t1.b between 3 and 5 and t2.a=t1.a-100;
select * from t1;
a	b
201	1
102	12
103	5
104	6
105	7
106	6
107	7
108	8
109	9
select * from t2;
a	b
1	1
2	2
3	13
4	14
5	15
6	6
7	7
8	8
9	9
update t1,t2 set t1.b=t2.b, t1.a=t2.a where t1.a=t2.a and not exists (select * from t2 where t2.a > 10);
drop table t1,t2;
CREATE TABLE t3 (  KEY1 varchar(50) NOT NULL default '',  PARAM_CORR_DISTANCE_RUSH double default NULL,  PARAM_CORR_DISTANCE_GEM double default NULL,  PARAM_AVG_TARE double default NULL,  PARAM_AVG_NB_DAYS double default NULL,  PARAM_DEFAULT_PROP_GEM_SRVC varchar(50) default NULL,  PARAM_DEFAULT_PROP_GEM_NO_ETIK varchar(50) default NULL,  PARAM_SCENARIO_COSTS varchar(50) default NULL,  PARAM_DEFAULT_WAGON_COST double default NULL,  tmp int(11) default NULL,  PRIMARY KEY  (KEY1)) ENGINE=MyISAM;
INSERT INTO t3 VALUES ('A',1,1,22,3.2,'R','R','BASE2',0.24,NULL);
create table t1 (A varchar(1));
insert into t1 values  ("A") ,("B"),("C"),("D");
create table t2(Z varchar(15));
insert into t2(Z)  select concat(a.a,b.a,c.a,d.a) from t1 as a, t1 as b, t1 as c, t1 as d;
update t2,t3 set Z =param_scenario_costs;
drop table t1,t2,t3;
create table t1 (a int, b int);
create table t2 (a int, b int);
insert into t1 values (1,1),(2,1),(3,1);
insert into t2 values (1,1), (3,1);
update t1 left join t2  on t1.a=t2.a set t1.b=2, t2.b=2 where t1.b=1 and t2.b=1 or t2.a is NULL;
select t1.a, t1.b,t2.a, t2.b from t1 left join t2  on t1.a=t2.a where t1.b=1 and t2.b=1 or t2.a is NULL;
a	b	a	b
2	2	NULL	NULL
drop table t1,t2;
create table t1 (a int not null auto_increment primary key, b int not null);
insert into t1 (b) values (1),(2),(3),(4);
update t1, t1 as t2 set t1.b=t2.b+1 where t1.a=t2.a;
select * from t1;
a	b
1	2
2	3
3	4
4	5
drop table t1;
create table t1(id1 smallint(5), field char(5));
create table t2(id2 smallint(5), field char(5));
insert into t1 values (1, 'a'), (2, 'aa');
insert into t2 values (1, 'b'), (2, 'bb');
select * from t1;
id1	field
1	a
2	aa
select * from t2;
id2	field
1	b
2	bb
update t2 inner join t1 on t1.id1=t2.id2
set t2.field=t1.field
where 0=1;
update t2, t1 set t2.field=t1.field
where t1.id1=t2.id2 and 0=1;
delete t1, t2 from t2 inner join t1 on t1.id1=t2.id2
where 0=1;
delete t1, t2 from t2,t1 
where t1.id1=t2.id2 and 0=1;
drop table t1,t2;
create table t1 ( a int not null, b int not null) ;
alter table t1 add index i1(a);
delete from t1 where a > 2000000;
create table t2 like t1;
insert into t2 select * from t1;
select 't2 rows before small delete', count(*) from t1;
t2 rows before small delete	count(*)
t2 rows before small delete	2000000
delete t1,t2 from t1,t2 where t1.b=t2.a and t1.a < 2;
select 't2 rows after small delete', count(*) from t2;
t2 rows after small delete	count(*)
t2 rows after small delete	1999999
select 't1 rows after small delete', count(*) from t1;
t1 rows after small delete	count(*)
t1 rows after small delete	1999999
delete t1,t2 from t1,t2 where t1.b=t2.a and t1.a < 100*1000;
select 't2 rows after big delete', count(*) from t2;
t2 rows after big delete	count(*)
t2 rows after big delete	1900001
select 't1 rows after big delete', count(*) from t1;
t1 rows after big delete	count(*)
t1 rows after big delete	1900001
drop table t1,t2;
CREATE TABLE t1 ( a int );
CREATE TABLE t2 ( a int );
DELETE t1 FROM t1, t2 AS t3;
DELETE t4 FROM t1, t1 AS t4;
DELETE t3 FROM t1 AS t3, t1 AS t4;
DELETE t1 FROM t1 AS t3, t2 AS t4;
ERROR 42S02: Unknown table 't1' in MULTI DELETE
INSERT INTO t1 values (1),(2);
INSERT INTO t2 values (1),(2);
DELETE t1 FROM t1 AS t2, t2 AS t1 where t1.a=t2.a and t1.a=1;
SELECT * from t1;
a
1
2
SELECT * from t2;
a
2
DELETE t2 FROM t1 AS t2, t2 AS t1 where t1.a=t2.a and t1.a=2;
SELECT * from t1;
a
1
SELECT * from t2;
a
2
DROP TABLE t1,t2;
create table `t1` (`p_id` int(10) unsigned NOT NULL auto_increment, `p_code` varchar(20) NOT NULL default '', `p_active` tinyint(1) unsigned NOT NULL default '1', PRIMARY KEY (`p_id`) );
create table `t2` (`c2_id` int(10) unsigned NULL auto_increment, `c2_p_id` int(10) unsigned NOT NULL default '0', `c2_note` text NOT NULL, `c2_active` tinyint(1) unsigned NOT NULL default '1', PRIMARY KEY (`c2_id`), KEY `c2_p_id` (`c2_p_id`) );
insert into t1 values (0,'A01-Comp',1);
insert into t1 values (0,'B01-Comp',1);
insert into t2 values (0,1,'A Note',1);
update t1 left join t2 on p_id = c2_p_id set c2_note = 'asdf-1' where p_id = 2;
select * from t1;
p_id	p_code	p_active
1	A01-Comp	1
2	B01-Comp	1
select * from t2;
c2_id	c2_p_id	c2_note	c2_active
1	1	A Note	1
drop table t1, t2;
create database mysqltest;
create table mysqltest.t1 (a int, b int, primary key (a));
create table mysqltest.t2 (a int, b int, primary key (a));
create table mysqltest.t3 (a int, b int, primary key (a));
grant select on mysqltest.* to mysqltest_1@localhost;
grant update on mysqltest.t1 to mysqltest_1@localhost;
update t1, t2 set t1.b=1 where t1.a=t2.a;
update t1, t2 set t1.b=(select t3.b from t3 where t1.a=t3.a) where t1.a=t2.a;
revoke all privileges on mysqltest.t1 from mysqltest_1@localhost;
revoke all privileges on mysqltest.* from mysqltest_1@localhost;
delete from mysql.user where user=_binary'mysqltest_1';
drop database mysqltest;
create table t1 (a int, primary key (a));
create table t2 (a int, primary key (a));
create table t3 (a int, primary key (a));
delete t1,t3 from t1,t2 where t1.a=t2.a and t2.a=(select t3.a from t3 where t1.a=t3.a);
ERROR 42S02: Unknown table 't3' in MULTI DELETE
drop table t1, t2, t3;
create table t1 (col1 int);
create table t2 (col1 int);
update t1,t2 set t1.col1 = (select max(col1) from t1) where t1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't1' for update in FROM clause
delete t1 from t1,t2 where t1.col1 < (select max(col1) from t1) and t1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't1' for update in FROM clause
drop table t1,t2;
create table t1 (
aclid bigint not null primary key, 
status tinyint(1) not null 
) engine = innodb;
create table t2 (
refid bigint not null primary key, 
aclid bigint, index idx_acl(aclid) 
) engine = innodb;
insert into t2 values(1,null);
delete t2, t1 from t2 left join t1 on (t2.aclid=t1.aclid) where t2.refid='1';
drop table t1, t2;
create table t1(a int);
create table t2(a int);
delete from t1,t2 using t1,t2 where t1.a=(select a from t1);
ERROR HY000: You can't specify target table 't1' for update in FROM clause
drop table t1, t2;
create table t1 ( c char(8) not null ) engine=innodb;
insert into t1 values ('0'),('1'),('2'),('3'),('4'),('5'),('6'),('7'),('8'),('9');
insert into t1 values ('A'),('B'),('C'),('D'),('E'),('F');
alter table t1 add b char(8) not null;
alter table t1 add a char(8) not null;
alter table t1 add primary key (a,b,c);
update t1 set a=c, b=c;
create table t2 like t1;
insert into t2 select * from t1;
delete t1,t2 from t2,t1 where t1.a<'B' and t2.b=t1.b;
drop table t1,t2;
create table t1 ( c char(8) not null ) engine=innodb;
insert into t1 values ('0'),('1'),('2'),('3'),('4'),('5'),('6'),('7'),('8'),('9');
insert into t1 values ('A'),('B'),('C'),('D'),('E'),('F');
alter table t1 add b char(8) not null;
alter table t1 add a char(8) not null;
alter table t1 add primary key (a,b,c);
update t1 set a=c, b=c;
create table t2 like t1;
insert into t2 select * from t1;
delete t1,t2 from t2,t1 where t1.a<'B' and t2.b=t1.b;
drop table t1,t2;
create table t1 (a int, b int);
insert into t1 values (1, 2), (2, 3), (3, 4);
create table t2 (a int);
insert into t2 values (10), (20), (30);
create view v1 as select a as b, a/10 as a from t2;
lock table t1 write;
alter table t1 add column c int default 100 after a;
update t1, v1 set t1.b=t1.a+t1.b+v1.b where t1.a=v1.a;
unlock tables;
select * from t1;
a	c	b
1	100	13
2	100	25
3	100	37
select * from t2;
a
10
20
30
drop view v1;
drop table t1, t2;
create table t1 (i1 int, i2 int, i3 int);
create table t2 (id int, c1 varchar(20), c2 varchar(20));
insert into t1 values (1,5,10),(3,7,12),(4,5,2),(9,10,15),(2,2,2);
insert into t2 values (9,"abc","def"),(5,"opq","lmn"),(2,"test t","t test");
select * from t1 order by i1;
i1	i2	i3
1	5	10
2	2	2
3	7	12
4	5	2
9	10	15
select * from t2;
id	c1	c2
9	abc	def
5	opq	lmn
2	test t	t test
update t1,t2 set t1.i2=15, t2.c2="ppc" where t1.i1=t2.id;
select * from t1 order by i1;
i1	i2	i3
1	5	10
2	15	2
3	7	12
4	5	2
9	15	15
select * from t2 order by id;
id	c1	c2
2	test t	ppc
5	opq	lmn
9	abc	ppc
delete t1.*,t2.* from t1,t2 where t1.i2=t2.id;
select * from t1 order by i1;
i1	i2	i3
2	15	2
3	7	12
9	15	15
select * from t2 order by id;
id	c1	c2
2	test t	ppc
9	abc	ppc
drop table t1, t2;
create table t1 (i1 int auto_increment not null, i2 int, i3 int, primary key (i1));
create table t2 (id int auto_increment not null, c1 varchar(20), c2 varchar(20), primary key(id));
insert into t1 values (1,5,10),(3,7,12),(4,5,2),(9,10,15),(2,2,2);
insert into t2 values (9,"abc","def"),(5,"opq","lmn"),(2,"test t","t test");
select * from t1 order by i1;
i1	i2	i3
1	5	10
2	2	2
3	7	12
4	5	2
9	10	15
select * from t2 order by id;
id	c1	c2
2	test t	t test
5	opq	lmn
9	abc	def
update t1,t2 set t1.i2=15, t2.c2="ppc" where t1.i1=t2.id;
select * from t1 order by i1;
i1	i2	i3
1	5	10
2	15	2
3	7	12
4	5	2
9	15	15
select * from t2 order by id;
id	c1	c2
2	test t	ppc
5	opq	lmn
9	abc	ppc
delete t1.*,t2.* from t1,t2 where t1.i2=t2.id;
select * from t1 order by i1;
i1	i2	i3
2	15	2
3	7	12
9	15	15
select * from t2 order by id;
id	c1	c2
2	test t	ppc
9	abc	ppc
drop table t1, t2;
CREATE TABLE `t1` (
`a` int(11) NOT NULL auto_increment,
`b` int(11) default NULL,
PRIMARY KEY  (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 ;
CREATE TABLE `t2` (
`a` int(11) NOT NULL auto_increment,
`b` int(11) default NULL,
PRIMARY KEY  (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 ;
set @sav_binlog_format=  @@session.binlog_format;
set @@session.binlog_format= mixed;
insert into t1 values (1,1),(2,2);
insert into t2 values (1,1),(4,4);
reset master;
UPDATE t2,t1 SET t2.a=t1.a+2;
ERROR 23000: Duplicate entry '3' for key 'PRIMARY'
select * from t2 /* must be (3,1), (4,4) */;
a	b
3	1
4	4
show master status /* there must be the UPDATE query event */;
File	Position	Binlog_Do_DB	Binlog_Ignore_DB
master-bin.000001	198		
delete from t1;
delete from t2;
insert into t1 values (1,2),(3,4),(4,4);
insert into t2 values (1,2),(3,4),(4,4);
reset master;
UPDATE t2,t1  SET t2.a=t2.b where t2.a=t1.a;
ERROR 23000: Duplicate entry '4' for key 'PRIMARY'
show master status /* there must be the UPDATE query event */;
File	Position	Binlog_Do_DB	Binlog_Ignore_DB
master-bin.000001	213		
drop table t1, t2;
set @@session.binlog_format= @sav_binlog_format;
drop table if exists t1, t2, t3;
CREATE TABLE t1 (a int, PRIMARY KEY (a));
CREATE TABLE t2 (a int, PRIMARY KEY (a));
CREATE TABLE t3 (a int, PRIMARY KEY (a)) ENGINE=MyISAM;
create trigger trg_del_t3 before  delete on t3 for each row insert into t1 values (1);
insert into t2 values (1),(2);
insert into t3 values (1),(2);
reset master;
delete t3.* from t2,t3 where t2.a=t3.a;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
select count(*) from t1 /* must be 1 */;
count(*)
1
select count(*) from t3 /* must be 1 */;
count(*)
1
drop table t1, t2, t3;
end of tests