innodb.result 67.2 KB
Newer Older
unknown's avatar
unknown committed
1
drop table if exists t1,t2,t3,t4;
unknown's avatar
unknown committed
2
drop database if exists mysqltest;
unknown's avatar
unknown committed
3
create table t1 (id int unsigned not null auto_increment, code tinyint unsigned not null, name char(20) not null, primary key (id), key (code), unique (name)) engine=innodb;
4 5
insert into t1 (code, name) values (1, 'Tim'), (1, 'Monty'), (2, 'David'), (2, 'Erik'), (3, 'Sasha'), (3, 'Jeremy'), (4, 'Matt');
select id, code, name from t1 order by id;
unknown's avatar
unknown committed
6 7 8 9 10 11 12 13
id	code	name
1	1	Tim
2	1	Monty
3	2	David
4	2	Erik
5	3	Sasha
6	3	Jeremy
7	4	Matt
14 15
update ignore t1 set id = 8, name = 'Sinisa' where id < 3;
select id, code, name from t1 order by id;
unknown's avatar
unknown committed
16 17 18 19 20 21 22 23
id	code	name
2	1	Monty
3	2	David
4	2	Erik
5	3	Sasha
6	3	Jeremy
7	4	Matt
8	1	Sinisa
24 25
update ignore t1 set id = id + 10, name = 'Ralph' where id < 4;
select id, code, name from t1 order by id;
unknown's avatar
unknown committed
26 27 28 29 30 31 32 33
id	code	name
3	2	David
4	2	Erik
5	3	Sasha
6	3	Jeremy
7	4	Matt
8	1	Sinisa
12	1	Ralph
34 35 36 37 38 39 40 41
drop table t1;
CREATE TABLE t1 (
id int(11) NOT NULL auto_increment,
parent_id int(11) DEFAULT '0' NOT NULL,
level tinyint(4) DEFAULT '0' NOT NULL,
PRIMARY KEY (id),
KEY parent_id (parent_id),
KEY level (level)
unknown's avatar
unknown committed
42
) engine=innodb;
43 44 45
INSERT INTO t1 VALUES (1,0,0),(3,1,1),(4,1,1),(8,2,2),(9,2,2),(17,3,2),(22,4,2),(24,4,2),(28,5,2),(29,5,2),(30,5,2),(31,6,2),(32,6,2),(33,6,2),(203,7,2),(202,7,2),(20,3,2),(157,0,0),(193,5,2),(40,7,2),(2,1,1),(15,2,2),(6,1,1),(34,6,2),(35,6,2),(16,3,2),(7,1,1),(36,7,2),(18,3,2),(26,5,2),(27,5,2),(183,4,2),(38,7,2),(25,5,2),(37,7,2),(21,4,2),(19,3,2),(5,1,1),(179,5,2);
update t1 set parent_id=parent_id+100;
select * from t1 where parent_id=102;
unknown's avatar
unknown committed
46 47 48 49
id	parent_id	level
8	102	2
9	102	2
15	102	2
50 51
update t1 set id=id+1000;
update t1 set id=1024 where id=1009;
unknown's avatar
unknown committed
52
Got one of the listed errors
53
select * from t1;
unknown's avatar
unknown committed
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
id	parent_id	level
1001	100	0
1002	101	1
1003	101	1
1004	101	1
1005	101	1
1006	101	1
1007	101	1
1008	102	2
1009	102	2
1015	102	2
1016	103	2
1017	103	2
1018	103	2
1019	103	2
1020	103	2
1021	104	2
1022	104	2
1024	104	2
1025	105	2
1026	105	2
1027	105	2
1028	105	2
1029	105	2
1030	105	2
1031	106	2
1032	106	2
1033	106	2
1034	106	2
1035	106	2
1036	107	2
1037	107	2
1038	107	2
1040	107	2
1157	100	0
1179	105	2
1183	104	2
1193	105	2
1202	107	2
1203	107	2
94 95
update ignore t1 set id=id+1;
select * from t1;
unknown's avatar
unknown committed
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
id	parent_id	level
1001	100	0
1002	101	1
1003	101	1
1004	101	1
1005	101	1
1006	101	1
1007	101	1
1008	102	2
1010	102	2
1015	102	2
1016	103	2
1017	103	2
1018	103	2
1019	103	2
1020	103	2
1021	104	2
1023	104	2
1024	104	2
1025	105	2
1026	105	2
1027	105	2
1028	105	2
1029	105	2
1030	105	2
1031	106	2
1032	106	2
1033	106	2
1034	106	2
1035	106	2
1036	107	2
1037	107	2
1039	107	2
1041	107	2
1158	100	0
1180	105	2
1184	104	2
1194	105	2
1202	107	2
1204	107	2
136 137
update ignore t1 set id=1023 where id=1010;
select * from t1 where parent_id=102;
unknown's avatar
unknown committed
138 139 140
id	parent_id	level
1008	102	2
1010	102	2
141
1015	102	2
unknown's avatar
unknown committed
142 143
explain select level from t1 where level=1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
144
1	SIMPLE	t1	ref	level	level	1	const	#	Using index
unknown's avatar
unknown committed
145 146
explain select level,id from t1 where level=1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
147
1	SIMPLE	t1	ref	level	level	1	const	#	Using index
unknown's avatar
unknown committed
148 149
explain select level,id,parent_id from t1 where level=1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
150
1	SIMPLE	t1	ref	level	level	1	const	#	
151
select level,id from t1 where level=1;
unknown's avatar
unknown committed
152 153 154 155 156 157 158
level	id
1	1002
1	1003
1	1004
1	1005
1	1006
1	1007
159
select level,id,parent_id from t1 where level=1;
unknown's avatar
unknown committed
160 161 162 163 164 165 166
level	id	parent_id
1	1002	101
1	1003	101
1	1004	101
1	1005	101
1	1006	101
1	1007	101
167
optimize table t1;
168
Table	Op	Msg_type	Msg_text
169
test.t1	optimize	note	Table does not support optimize, doing recreate + analyze instead
unknown's avatar
unknown committed
170
test.t1	optimize	status	OK
171
show keys from t1;
172
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment
unknown's avatar
unknown committed
173 174 175
t1	0	PRIMARY	1	id	A	#	NULL	NULL		BTREE	
t1	1	parent_id	1	parent_id	A	#	NULL	NULL		BTREE	
t1	1	level	1	level	A	#	NULL	NULL		BTREE	
176 177 178 179 180
drop table t1;
CREATE TABLE t1 (
gesuchnr int(11) DEFAULT '0' NOT NULL,
benutzer_id int(11) DEFAULT '0' NOT NULL,
PRIMARY KEY (gesuchnr,benutzer_id)
unknown's avatar
unknown committed
181
) engine=innodb;
182 183 184 185
replace into t1 (gesuchnr,benutzer_id) values (2,1);
replace into t1 (gesuchnr,benutzer_id) values (1,1);
replace into t1 (gesuchnr,benutzer_id) values (1,1);
select * from t1;
unknown's avatar
unknown committed
186 187 188
gesuchnr	benutzer_id
1	1
2	1
189
drop table t1;
unknown's avatar
unknown committed
190
create table t1 (a int) engine=innodb;
191 192
insert into t1 values (1), (2);
optimize table t1;
193
Table	Op	Msg_type	Msg_text
194
test.t1	optimize	note	Table does not support optimize, doing recreate + analyze instead
unknown's avatar
unknown committed
195
test.t1	optimize	status	OK
196 197
delete from t1 where a = 1;
select * from t1;
unknown's avatar
unknown committed
198 199
a
2
200
check table t1;
201
Table	Op	Msg_type	Msg_text
unknown's avatar
unknown committed
202
test.t1	check	status	OK
203
drop table t1;
unknown's avatar
unknown committed
204
create table t1 (a int,b varchar(20)) engine=innodb;
205 206 207
insert into t1 values (1,""), (2,"testing");
delete from t1 where a = 1;
select * from t1;
unknown's avatar
unknown committed
208
a	b
209
2	testing
210 211 212
create index skr on t1 (a);
insert into t1 values (3,""), (4,"testing");
analyze table t1;
213
Table	Op	Msg_type	Msg_text
214
test.t1	analyze	status	OK
215
show keys from t1;
216
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment
unknown's avatar
unknown committed
217
t1	1	skr	1	a	A	#	NULL	NULL	YES	BTREE	
218
drop table t1;
unknown's avatar
unknown committed
219
create table t1 (a int,b varchar(20),key(a)) engine=innodb;
220 221
insert into t1 values (1,""), (2,"testing");
select * from t1 where a = 1;
222 223
a	b
1	
224
drop table t1;
unknown's avatar
unknown committed
225
create table t1 (n int not null primary key) engine=innodb;
226 227 228 229
set autocommit=0;
insert into t1 values (4);
rollback;
select n, "after rollback" from t1;
unknown's avatar
unknown committed
230
n	after rollback
231 232 233
insert into t1 values (4);
commit;
select n, "after commit" from t1;
unknown's avatar
unknown committed
234 235
n	after commit
4	after commit
236 237 238
commit;
insert into t1 values (5);
insert into t1 values (4);
unknown's avatar
unknown committed
239
ERROR 23000: Duplicate entry '4' for key 'PRIMARY'
240 241
commit;
select n, "after commit" from t1;
unknown's avatar
unknown committed
242 243 244
n	after commit
4	after commit
5	after commit
245 246 247
set autocommit=1;
insert into t1 values (6);
insert into t1 values (4);
unknown's avatar
unknown committed
248
ERROR 23000: Duplicate entry '4' for key 'PRIMARY'
249
select n from t1;
unknown's avatar
unknown committed
250 251 252 253
n
4
5
6
unknown's avatar
unknown committed
254 255 256 257 258 259 260 261 262 263 264 265 266
set autocommit=0;
begin;
savepoint `my_savepoint`;
insert into t1 values (7);
savepoint `savept2`;
insert into t1 values (3);
select n from t1;
n
3
4
5
6
7
267 268 269 270 271
savepoint savept3;
rollback to savepoint savept2;
rollback to savepoint savept3;
ERROR 42000: SAVEPOINT savept3 does not exist
rollback to savepoint savept2;
unknown's avatar
unknown committed
272 273 274 275 276 277 278 279
release savepoint `my_savepoint`;
select n from t1;
n
4
5
6
7
rollback to savepoint `my_savepoint`;
unknown's avatar
unknown committed
280
ERROR 42000: SAVEPOINT my_savepoint does not exist
281 282
rollback to savepoint savept2;
ERROR 42000: SAVEPOINT savept2 does not exist
283 284 285 286
insert into t1 values (8);
savepoint sv;
commit;
savepoint sv;
unknown's avatar
unknown committed
287
set autocommit=1;
288 289
rollback;
drop table t1;
unknown's avatar
unknown committed
290
create table t1 (n int not null primary key) engine=innodb;
291 292 293 294 295 296 297 298 299 300
start transaction;
insert into t1 values (4);
flush tables with read lock;
commit;
unlock tables;
commit;
select * from t1;
n
4
drop table t1;
unknown's avatar
unknown committed
301
create table t1 ( id int NOT NULL PRIMARY KEY, nom varchar(64)) engine=innodb;
302 303 304
begin;
insert into t1 values(1,'hamdouni');
select id as afterbegin_id,nom as afterbegin_nom from t1;
unknown's avatar
unknown committed
305 306
afterbegin_id	afterbegin_nom
1	hamdouni
307 308
rollback;
select id as afterrollback_id,nom as afterrollback_nom from t1;
unknown's avatar
unknown committed
309
afterrollback_id	afterrollback_nom
310 311 312
set autocommit=0;
insert into t1 values(2,'mysql');
select id as afterautocommit0_id,nom as afterautocommit0_nom from t1;
unknown's avatar
unknown committed
313 314
afterautocommit0_id	afterautocommit0_nom
2	mysql
315 316
rollback;
select id as afterrollback_id,nom as afterrollback_nom from t1;
unknown's avatar
unknown committed
317
afterrollback_id	afterrollback_nom
318 319
set autocommit=1;
drop table t1;
unknown's avatar
unknown committed
320
CREATE TABLE t1 (id char(8) not null primary key, val int not null) engine=innodb;
321 322
insert into t1 values ('pippo', 12);
insert into t1 values ('pippo', 12);
unknown's avatar
unknown committed
323
ERROR 23000: Duplicate entry 'pippo' for key 'PRIMARY'
324 325 326
delete from t1;
delete from t1 where id = 'pippo';
select * from t1;
unknown's avatar
unknown committed
327
id	val
328 329 330 331 332
insert into t1 values ('pippo', 12);
set autocommit=0;
delete from t1;
rollback;
select * from t1;
unknown's avatar
unknown committed
333 334
id	val
pippo	12
335 336 337
delete from t1;
commit;
select * from t1;
unknown's avatar
unknown committed
338
id	val
339
drop table t1;
unknown's avatar
unknown committed
340
create table t1 (a integer) engine=innodb;
unknown's avatar
unknown committed
341
start transaction;
342
rename table t1 to t2;
unknown's avatar
unknown committed
343
create table t1 (b integer) engine=innodb;
344 345 346 347 348 349
insert into t1 values (1);
rollback;
drop table t1;
rename table t2 to t1;
drop table t1;
set autocommit=1;
unknown's avatar
unknown committed
350
CREATE TABLE t1 (ID INTEGER NOT NULL PRIMARY KEY, NAME VARCHAR(64)) ENGINE=innodb;
351 352
INSERT INTO t1 VALUES (1, 'Jochen');
select * from t1;
unknown's avatar
unknown committed
353 354
ID	NAME
1	Jochen
355
drop table t1;
unknown's avatar
unknown committed
356
CREATE TABLE t1 ( _userid VARCHAR(60) NOT NULL PRIMARY KEY) ENGINE=innodb;
357 358 359 360
set autocommit=0;
INSERT INTO t1  SET _userid='marc@anyware.co.uk';
COMMIT;
SELECT * FROM t1;
unknown's avatar
unknown committed
361 362
_userid
marc@anyware.co.uk
363
SELECT _userid FROM t1 WHERE _userid='marc@anyware.co.uk';
unknown's avatar
unknown committed
364 365
_userid
marc@anyware.co.uk
366 367 368 369 370 371 372 373 374
drop table t1;
set autocommit=1;
CREATE TABLE t1 (
user_id int(10) DEFAULT '0' NOT NULL,
name varchar(100),
phone varchar(100),
ref_email varchar(100) DEFAULT '' NOT NULL,
detail varchar(200),
PRIMARY KEY (user_id,ref_email)
unknown's avatar
unknown committed
375
)engine=innodb;
376 377
INSERT INTO t1 VALUES (10292,'sanjeev','29153373','sansh777@hotmail.com','xxx'),(10292,'shirish','2333604','shirish@yahoo.com','ddsds'),(10292,'sonali','323232','sonali@bolly.com','filmstar');
select * from t1 where user_id=10292;
unknown's avatar
unknown committed
378 379 380 381
user_id	name	phone	ref_email	detail
10292	sanjeev	29153373	sansh777@hotmail.com	xxx
10292	shirish	2333604	shirish@yahoo.com	ddsds
10292	sonali	323232	sonali@bolly.com	filmstar
382 383
INSERT INTO t1 VALUES (10291,'sanjeev','29153373','sansh777@hotmail.com','xxx'),(10293,'shirish','2333604','shirish@yahoo.com','ddsds');
select * from t1 where user_id=10292;
unknown's avatar
unknown committed
384 385 386 387
user_id	name	phone	ref_email	detail
10292	sanjeev	29153373	sansh777@hotmail.com	xxx
10292	shirish	2333604	shirish@yahoo.com	ddsds
10292	sonali	323232	sonali@bolly.com	filmstar
388
select * from t1 where user_id>=10292;
unknown's avatar
unknown committed
389 390 391 392 393
user_id	name	phone	ref_email	detail
10292	sanjeev	29153373	sansh777@hotmail.com	xxx
10292	shirish	2333604	shirish@yahoo.com	ddsds
10292	sonali	323232	sonali@bolly.com	filmstar
10293	shirish	2333604	shirish@yahoo.com	ddsds
394
select * from t1 where user_id>10292;
unknown's avatar
unknown committed
395 396
user_id	name	phone	ref_email	detail
10293	shirish	2333604	shirish@yahoo.com	ddsds
397
select * from t1 where user_id<10292;
unknown's avatar
unknown committed
398 399
user_id	name	phone	ref_email	detail
10291	sanjeev	29153373	sansh777@hotmail.com	xxx
400 401 402 403
drop table t1;
CREATE TABLE t1 (a int not null, b int not null,c int not null,
key(a),primary key(a,b), unique(c),key(a),unique(b));
show index from t1;
404
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment
unknown's avatar
unknown committed
405 406 407 408 409
t1	0	PRIMARY	1	a	A	#	NULL	NULL		BTREE	
t1	0	PRIMARY	2	b	A	#	NULL	NULL		BTREE	
t1	0	c	1	c	A	#	NULL	NULL		BTREE	
t1	0	b	1	b	A	#	NULL	NULL		BTREE	
t1	1	a	1	a	A	#	NULL	NULL		BTREE	
410
t1	1	a_2	1	a	A	#	NULL	NULL		BTREE	
411 412
drop table t1;
create table t1 (col1 int not null, col2 char(4) not null, primary key(col1));
unknown's avatar
unknown committed
413
alter table t1 engine=innodb;
414 415
insert into t1 values ('1','1'),('5','2'),('2','3'),('3','4'),('4','4');
select * from t1;
unknown's avatar
unknown committed
416 417 418 419 420 421
col1	col2
1	1
2	3
3	4
4	4
5	2
422 423
update t1 set col2='7' where col1='4';
select * from t1;
unknown's avatar
unknown committed
424 425 426 427 428 429
col1	col2
1	1
2	3
3	4
4	7
5	2
430 431
alter table t1 add co3 int not null;
select * from t1;
unknown's avatar
unknown committed
432 433 434 435 436 437
col1	col2	co3
1	1	0
2	3	0
3	4	0
4	7	0
5	2	0
438 439
update t1 set col2='9' where col1='2';
select * from t1;
unknown's avatar
unknown committed
440 441 442 443 444 445
col1	col2	co3
1	1	0
2	9	0
3	4	0
4	7	0
5	2	0
446
drop table t1;
unknown's avatar
unknown committed
447 448
create table t1 (a int not null , b int, primary key (a)) engine = innodb;
create table t2 (a int not null , b int, primary key (a)) engine = myisam;
449 450
insert into t1 VALUES (1,3) , (2,3), (3,3);
select * from t1;
unknown's avatar
unknown committed
451 452 453 454
a	b
1	3
2	3
3	3
455 456
insert into t2 select * from t1;
select * from t2;
unknown's avatar
unknown committed
457 458 459 460
a	b
1	3
2	3
3	3
461 462
delete from t1 where b = 3;
select * from t1;
unknown's avatar
unknown committed
463
a	b
464 465
insert into t1 select * from t2;
select * from t1;
unknown's avatar
unknown committed
466 467 468 469
a	b
1	3
2	3
3	3
470
select * from t2;
unknown's avatar
unknown committed
471 472 473 474
a	b
1	3
2	3
3	3
475 476 477 478 479 480 481 482 483 484 485 486 487
drop table t1,t2;
CREATE TABLE t1 (
user_name varchar(12),
password text,
subscribed char(1),
user_id int(11) DEFAULT '0' NOT NULL,
quota bigint(20),
weight double,
access_date date,
access_time time,
approved datetime,
dummy_primary_key int(11) NOT NULL auto_increment,
PRIMARY KEY (dummy_primary_key)
unknown's avatar
unknown committed
488
) ENGINE=innodb;
489 490 491 492 493 494
INSERT INTO t1 VALUES ('user_0','somepassword','N',0,0,0,'2000-09-07','23:06:59','2000-09-07 23:06:59',1);
INSERT INTO t1 VALUES ('user_1','somepassword','Y',1,1,1,'2000-09-07','23:06:59','2000-09-07 23:06:59',2);
INSERT INTO t1 VALUES ('user_2','somepassword','N',2,2,1.4142135623731,'2000-09-07','23:06:59','2000-09-07 23:06:59',3);
INSERT INTO t1 VALUES ('user_3','somepassword','Y',3,3,1.7320508075689,'2000-09-07','23:06:59','2000-09-07 23:06:59',4);
INSERT INTO t1 VALUES ('user_4','somepassword','N',4,4,2,'2000-09-07','23:06:59','2000-09-07 23:06:59',5);
select  user_name, password , subscribed, user_id, quota, weight, access_date, access_time, approved, dummy_primary_key from t1 order by user_name;
unknown's avatar
unknown committed
495 496 497 498 499 500
user_name	password	subscribed	user_id	quota	weight	access_date	access_time	approved	dummy_primary_key
user_0	somepassword	N	0	0	0	2000-09-07	23:06:59	2000-09-07 23:06:59	1
user_1	somepassword	Y	1	1	1	2000-09-07	23:06:59	2000-09-07 23:06:59	2
user_2	somepassword	N	2	2	1.4142135623731	2000-09-07	23:06:59	2000-09-07 23:06:59	3
user_3	somepassword	Y	3	3	1.7320508075689	2000-09-07	23:06:59	2000-09-07 23:06:59	4
user_4	somepassword	N	4	4	2	2000-09-07	23:06:59	2000-09-07 23:06:59	5
501 502 503 504 505 506 507 508
drop table t1;
CREATE TABLE t1 (
id int(11) NOT NULL auto_increment,
parent_id int(11) DEFAULT '0' NOT NULL,
level tinyint(4) DEFAULT '0' NOT NULL,
KEY (id),
KEY parent_id (parent_id),
KEY level (level)
unknown's avatar
unknown committed
509
) engine=innodb;
510 511 512 513
INSERT INTO t1 VALUES (1,0,0),(3,1,1),(4,1,1),(8,2,2),(9,2,2),(17,3,2),(22,4,2),(24,4,2),(28,5,2),(29,5,2),(30,5,2),(31,6,2),(32,6,2),(33,6,2),(203,7,2),(202,7,2),(20,3,2),(157,0,0),(193,5,2),(40,7,2),(2,1,1),(15,2,2),(6,1,1),(34,6,2),(35,6,2),(16,3,2),(7,1,1),(36,7,2),(18,3,2),(26,5,2),(27,5,2),(183,4,2),(38,7,2),(25,5,2),(37,7,2),(21,4,2),(19,3,2),(5,1,1);
INSERT INTO t1 values (179,5,2);
update t1 set parent_id=parent_id+100;
select * from t1 where parent_id=102;
unknown's avatar
unknown committed
514 515 516 517
id	parent_id	level
8	102	2
9	102	2
15	102	2
518 519 520
update t1 set id=id+1000;
update t1 set id=1024 where id=1009;
select * from t1;
unknown's avatar
unknown committed
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
id	parent_id	level
1001	100	0
1003	101	1
1004	101	1
1008	102	2
1024	102	2
1017	103	2
1022	104	2
1024	104	2
1028	105	2
1029	105	2
1030	105	2
1031	106	2
1032	106	2
1033	106	2
1203	107	2
1202	107	2
1020	103	2
1157	100	0
1193	105	2
1040	107	2
1002	101	1
1015	102	2
1006	101	1
1034	106	2
1035	106	2
1016	103	2
1007	101	1
1036	107	2
1018	103	2
1026	105	2
1027	105	2
1183	104	2
1038	107	2
1025	105	2
1037	107	2
1021	104	2
1019	103	2
1005	101	1
1179	105	2
561 562
update ignore t1 set id=id+1;
select * from t1;
unknown's avatar
unknown committed
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
id	parent_id	level
1002	100	0
1004	101	1
1005	101	1
1009	102	2
1025	102	2
1018	103	2
1023	104	2
1025	104	2
1029	105	2
1030	105	2
1031	105	2
1032	106	2
1033	106	2
1034	106	2
1204	107	2
1203	107	2
1021	103	2
1158	100	0
1194	105	2
1041	107	2
1003	101	1
1016	102	2
1007	101	1
1035	106	2
1036	106	2
1017	103	2
1008	101	1
1037	107	2
1019	103	2
1027	105	2
1028	105	2
1184	104	2
1039	107	2
1026	105	2
1038	107	2
1022	104	2
1020	103	2
1006	101	1
1180	105	2
603 604
update ignore t1 set id=1023 where id=1010;
select * from t1 where parent_id=102;
unknown's avatar
unknown committed
605 606 607 608
id	parent_id	level
1009	102	2
1025	102	2
1016	102	2
unknown's avatar
unknown committed
609 610
explain select level from t1 where level=1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
611
1	SIMPLE	t1	ref	level	level	1	const	#	Using index
612
select level,id from t1 where level=1;
unknown's avatar
unknown committed
613 614 615 616 617 618 619
level	id
1	1004
1	1005
1	1003
1	1007
1	1008
1	1006
620
select level,id,parent_id from t1 where level=1;
unknown's avatar
unknown committed
621 622 623 624 625 626 627
level	id	parent_id
1	1004	101
1	1005	101
1	1003	101
1	1007	101
1	1008	101
1	1006	101
628
select level,id from t1 where level=1 order by id;
unknown's avatar
unknown committed
629 630 631 632 633 634 635
level	id
1	1003
1	1004
1	1005
1	1006
1	1007
1	1008
636 637
delete from t1 where level=1;
select * from t1;
unknown's avatar
unknown committed
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
id	parent_id	level
1002	100	0
1009	102	2
1025	102	2
1018	103	2
1023	104	2
1025	104	2
1029	105	2
1030	105	2
1031	105	2
1032	106	2
1033	106	2
1034	106	2
1204	107	2
1203	107	2
1021	103	2
1158	100	0
1194	105	2
1041	107	2
1016	102	2
1035	106	2
1036	106	2
1017	103	2
1037	107	2
1019	103	2
1027	105	2
1028	105	2
1184	104	2
1039	107	2
1026	105	2
1038	107	2
1022	104	2
1020	103	2
1180	105	2
672 673 674 675 676 677 678 679 680 681 682
drop table t1;
CREATE TABLE t1 (
sca_code char(6) NOT NULL,
cat_code char(6) NOT NULL,
sca_desc varchar(50),
lan_code char(2) NOT NULL,
sca_pic varchar(100),
sca_sdesc varchar(50),
sca_sch_desc varchar(16),
PRIMARY KEY (sca_code, cat_code, lan_code),
INDEX sca_pic (sca_pic)
unknown's avatar
unknown committed
683
) engine = innodb ;
684 685
INSERT INTO t1 ( sca_code, cat_code, sca_desc, lan_code, sca_pic, sca_sdesc, sca_sch_desc) VALUES ( 'PD', 'J', 'PENDANT', 'EN', NULL, NULL, 'PENDANT'),( 'RI', 'J', 'RING', 'EN', NULL, NULL, 'RING'),( 'QQ', 'N', 'RING', 'EN', 'not null', NULL, 'RING');
select count(*) from t1 where sca_code = 'PD';
unknown's avatar
unknown committed
686 687
count(*)
1
688
select count(*) from t1 where sca_code <= 'PD';
689 690
count(*)
1
691
select count(*) from t1 where sca_pic is null;
692 693
count(*)
2
694 695
alter table t1 drop index sca_pic, add index sca_pic (cat_code, sca_pic);
select count(*) from t1 where sca_code='PD' and sca_pic is null;
696 697
count(*)
1
698
select count(*) from t1 where cat_code='E';
699 700
count(*)
0
701 702
alter table t1 drop index sca_pic, add index (sca_pic, cat_code);
select count(*) from t1 where sca_code='PD' and sca_pic is null;
703 704
count(*)
1
705
select count(*) from t1 where sca_pic >= 'n';
706 707
count(*)
1
708
select sca_pic from t1 where sca_pic is null;
709 710 711
sca_pic
NULL
NULL
712 713 714 715
update t1 set sca_pic="test" where sca_pic is null;
delete from t1 where sca_code='pd';
drop table t1;
set @a:=now();
unknown's avatar
unknown committed
716
CREATE TABLE t1 (a int not null, b timestamp not null, primary key (a)) engine=innodb;
717
insert into t1 (a) values(1),(2),(3);
718 719 720 721 722
select t1.a from t1 natural join t1 as t2 where t1.b >= @a order by t1.a;
a
1
2
3
unknown's avatar
unknown committed
723
select a from t1 natural join t1 as t2 where b >= @a order by a;
unknown's avatar
unknown committed
724 725 726 727
a
1
2
3
728 729
update t1 set a=5 where a=1;
select a from t1;
730 731 732 733
a
2
3
5
734
drop table t1;
unknown's avatar
unknown committed
735
create table t1 (a varchar(100) not null, primary key(a), b int not null) engine=innodb;
736 737
insert into t1 values("hello",1),("world",2);
select * from t1 order by b desc;
738 739 740
a	b
world	2
hello	1
741
optimize table t1;
742
Table	Op	Msg_type	Msg_text
743
test.t1	optimize	note	Table does not support optimize, doing recreate + analyze instead
unknown's avatar
unknown committed
744
test.t1	optimize	status	OK
745
show keys from t1;
746
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment
unknown's avatar
unknown committed
747
t1	0	PRIMARY	1	a	A	#	NULL	NULL		BTREE	
748
drop table t1;
unknown's avatar
unknown committed
749
create table t1 (i int, j int ) ENGINE=innodb;
750 751
insert into t1 values (1,2);
select * from t1 where i=1 and j=2;
752 753
i	j
1	2
754 755
create index ax1 on t1 (i,j);
select * from t1 where i=1 and j=2;
756 757
i	j
1	2
758 759 760 761 762
drop table t1;
CREATE TABLE t1 (
a int3 unsigned NOT NULL,
b int1 unsigned NOT NULL,
UNIQUE (a, b)
unknown's avatar
unknown committed
763
) ENGINE = innodb;
764 765
INSERT INTO t1 VALUES (1, 1);
SELECT MIN(B),MAX(b) FROM t1 WHERE t1.a = 1;
766 767
MIN(B)	MAX(b)
1	1
768
drop table t1;
unknown's avatar
unknown committed
769
CREATE TABLE t1 (a int unsigned NOT NULL) engine=innodb;
770 771
INSERT INTO t1 VALUES (1);
SELECT * FROM t1;
unknown's avatar
unknown committed
772 773
a
1
774
DROP TABLE t1;
unknown's avatar
unknown committed
775
create table t1 (a int  primary key,b int, c int, d int, e int, f int, g int, h int, i int, j int, k int, l int, m int, n int, o int, p int, q int, r int, s int, t int, u int, v int, w int, x int, y int, z int, a1 int, a2 int, a3 int, a4 int, a5 int, a6 int, a7 int, a8 int, a9 int, b1 int, b2 int, b3 int, b4 int, b5 int, b6 int) engine = innodb;
776 777
insert into t1 values (1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1);
explain select * from t1 where a > 0 and a < 50;
unknown's avatar
unknown committed
778
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
unknown's avatar
unknown committed
779
1	SIMPLE	t1	range	PRIMARY	PRIMARY	4	NULL	#	Using where
780
drop table t1;
unknown's avatar
unknown committed
781
create table t1 (id int NOT NULL,id2 int NOT NULL,id3 int NOT NULL,dummy1 char(30),primary key (id,id2),index index_id3 (id3)) engine=innodb;
782 783 784
insert into t1 values (0,0,0,'ABCDEFGHIJ'),(2,2,2,'BCDEFGHIJK'),(1,1,1,'CDEFGHIJKL');
LOCK TABLES t1 WRITE;
insert into t1 values (99,1,2,'D'),(1,1,2,'D');
unknown's avatar
unknown committed
785
ERROR 23000: Duplicate entry '1-1' for key 'PRIMARY'
786
select id from t1;
unknown's avatar
unknown committed
787 788 789 790
id
0
1
2
791
select id from t1;
unknown's avatar
unknown committed
792 793 794 795
id
0
1
2
796 797
UNLOCK TABLES;
DROP TABLE t1;
unknown's avatar
unknown committed
798
create table t1 (id int NOT NULL,id2 int NOT NULL,id3 int NOT NULL,dummy1 char(30),primary key (id,id2),index index_id3 (id3)) engine=innodb;
799 800 801 802
insert into t1 values (0,0,0,'ABCDEFGHIJ'),(2,2,2,'BCDEFGHIJK'),(1,1,1,'CDEFGHIJKL');
LOCK TABLES t1 WRITE;
begin;
insert into t1 values (99,1,2,'D'),(1,1,2,'D');
unknown's avatar
unknown committed
803
ERROR 23000: Duplicate entry '1-1' for key 'PRIMARY'
804
select id from t1;
unknown's avatar
unknown committed
805 806 807 808
id
0
1
2
809 810 811
insert ignore into t1 values (100,1,2,'D'),(1,1,99,'D');
commit;
select id,id3 from t1;
unknown's avatar
unknown committed
812 813 814 815 816
id	id3
0	0
1	1
2	2
100	2
817 818
UNLOCK TABLES;
DROP TABLE t1;
unknown's avatar
unknown committed
819
create table t1 (a char(20), unique (a(5))) engine=innodb;
unknown's avatar
unknown committed
820
drop table t1;
unknown's avatar
unknown committed
821
create table t1 (a char(20), index (a(5))) engine=innodb;
822
show create table t1;
unknown's avatar
unknown committed
823 824
Table	Create Table
t1	CREATE TABLE `t1` (
unknown's avatar
unknown committed
825
  `a` char(20) DEFAULT NULL,
unknown's avatar
unknown committed
826
  KEY `a` (`a`(5))
unknown's avatar
unknown committed
827
) ENGINE=InnoDB DEFAULT CHARSET=latin1
828
drop table t1;
unknown's avatar
unknown committed
829
create temporary table t1 (a int not null auto_increment, primary key(a)) engine=innodb;
830 831 832 833
insert into t1 values (NULL),(NULL),(NULL);
delete from t1 where a=3;
insert into t1 values (NULL);
select * from t1;
unknown's avatar
unknown committed
834 835 836
a
1
2
837
4
838 839 840 841 842 843
alter table t1 add b int;
select * from t1;
a	b
1	NULL
2	NULL
4	NULL
844 845 846 847 848 849 850 851
drop table t1;
create table t1
(
id int auto_increment primary key,
name varchar(32) not null,
value text not null,
uid int not null,
unique key(name,uid)
unknown's avatar
unknown committed
852
) engine=innodb;
853 854 855 856 857 858 859 860 861 862
insert into t1 values (1,'one','one value',101),
(2,'two','two value',102),(3,'three','three value',103);
set insert_id=5;
replace into t1 (value,name,uid) values ('other value','two',102);
delete from t1 where uid=102;
set insert_id=5;
replace into t1 (value,name,uid) values ('other value','two',102);
set insert_id=6;
replace into t1 (value,name,uid) values ('other value','two',102);
select * from t1;
863 864 865 866
id	name	value	uid
1	one	one value	101
3	three	three value	103
6	two	other value	102
867
drop table t1;
868
create database mysqltest;
unknown's avatar
unknown committed
869
create table mysqltest.t1 (a int not null) engine= innodb;
870
insert into mysqltest.t1 values(1);
unknown's avatar
unknown committed
871
create table mysqltest.t2 (a int not null) engine= myisam;
872
insert into mysqltest.t2 values(1);
unknown's avatar
unknown committed
873
create table mysqltest.t3 (a int not null) engine= heap;
874
insert into mysqltest.t3 values(1);
875
commit;
876 877
drop database mysqltest;
show tables from mysqltest;
unknown's avatar
unknown committed
878
ERROR 42000: Unknown database 'mysqltest'
unknown's avatar
unknown committed
879
set autocommit=0;
unknown's avatar
unknown committed
880
create table t1 (a int not null) engine= innodb;
881 882 883 884
insert into t1 values(1),(2);
truncate table t1;
commit;
truncate table t1;
885
truncate table t1;
886
select * from t1;
unknown's avatar
unknown committed
887
a
888 889 890
insert into t1 values(1),(2);
delete from t1;
select * from t1;
unknown's avatar
unknown committed
891
a
892 893
commit;
drop table t1;
unknown's avatar
unknown committed
894
set autocommit=1;
unknown's avatar
unknown committed
895
create table t1 (a int not null) engine= innodb;
unknown's avatar
unknown committed
896 897 898 899 900 901 902 903 904 905 906 907 908
insert into t1 values(1),(2);
truncate table t1;
insert into t1 values(1),(2);
select * from t1;
a
1
2
truncate table t1;
insert into t1 values(1),(2);
delete from t1;
select * from t1;
a
drop table t1;
unknown's avatar
unknown committed
909
create table t1 (a int not null, b int not null, c int not null, primary key (a),key(b)) engine=innodb;
unknown's avatar
unknown committed
910 911
insert into t1 values (3,3,3),(1,1,1),(2,2,2),(4,4,4);
explain select * from t1 order by a;
unknown's avatar
unknown committed
912
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
unknown's avatar
unknown committed
913
1	SIMPLE	t1	index	NULL	PRIMARY	4	NULL	#	
unknown's avatar
unknown committed
914
explain select * from t1 order by b;
unknown's avatar
unknown committed
915
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
unknown's avatar
unknown committed
916
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	#	Using filesort
unknown's avatar
unknown committed
917
explain select * from t1 order by c;
unknown's avatar
unknown committed
918
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
unknown's avatar
unknown committed
919
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	#	Using filesort
unknown's avatar
unknown committed
920
explain select a from t1 order by a;
unknown's avatar
unknown committed
921
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
unknown's avatar
unknown committed
922
1	SIMPLE	t1	index	NULL	PRIMARY	4	NULL	#	Using index
unknown's avatar
unknown committed
923
explain select b from t1 order by b;
unknown's avatar
unknown committed
924
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
unknown's avatar
unknown committed
925
1	SIMPLE	t1	index	NULL	b	4	NULL	#	Using index
unknown's avatar
unknown committed
926
explain select a,b from t1 order by b;
unknown's avatar
unknown committed
927
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
unknown's avatar
unknown committed
928
1	SIMPLE	t1	index	NULL	b	4	NULL	#	Using index
unknown's avatar
unknown committed
929
explain select a,b from t1;
unknown's avatar
unknown committed
930
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
931
1	SIMPLE	t1	index	NULL	b	4	NULL	#	Using index
unknown's avatar
unknown committed
932
explain select a,b,c from t1;
unknown's avatar
unknown committed
933
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
unknown's avatar
unknown committed
934
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	#	
unknown's avatar
unknown committed
935
drop table t1;
unknown's avatar
unknown committed
936
create table t1 (t int not null default 1, key (t)) engine=innodb;
unknown's avatar
unknown committed
937
desc t1;
938
Field	Type	Null	Key	Default	Extra
939
t	int(11)	NO	MUL	1	
unknown's avatar
unknown committed
940
drop table t1;
unknown's avatar
unknown committed
941 942 943 944 945
CREATE TABLE t1 (
number bigint(20) NOT NULL default '0',
cname char(15) NOT NULL default '',
carrier_id smallint(6) NOT NULL default '0',
privacy tinyint(4) NOT NULL default '0',
946
last_mod_date timestamp NOT NULL,
unknown's avatar
unknown committed
947
last_mod_id smallint(6) NOT NULL default '0',
948
last_app_date timestamp NOT NULL,
unknown's avatar
unknown committed
949 950 951 952
last_app_id smallint(6) default '-1',
version smallint(6) NOT NULL default '0',
assigned_scps int(11) default '0',
status tinyint(4) default '0'
unknown's avatar
unknown committed
953
) ENGINE=InnoDB;
unknown's avatar
unknown committed
954 955 956 957 958 959 960 961 962 963 964
INSERT INTO t1 VALUES (4077711111,'SeanWheeler',90,2,20020111112846,500,00000000000000,-1,2,3,1);
INSERT INTO t1 VALUES (9197722223,'berry',90,3,20020111112809,500,20020102114532,501,4,10,0);
INSERT INTO t1 VALUES (650,'San Francisco',0,0,20011227111336,342,00000000000000,-1,1,24,1);
INSERT INTO t1 VALUES (302467,'Sue\'s Subshop',90,3,20020109113241,500,20020102115111,501,7,24,0);
INSERT INTO t1 VALUES (6014911113,'SudzCarwash',520,1,20020102115234,500,20020102115259,501,33,32768,0);
INSERT INTO t1 VALUES (333,'tubs',99,2,20020109113440,501,20020109113440,500,3,10,0);
CREATE TABLE t2 (
number bigint(20) NOT NULL default '0',
cname char(15) NOT NULL default '',
carrier_id smallint(6) NOT NULL default '0',
privacy tinyint(4) NOT NULL default '0',
965
last_mod_date timestamp NOT NULL,
unknown's avatar
unknown committed
966
last_mod_id smallint(6) NOT NULL default '0',
967
last_app_date timestamp NOT NULL,
unknown's avatar
unknown committed
968 969 970 971
last_app_id smallint(6) default '-1',
version smallint(6) NOT NULL default '0',
assigned_scps int(11) default '0',
status tinyint(4) default '0'
unknown's avatar
unknown committed
972
) ENGINE=InnoDB;
unknown's avatar
unknown committed
973 974 975 976 977 978
INSERT INTO t2 VALUES (4077711111,'SeanWheeler',0,2,20020111112853,500,00000000000000,-1,2,3,1);
INSERT INTO t2 VALUES (9197722223,'berry',90,3,20020111112818,500,20020102114532,501,4,10,0);
INSERT INTO t2 VALUES (650,'San Francisco',90,0,20020109113158,342,00000000000000,-1,1,24,1);
INSERT INTO t2 VALUES (333,'tubs',99,2,20020109113453,501,20020109113453,500,3,10,0);
select * from t1;
number	cname	carrier_id	privacy	last_mod_date	last_mod_id	last_app_date	last_app_id	version	assigned_scps	status
979 980 981 982 983 984
4077711111	SeanWheeler	90	2	2002-01-11 11:28:46	500	0000-00-00 00:00:00	-1	2	3	1
9197722223	berry	90	3	2002-01-11 11:28:09	500	2002-01-02 11:45:32	501	4	10	0
650	San Francisco	0	0	2001-12-27 11:13:36	342	0000-00-00 00:00:00	-1	1	24	1
302467	Sue's Subshop	90	3	2002-01-09 11:32:41	500	2002-01-02 11:51:11	501	7	24	0
6014911113	SudzCarwash	520	1	2002-01-02 11:52:34	500	2002-01-02 11:52:59	501	33	32768	0
333	tubs	99	2	2002-01-09 11:34:40	501	2002-01-09 11:34:40	500	3	10	0
unknown's avatar
unknown committed
985 986
select * from t2;
number	cname	carrier_id	privacy	last_mod_date	last_mod_id	last_app_date	last_app_id	version	assigned_scps	status
987 988 989 990
4077711111	SeanWheeler	0	2	2002-01-11 11:28:53	500	0000-00-00 00:00:00	-1	2	3	1
9197722223	berry	90	3	2002-01-11 11:28:18	500	2002-01-02 11:45:32	501	4	10	0
650	San Francisco	90	0	2002-01-09 11:31:58	342	0000-00-00 00:00:00	-1	1	24	1
333	tubs	99	2	2002-01-09 11:34:53	501	2002-01-09 11:34:53	500	3	10	0
unknown's avatar
unknown committed
991 992 993
delete t1, t2 from t1 left join t2 on t1.number=t2.number where (t1.carrier_id=90 and t1.number=t2.number) or (t2.carrier_id=90 and t1.number=t2.number) or  (t1.carrier_id=90 and t2.number is null);
select * from t1;
number	cname	carrier_id	privacy	last_mod_date	last_mod_id	last_app_date	last_app_id	version	assigned_scps	status
994 995
6014911113	SudzCarwash	520	1	2002-01-02 11:52:34	500	2002-01-02 11:52:59	501	33	32768	0
333	tubs	99	2	2002-01-09 11:34:40	501	2002-01-09 11:34:40	500	3	10	0
unknown's avatar
unknown committed
996 997
select * from t2;
number	cname	carrier_id	privacy	last_mod_date	last_mod_id	last_app_date	last_app_id	version	assigned_scps	status
998
333	tubs	99	2	2002-01-09 11:34:53	501	2002-01-09 11:34:53	500	3	10	0
unknown's avatar
unknown committed
999 1000
select * from t2;
number	cname	carrier_id	privacy	last_mod_date	last_mod_id	last_app_date	last_app_id	version	assigned_scps	status
1001
333	tubs	99	2	2002-01-09 11:34:53	501	2002-01-09 11:34:53	500	3	10	0
unknown's avatar
unknown committed
1002
drop table t1,t2;
unknown's avatar
unknown committed
1003
create table t1 (id int unsigned not null auto_increment, code tinyint unsigned not null, name char(20) not null, primary key (id), key (code), unique (name)) engine=innodb;
unknown's avatar
unknown committed
1004 1005 1006
BEGIN;
SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE;
SELECT @@tx_isolation,@@global.tx_isolation;
unknown's avatar
unknown committed
1007
@@tx_isolation	@@global.tx_isolation
unknown's avatar
unknown committed
1008
SERIALIZABLE	REPEATABLE-READ
unknown's avatar
unknown committed
1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026
insert into t1 (code, name) values (1, 'Tim'), (1, 'Monty'), (2, 'David');
select id, code, name from t1 order by id;
id	code	name
1	1	Tim
2	1	Monty
3	2	David
COMMIT;
BEGIN;
SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;
insert into t1 (code, name) values (2, 'Erik'), (3, 'Sasha');
select id, code, name from t1 order by id;
id	code	name
1	1	Tim
2	1	Monty
3	2	David
4	2	Erik
5	3	Sasha
COMMIT;
1027
SET binlog_format='MIXED';
unknown's avatar
unknown committed
1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041
BEGIN;
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
insert into t1 (code, name) values (3, 'Jeremy'), (4, 'Matt');
select id, code, name from t1 order by id;
id	code	name
1	1	Tim
2	1	Monty
3	2	David
4	2	Erik
5	3	Sasha
6	3	Jeremy
7	4	Matt
COMMIT;
DROP TABLE t1;
unknown's avatar
unknown committed
1042 1043
create table t1 (n int(10), d int(10)) engine=innodb;
create table t2 (n int(10), d int(10)) engine=innodb;
1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055
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;
1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068
drop table if exists t1, t2;
CREATE TABLE t1 (a int, PRIMARY KEY (a));
CREATE TABLE t2 (a int, PRIMARY KEY (a)) ENGINE=InnoDB;
create trigger trg_del_t2 after  delete on t2 for each row
insert into t1 values (1);
insert into t1 values (1);
insert into t2 values (1),(2);
delete t2 from t2;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
select count(*) from t2 /* must be 2 as restored after rollback caused by the error */;
count(*)
2
drop table t1, t2;
1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081
drop table if exists t1, t2;
CREATE TABLE t1 (a int, PRIMARY KEY (a));
CREATE TABLE t2 (a int, PRIMARY KEY (a)) ENGINE=InnoDB;
create trigger trg_del_t2 after  delete on t2 for each row
insert into t1 values (1);
insert into t1 values (1);
insert into t2 values (1),(2);
delete t2 from t2;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
select count(*) from t2 /* must be 2 as restored after rollback caused by the error */;
count(*)
2
drop table t1, t2;
unknown's avatar
unknown committed
1082
create table t1 (a int, b int) engine=innodb;
1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098
insert into t1 values(20,null);
select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on
t2.b=t3.a;
b	ifnull(t2.b,"this is null")
NULL	this is null
select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on
t2.b=t3.a order by 1;
b	ifnull(t2.b,"this is null")
NULL	this is null
insert into t1 values(10,null);
select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on
t2.b=t3.a order by 1;
b	ifnull(t2.b,"this is null")
NULL	this is null
NULL	this is null
drop table t1;
unknown's avatar
unknown committed
1099 1100
create table t1 (a varchar(10) not null) engine=myisam;
create table t2 (b varchar(10) not null unique) engine=innodb;
1101 1102 1103
select t1.a from t1,t2 where t1.a=t2.b;
a
drop table t1,t2;
unknown's avatar
unknown committed
1104 1105
create table t1 (a int not null, b int, primary key (a)) engine = innodb;
create table t2 (a int not null, b int, primary key (a)) engine = innodb;
unknown's avatar
unknown committed
1106 1107 1108 1109
insert into t1 values (10, 20);
insert into t2 values (10, 20);
update t1, t2 set t1.b = 150, t2.b = t1.b where t2.a = t1.a and t1.a = 10;
drop table t1,t2;
unknown's avatar
unknown committed
1110 1111
CREATE TABLE t1 (id INT NOT NULL, PRIMARY KEY (id)) ENGINE=INNODB;
CREATE TABLE t2 (id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id), FOREIGN KEY (t1_id) REFERENCES t1(id)  ON DELETE CASCADE ) ENGINE=INNODB;
1112 1113 1114 1115 1116 1117 1118
insert into t1 set id=1;
insert into t2 set id=1, t1_id=1;
delete t1,t2 from t1,t2 where t1.id=t2.t1_id;
select * from t1;
id
select * from t2;
id	t1_id
unknown's avatar
unknown committed
1119
drop table t2,t1;
unknown's avatar
unknown committed
1120 1121
CREATE TABLE t1(id INT NOT NULL,  PRIMARY KEY (id)) ENGINE=INNODB;
CREATE TABLE t2(id  INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id)  ) ENGINE=INNODB;
1122 1123 1124 1125 1126 1127 1128 1129 1130
INSERT INTO t1 VALUES(1);
INSERT INTO t2 VALUES(1, 1);
SELECT * from t1;
id
1
UPDATE t1,t2 SET t1.id=t1.id+1, t2.t1_id=t1.id+1;
SELECT * from t1;
id
2
unknown's avatar
unknown committed
1131
UPDATE t1,t2 SET t1.id=t1.id+1 where t1.id!=t2.id;
1132 1133 1134
SELECT * from t1;
id
3
unknown's avatar
unknown committed
1135
DROP TABLE t1,t2;
unknown's avatar
unknown committed
1136
set autocommit=0;
unknown's avatar
unknown committed
1137 1138 1139
CREATE TABLE t1 (id CHAR(15) NOT NULL, value CHAR(40) NOT NULL, PRIMARY KEY(id)) ENGINE=InnoDB;
CREATE TABLE t2 (id CHAR(15) NOT NULL, value CHAR(40) NOT NULL, PRIMARY KEY(id)) ENGINE=InnoDB;
CREATE TABLE t3 (id1 CHAR(15) NOT NULL, id2 CHAR(15) NOT NULL, PRIMARY KEY(id1, id2)) ENGINE=InnoDB;
unknown's avatar
unknown committed
1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166
INSERT INTO t3 VALUES("my-test-1", "my-test-2");
COMMIT;
INSERT INTO t1 VALUES("this-key", "will disappear");
INSERT INTO t2 VALUES("this-key", "will also disappear");
DELETE FROM t3 WHERE id1="my-test-1";
SELECT * FROM t1;
id	value
this-key	will disappear
SELECT * FROM t2;
id	value
this-key	will also disappear
SELECT * FROM t3;
id1	id2
ROLLBACK;
SELECT * FROM t1;
id	value
SELECT * FROM t2;
id	value
SELECT * FROM t3;
id1	id2
my-test-1	my-test-2
SELECT * FROM t3 WHERE id1="my-test-1" LOCK IN SHARE MODE;
id1	id2
my-test-1	my-test-2
COMMIT;
set autocommit=1;
DROP TABLE t1,t2,t3;
unknown's avatar
unknown committed
1167
CREATE TABLE t1 (a int not null primary key, b int not null, unique (b)) engine=innodb;
1168 1169 1170 1171 1172
INSERT INTO t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
UPDATE t1 set a=a+100 where b between 2 and 3 and a < 1000;
SELECT * from t1;
a	b
1	1
1173 1174
102	2
103	3
1175 1176 1177 1178 1179 1180 1181
4	4
5	5
6	6
7	7
8	8
9	9
drop table t1;
unknown's avatar
unknown committed
1182 1183
CREATE TABLE t2 (   NEXT_T         BIGINT NOT NULL PRIMARY KEY) ENGINE=MyISAM;
CREATE TABLE t1 (  B_ID           INTEGER NOT NULL PRIMARY KEY) ENGINE=InnoDB;
1184 1185 1186 1187
SET AUTOCOMMIT=0;
INSERT INTO t1 ( B_ID ) VALUES ( 1 );
INSERT INTO t2 ( NEXT_T ) VALUES ( 1 );
ROLLBACK;
unknown's avatar
unknown committed
1188 1189
Warnings:
Warning	1196	Some non-transactional changed tables couldn't be rolled back
1190 1191 1192
SELECT * FROM t1;
B_ID
drop table  t1,t2;
unknown's avatar
unknown committed
1193
create table t1  ( pk         int primary key,    parent     int not null,    child      int not null,       index (parent)  ) engine = innodb;
unknown's avatar
unknown committed
1194 1195 1196 1197 1198 1199 1200
insert into t1 values   (1,0,4),  (2,1,3),  (3,2,1),  (4,1,2);
select distinct  parent,child   from t1   order by parent;
parent	child
0	4
1	2
1	3
2	1
unknown's avatar
unknown committed
1201
drop table t1;
unknown's avatar
unknown committed
1202
create table t1 (a int not null auto_increment primary key, b int, c int, key(c)) engine=innodb;
unknown's avatar
unknown committed
1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216
create table t2 (a int not null auto_increment primary key, b int);
insert into t1 (b) values (null),(null),(null),(null),(null),(null),(null);
insert into t2 (a) select b from t1;
insert into t1 (b) select b from t2;
insert into t2 (a) select b from t1;
insert into t1 (a) select b from t2;
insert into t2 (a) select b from t1;
insert into t1 (a) select b from t2;
insert into t2 (a) select b from t1;
insert into t1 (a) select b from t2;
insert into t2 (a) select b from t1;
insert into t1 (a) select b from t2;
select count(*) from t1;
count(*)
1217
623
unknown's avatar
unknown committed
1218
explain select * from t1 where c between 1 and 2500;
unknown's avatar
unknown committed
1219
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
unknown's avatar
unknown committed
1220
1	SIMPLE	t1	range	c	c	5	NULL	#	Using where
unknown's avatar
unknown committed
1221
update t1 set c=a;
unknown's avatar
unknown committed
1222
explain select * from t1 where c between 1 and 2500;
unknown's avatar
unknown committed
1223
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1224
1	SIMPLE	t1	ALL	c	NULL	NULL	NULL	#	Using where
unknown's avatar
unknown committed
1225
drop table t1,t2;
unknown's avatar
unknown committed
1226
create table t1 (id int primary key auto_increment, fk int, index index_fk (fk)) engine=innodb;
unknown's avatar
unknown committed
1227 1228 1229 1230 1231 1232 1233 1234
insert into t1 (id) values (null),(null),(null),(null),(null);
update t1 set fk=69 where fk is null order by id limit 1;
SELECT * from t1;
id	fk
2	NULL
3	NULL
4	NULL
5	NULL
1235
1	69
unknown's avatar
unknown committed
1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257
drop table t1;
create table t1 (a int not null, b int not null, key (a));
insert into t1 values (1,1),(1,2),(1,3),(3,1),(3,2),(3,3),(3,1),(3,2),(3,3),(2,1),(2,2),(2,3);
SET @tmp=0;
update t1 set b=(@tmp:=@tmp+1) order by a;
update t1 set b=99 where a=1 order by b asc limit 1;
update t1 set b=100 where a=1 order by b desc limit 2;
update t1 set a=a+10+b where a=1 order by b;
select * from t1 order by a,b;
a	b
2	4
2	5
2	6
3	7
3	8
3	9
3	10
3	11
3	12
13	2
111	100
111	100
unknown's avatar
unknown committed
1258
drop table t1;
unknown's avatar
unknown committed
1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276
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 (c char(8) not null, b char(8) not null, a char(8) not null, primary key(a,b,c)) engine=innodb;
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;
SET AUTOCOMMIT=1;
create table t1 (a integer auto_increment primary key) engine=innodb;
insert into t1 (a) values (NULL),(NULL);
truncate table t1;
insert into t1 (a) values (NULL),(NULL);
SELECT * from t1;
a
unknown's avatar
unknown committed
1277 1278
1
2
unknown's avatar
unknown committed
1279
drop table t1;
unknown's avatar
unknown committed
1280 1281
CREATE TABLE t1 (`id 1` INT NOT NULL, PRIMARY KEY (`id 1`)) ENGINE=INNODB;
CREATE TABLE t2 (id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id), FOREIGN KEY (`t1_id`) REFERENCES `t1`(`id 1`)  ON DELETE CASCADE ) ENGINE=INNODB;
unknown's avatar
unknown committed
1282
drop table t2,t1;
unknown's avatar
unknown committed
1283
create table `t1` (`id` int( 11 ) not null  ,primary key ( `id` )) engine = innodb;
1284
insert into `t1`values ( 1 ) ;
unknown's avatar
unknown committed
1285
create table `t2` (`id` int( 11 ) not null default '0',unique key `id` ( `id` ) ,constraint `t1_id_fk` foreign key ( `id` ) references `t1` (`id` )) engine = innodb;
1286
insert into `t2`values ( 1 ) ;
unknown's avatar
unknown committed
1287
create table `t3` (`id` int( 11 ) not null default '0',key `id` ( `id` ) ,constraint `t2_id_fk` foreign key ( `id` ) references `t2` (`id` )) engine = innodb;
1288 1289
insert into `t3`values ( 1 ) ;
delete t3,t2,t1 from t1,t2,t3 where t1.id =1 and t2.id = t1.id and t3.id = t2.id;
unknown's avatar
unknown committed
1290
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`))
1291
update t1,t2,t3 set t3.id=5, t2.id=6, t1.id=7  where t1.id =1 and t2.id = t1.id and t3.id = t2.id;
unknown's avatar
unknown committed
1292
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`))
1293
update t3 set  t3.id=7  where t1.id =1 and t2.id = t1.id and t3.id = t2.id;
unknown's avatar
unknown committed
1294
ERROR 42S22: Unknown column 't1.id' in 'where clause'
1295
drop table t3,t2,t1;
1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307
CREATE TABLE t1 (
c1 VARCHAR(8), c2 VARCHAR(8),
PRIMARY KEY (c1, c2)
) ENGINE=InnoDB;
CREATE TABLE t2 (
c0 INT PRIMARY KEY,
c1 VARCHAR(8) UNIQUE,
FOREIGN KEY (c1) REFERENCES t1 (c1) ON UPDATE CASCADE
) ENGINE=InnoDB;
INSERT INTO t1 VALUES ('old', 'somevalu'), ('other', 'anyvalue');
INSERT INTO t2 VALUES (10, 'old'), (20, 'other');
UPDATE t1 SET c1 = 'other' WHERE c1 = 'old';
1308
ERROR 23000: Upholding foreign key constraints for table 't1', entry 'other-somevalu', key 2 would lead to a duplicate entry
1309
DROP TABLE t2,t1;
unknown's avatar
unknown committed
1310 1311 1312 1313 1314 1315 1316 1317
create table t1(
id int primary key,
pid int,
index(pid),
foreign key(pid) references t1(id) on delete cascade) engine=innodb;
insert into t1 values(0,0),(1,0),(2,1),(3,2),(4,3),(5,4),(6,5),(7,6),
(8,7),(9,8),(10,9),(11,10),(12,11),(13,12),(14,13),(15,14);
delete from t1 where id=0;
unknown's avatar
unknown committed
1318
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t1`, CONSTRAINT `t1_ibfk_1` FOREIGN KEY (`pid`) REFERENCES `t1` (`id`) ON DELETE CASCADE)
unknown's avatar
unknown committed
1319 1320 1321
delete from t1 where id=15;
delete from t1 where id=0;
drop table t1;
unknown's avatar
unknown committed
1322
CREATE TABLE t1 (col1 int(1))ENGINE=InnoDB;
1323
CREATE TABLE t2 (col1 int(1),stamp TIMESTAMP,INDEX stamp_idx
unknown's avatar
unknown committed
1324
(stamp))ENGINE=InnoDB;
unknown's avatar
unknown committed
1325
insert into t1 values (1),(2),(3);
unknown's avatar
unknown committed
1326 1327
insert into t2 values (1, 20020204130000),(2, 20020204130000),(4,20020204310000 ),(5,20020204230000);
Warnings:
unknown's avatar
unknown committed
1328
Warning	1265	Data truncated for column 'stamp' at row 3
unknown's avatar
unknown committed
1329 1330 1331 1332 1333 1334
SELECT col1 FROM t1 UNION SELECT col1 FROM t2 WHERE stamp <
'20020204120000' GROUP BY col1;
col1
1
2
3
unknown's avatar
unknown committed
1335
4
unknown's avatar
unknown committed
1336
drop table t1,t2;
1337 1338 1339 1340
CREATE TABLE t1 (
`id` int(10) unsigned NOT NULL auto_increment,
`id_object` int(10) unsigned default '0',
`id_version` int(10) unsigned NOT NULL default '1',
unknown's avatar
unknown committed
1341
`label` varchar(100) NOT NULL default '',
1342 1343 1344 1345
`description` text,
PRIMARY KEY  (`id`),
KEY `id_object` (`id_object`),
KEY `id_version` (`id_version`)
unknown's avatar
unknown committed
1346
) ENGINE=InnoDB;
1347 1348 1349 1350 1351 1352
INSERT INTO t1 VALUES("6", "3382", "9", "Test", NULL), ("7", "102", "5", "Le Pekin (Test)", NULL),("584", "1794", "4", "Test de resto", NULL),("837", "1822", "6", "Test 3", NULL),("1119", "3524", "1", "Societe Test", NULL),("1122", "3525", "1", "Fournisseur Test", NULL);
CREATE TABLE t2 (
`id` int(10) unsigned NOT NULL auto_increment,
`id_version` int(10) unsigned NOT NULL default '1',
PRIMARY KEY  (`id`),
KEY `id_version` (`id_version`)
unknown's avatar
unknown committed
1353
) ENGINE=InnoDB;
1354
INSERT INTO t2 VALUES("3524", "1"),("3525", "1"),("1794", "4"),("102", "5"),("1822", "6"),("3382", "9");
unknown's avatar
unknown committed
1355 1356
SELECT t2.id, t1.`label` FROM t2 INNER JOIN
(SELECT t1.id_object as id_object FROM t1 WHERE t1.`label` LIKE '%test%') AS lbl 
1357 1358
ON (t2.id = lbl.id_object) INNER JOIN t1 ON (t2.id = t1.id_object);
id	label
unknown's avatar
unknown committed
1359 1360 1361 1362 1363
3382	Test
102	Le Pekin (Test)
1794	Test de resto
1822	Test 3
3524	Societe Test
1364 1365
3525	Fournisseur Test
drop table t1,t2;
unknown's avatar
unknown committed
1366 1367 1368
create table t1 (a int, b varchar(200), c text not null) checksum=1 engine=myisam;
create table t2 (a int, b varchar(200), c text not null) checksum=0 engine=innodb;
create table t3 (a int, b varchar(200), c text not null) checksum=1 engine=innodb;
1369 1370 1371 1372 1373
insert t1 values (1, "aaa", "bbb"), (NULL, "", "ccccc"), (0, NULL, "");
insert t2 select * from t1;
insert t3 select * from t1;
checksum table t1, t2, t3, t4 quick;
Table	Checksum
1374
test.t1	2948697075
1375 1376 1377
test.t2	NULL
test.t3	NULL
test.t4	NULL
1378 1379
Warnings:
Error	1146	Table 'test.t4' doesn't exist
unknown's avatar
unknown committed
1380
checksum table t1, t2, t3, t4;
1381
Table	Checksum
1382
test.t1	2948697075
1383 1384
test.t2	2948697075
test.t3	2948697075
unknown's avatar
unknown committed
1385 1386 1387 1388
test.t4	NULL
Warnings:
Error	1146	Table 'test.t4' doesn't exist
checksum table t1, t2, t3, t4 extended;
1389
Table	Checksum
1390 1391 1392
test.t1	2948697075
test.t2	2948697075
test.t3	2948697075
unknown's avatar
unknown committed
1393 1394 1395
test.t4	NULL
Warnings:
Error	1146	Table 'test.t4' doesn't exist
1396
drop table t1,t2,t3;
1397 1398
create table t1 (id int,  name char(10) not null,  name2 char(10) not null) engine=innodb;
insert into t1 values(1,'first','fff'),(2,'second','sss'),(3,'third','ttt');
1399 1400
select trim(name2) from t1  union all  select trim(name) from t1 union all select trim(id) from t1;
trim(name2)
1401 1402 1403 1404 1405 1406 1407 1408 1409 1410
fff
sss
ttt
first
second
third
1
2
3
drop table t1;
1411 1412 1413
create table t1 (a int) engine=innodb;
create table t2 like t1;
drop table t1,t2;
1414 1415 1416 1417 1418
create table t1 (id int(11) not null, id2 int(11) not null, unique (id,id2)) engine=innodb;
create table t2 (id int(11) not null, constraint t1_id_fk foreign key ( id ) references t1 (id)) engine = innodb;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
unknown's avatar
unknown committed
1419 1420
  `id` int(11) NOT NULL,
  `id2` int(11) NOT NULL,
1421 1422 1423 1424 1425
  UNIQUE KEY `id` (`id`,`id2`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
unknown's avatar
unknown committed
1426
  `id` int(11) NOT NULL,
1427 1428 1429 1430 1431 1432 1433
  KEY `t1_id_fk` (`id`),
  CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
create index id on t2 (id);
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
unknown's avatar
unknown committed
1434
  `id` int(11) NOT NULL,
1435 1436 1437 1438 1439 1440 1441
  KEY `id` (`id`),
  CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
create index id2 on t2 (id);
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
unknown's avatar
unknown committed
1442
  `id` int(11) NOT NULL,
1443 1444 1445 1446 1447 1448 1449 1450 1451 1452
  KEY `id` (`id`),
  KEY `id2` (`id`),
  CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop index id2 on t2;
drop index id on t2;
Got one of the listed errors
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
unknown's avatar
unknown committed
1453
  `id` int(11) NOT NULL,
1454 1455 1456 1457 1458 1459 1460 1461
  KEY `id` (`id`),
  CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t2;
create table t2 (id int(11) not null, id2 int(11) not null, constraint t1_id_fk foreign key (id,id2) references t1 (id,id2)) engine = innodb;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
unknown's avatar
unknown committed
1462 1463
  `id` int(11) NOT NULL,
  `id2` int(11) NOT NULL,
1464 1465 1466 1467 1468 1469 1470
  KEY `t1_id_fk` (`id`,`id2`),
  CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`, `id2`) REFERENCES `t1` (`id`, `id2`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
create unique index id on t2 (id,id2);
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
unknown's avatar
unknown committed
1471 1472
  `id` int(11) NOT NULL,
  `id2` int(11) NOT NULL,
1473 1474 1475 1476 1477 1478 1479 1480
  UNIQUE KEY `id` (`id`,`id2`),
  CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`, `id2`) REFERENCES `t1` (`id`, `id2`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t2;
create table t2 (id int(11) not null, id2 int(11) not null, unique (id,id2),constraint t1_id_fk foreign key (id2,id) references t1 (id,id2)) engine = innodb;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
unknown's avatar
unknown committed
1481 1482
  `id` int(11) NOT NULL,
  `id2` int(11) NOT NULL,
1483 1484 1485 1486 1487 1488 1489 1490 1491
  UNIQUE KEY `id` (`id`,`id2`),
  KEY `t1_id_fk` (`id2`,`id`),
  CONSTRAINT `t1_id_fk` FOREIGN KEY (`id2`, `id`) REFERENCES `t1` (`id`, `id2`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t2;
create table t2 (id int(11) not null, id2 int(11) not null, unique (id,id2), constraint t1_id_fk foreign key (id) references t1 (id)) engine = innodb;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
unknown's avatar
unknown committed
1492 1493
  `id` int(11) NOT NULL,
  `id2` int(11) NOT NULL,
1494 1495 1496 1497 1498 1499 1500 1501
  UNIQUE KEY `id` (`id`,`id2`),
  CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t2;
create table t2 (id int(11) not null, id2 int(11) not null, unique (id,id2),constraint t1_id_fk foreign key (id2,id) references t1 (id,id2)) engine = innodb;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
unknown's avatar
unknown committed
1502 1503
  `id` int(11) NOT NULL,
  `id2` int(11) NOT NULL,
1504 1505 1506 1507 1508
  UNIQUE KEY `id` (`id`,`id2`),
  KEY `t1_id_fk` (`id2`,`id`),
  CONSTRAINT `t1_id_fk` FOREIGN KEY (`id2`, `id`) REFERENCES `t1` (`id`, `id2`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t2;
1509 1510 1511 1512
create table t2 (id int(11) not null auto_increment, id2 int(11) not null, constraint t1_id_fk foreign key (id) references t1 (id), primary key (id), index (id,id2)) engine = innodb;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
unknown's avatar
unknown committed
1513
  `id` int(11) NOT NULL AUTO_INCREMENT,
unknown's avatar
unknown committed
1514
  `id2` int(11) NOT NULL,
unknown's avatar
unknown committed
1515
  PRIMARY KEY (`id`),
1516 1517 1518 1519 1520 1521 1522 1523
  KEY `id` (`id`,`id2`),
  CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t2;
create table t2 (id int(11) not null auto_increment, id2 int(11) not null, constraint t1_id_fk foreign key (id) references t1 (id)) engine= innodb;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
unknown's avatar
unknown committed
1524
  `id` int(11) NOT NULL AUTO_INCREMENT,
unknown's avatar
unknown committed
1525
  `id2` int(11) NOT NULL,
1526 1527 1528 1529 1530 1531 1532
  KEY `t1_id_fk` (`id`),
  CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
alter table t2 add index id_test (id), add index id_test2 (id,id2);
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
unknown's avatar
unknown committed
1533
  `id` int(11) NOT NULL AUTO_INCREMENT,
unknown's avatar
unknown committed
1534
  `id2` int(11) NOT NULL,
1535 1536 1537 1538 1539
  KEY `id_test` (`id`),
  KEY `id_test2` (`id`,`id2`),
  CONSTRAINT `t1_id_fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t2;
1540
create table t2 (id int(11) not null, id2 int(11) not null, constraint t1_id_fk foreign key (id2,id) references t1 (id)) engine = innodb;
1541
ERROR 42000: Incorrect foreign key definition for 't1_id_fk': Key reference and table reference don't match
1542 1543 1544 1545
create table t2 (a int auto_increment primary key, b int, index(b), foreign key (b) references t1(id), unique(b)) engine=innodb;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
unknown's avatar
unknown committed
1546 1547 1548
  `a` int(11) NOT NULL AUTO_INCREMENT,
  `b` int(11) DEFAULT NULL,
  PRIMARY KEY (`a`),
1549 1550 1551 1552 1553 1554 1555 1556 1557
  UNIQUE KEY `b_2` (`b`),
  KEY `b` (`b`),
  CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`b`) REFERENCES `t1` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t2;
create table t2 (a int auto_increment primary key, b int, foreign key (b) references t1(id), foreign key (b) references t1(id), unique(b)) engine=innodb;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
unknown's avatar
unknown committed
1558 1559 1560
  `a` int(11) NOT NULL AUTO_INCREMENT,
  `b` int(11) DEFAULT NULL,
  PRIMARY KEY (`a`),
1561 1562 1563 1564 1565
  UNIQUE KEY `b` (`b`),
  CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`b`) REFERENCES `t1` (`id`),
  CONSTRAINT `t2_ibfk_2` FOREIGN KEY (`b`) REFERENCES `t1` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t2, t1;
1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583
create table t1 (c char(10), index (c,c)) engine=innodb;
ERROR 42S21: Duplicate column name 'c'
create table t1 (c1 char(10), c2 char(10), index (c1,c2,c1)) engine=innodb;
ERROR 42S21: Duplicate column name 'c1'
create table t1 (c1 char(10), c2 char(10), index (c1,c1,c2)) engine=innodb;
ERROR 42S21: Duplicate column name 'c1'
create table t1 (c1 char(10), c2 char(10), index (c2,c1,c1)) engine=innodb;
ERROR 42S21: Duplicate column name 'c1'
create table t1 (c1 char(10), c2 char(10)) engine=innodb;
alter table t1 add key (c1,c1);
ERROR 42S21: Duplicate column name 'c1'
alter table t1 add key (c2,c1,c1);
ERROR 42S21: Duplicate column name 'c1'
alter table t1 add key (c1,c2,c1);
ERROR 42S21: Duplicate column name 'c1'
alter table t1 add key (c1,c1,c2);
ERROR 42S21: Duplicate column name 'c1'
drop table t1;
1584 1585 1586 1587 1588 1589
create table t1(a int(1) , b int(1)) engine=innodb;
insert into t1 values ('1111', '3333');
select distinct concat(a, b) from t1;
concat(a, b)
11113333
drop table t1;
1590 1591
CREATE TABLE t1 ( a char(10) ) ENGINE=InnoDB;
SELECT a FROM t1 WHERE MATCH (a) AGAINST ('test' IN BOOLEAN MODE);
unknown's avatar
unknown committed
1592
ERROR HY000: The used table type doesn't support FULLTEXT indexes
unknown's avatar
unknown committed
1593
DROP TABLE t1;
1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605
CREATE TABLE t1 (a_id tinyint(4) NOT NULL default '0', PRIMARY KEY  (a_id)) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO t1 VALUES (1),(2),(3);
CREATE TABLE t2 (b_id tinyint(4) NOT NULL default '0',b_a tinyint(4) NOT NULL default '0', PRIMARY KEY  (b_id), KEY  (b_a), 
CONSTRAINT fk_b_a FOREIGN KEY (b_a) REFERENCES t1 (a_id) ON DELETE CASCADE ON UPDATE NO ACTION) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO t2 VALUES (1,1),(2,1),(3,1),(4,2),(5,2);
SELECT * FROM (SELECT t1.*,GROUP_CONCAT(t2.b_id SEPARATOR ',') as b_list FROM (t1 LEFT JOIN (t2) on t1.a_id = t2.b_a) GROUP BY t1.a_id ) AS xyz;
a_id	b_list
1	1,2,3
2	4,5
3	NULL
DROP TABLE t2;
DROP TABLE t1;
1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621
create temporary table t1 (a int) engine=innodb;
insert into t1 values (4711);
truncate t1;
insert into t1 values (42);
select * from t1;
a
42
drop table t1;
create table t1 (a int) engine=innodb;
insert into t1 values (4711);
truncate t1;
insert into t1 values (42);
select * from t1;
a
42
drop table t1;
unknown's avatar
unknown committed
1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632
create table t1 (a int not null, b int not null, c blob not null, d int not null, e int, primary key (a,b,c(255),d)) engine=innodb;
insert into t1 values (2,2,"b",2,2),(1,1,"a",1,1),(3,3,"ab",3,3);
select * from t1 order by a,b,c,d;
a	b	c	d	e
1	1	a	1	1
2	2	b	2	2
3	3	ab	3	3
explain select * from t1 order by a,b,c,d;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	3	Using filesort
drop table t1;
1633 1634 1635 1636 1637 1638 1639 1640 1641
create table t1 (a char(1), b char(1), key(a, b)) engine=innodb;
insert into t1 values ('8', '6'), ('4', '7');
select min(a) from t1;
min(a)
4
select min(b) from t1 where a='8';
min(b)
6
drop table t1;
1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664
create table t1 (x bigint unsigned not null primary key) engine=innodb;
insert into t1(x) values (0xfffffffffffffff0),(0xfffffffffffffff1);
select * from t1;
x
18446744073709551600
18446744073709551601
select count(*) from t1 where x>0;
count(*)
2
select count(*) from t1 where x=0;
count(*)
0
select count(*) from t1 where x<0;
count(*)
0
select count(*) from t1 where x < -16;
count(*)
0
select count(*) from t1 where x = -16;
count(*)
0
explain select count(*) from t1 where x > -16;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
unknown's avatar
unknown committed
1665
1	SIMPLE	t1	index	PRIMARY	PRIMARY	8	NULL	2	Using where; Using index
1666 1667
select count(*) from t1 where x > -16;
count(*)
unknown's avatar
unknown committed
1668
2
1669 1670
select * from t1 where x > -16;
x
unknown's avatar
unknown committed
1671
18446744073709551600
1672 1673 1674 1675 1676
18446744073709551601
select count(*) from t1 where x = 18446744073709551601;
count(*)
1
drop table t1;
1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687
SELECT variable_value FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_buffer_pool_pages_total';
variable_value
512
SELECT variable_value FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_page_size';
variable_value
16384
SELECT variable_value - @innodb_rows_deleted_orig FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_rows_deleted';
variable_value - @innodb_rows_deleted_orig
71
SELECT variable_value - @innodb_rows_inserted_orig FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_rows_inserted';
variable_value - @innodb_rows_inserted_orig
1688
1067
1689 1690
SELECT variable_value - @innodb_rows_updated_orig FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_rows_updated';
variable_value - @innodb_rows_updated_orig
1691
865
1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706
SELECT variable_value - @innodb_row_lock_waits_orig FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_row_lock_waits';
variable_value - @innodb_row_lock_waits_orig
0
SELECT variable_value - @innodb_row_lock_current_waits_orig FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_row_lock_current_waits';
variable_value - @innodb_row_lock_current_waits_orig
0
SELECT variable_value - @innodb_row_lock_time_orig FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_row_lock_time';
variable_value - @innodb_row_lock_time_orig
0
SELECT variable_value - @innodb_row_lock_time_max_orig FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_row_lock_time_max';
variable_value - @innodb_row_lock_time_max_orig
0
SELECT variable_value - @innodb_row_lock_time_avg_orig FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_row_lock_time_avg';
variable_value - @innodb_row_lock_time_avg_orig
0
1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721
show variables like "innodb_sync_spin_loops";
Variable_name	Value
innodb_sync_spin_loops	20
set global innodb_sync_spin_loops=1000;
show variables like "innodb_sync_spin_loops";
Variable_name	Value
innodb_sync_spin_loops	1000
set global innodb_sync_spin_loops=0;
show variables like "innodb_sync_spin_loops";
Variable_name	Value
innodb_sync_spin_loops	0
set global innodb_sync_spin_loops=20;
show variables like "innodb_sync_spin_loops";
Variable_name	Value
innodb_sync_spin_loops	20
1722
SET @old_innodb_thread_concurrency= @@global.innodb_thread_concurrency;
unknown's avatar
unknown committed
1723 1724
show variables like "innodb_thread_concurrency";
Variable_name	Value
unknown's avatar
unknown committed
1725
innodb_thread_concurrency	8
unknown's avatar
unknown committed
1726
set global innodb_thread_concurrency=1001;
1727
Warnings:
1728
Warning	1292	Truncated incorrect thread_concurrency value: '1001'
unknown's avatar
unknown committed
1729 1730 1731 1732 1733 1734
show variables like "innodb_thread_concurrency";
Variable_name	Value
innodb_thread_concurrency	1000
set global innodb_thread_concurrency=0;
show variables like "innodb_thread_concurrency";
Variable_name	Value
1735
innodb_thread_concurrency	0
unknown's avatar
unknown committed
1736 1737 1738 1739
set global innodb_thread_concurrency=16;
show variables like "innodb_thread_concurrency";
Variable_name	Value
innodb_thread_concurrency	16
1740
SET @@global.innodb_thread_concurrency= @old_innodb_thread_concurrency;
unknown's avatar
unknown committed
1741
show variables like "innodb_concurrency_tickets";
unknown's avatar
unknown committed
1742
Variable_name	Value
unknown's avatar
unknown committed
1743 1744 1745
innodb_concurrency_tickets	500
set global innodb_concurrency_tickets=1000;
show variables like "innodb_concurrency_tickets";
unknown's avatar
unknown committed
1746
Variable_name	Value
unknown's avatar
unknown committed
1747 1748
innodb_concurrency_tickets	1000
set global innodb_concurrency_tickets=0;
1749
Warnings:
1750
Warning	1292	Truncated incorrect concurrency_tickets value: '0'
unknown's avatar
unknown committed
1751
show variables like "innodb_concurrency_tickets";
unknown's avatar
unknown committed
1752
Variable_name	Value
unknown's avatar
unknown committed
1753 1754 1755
innodb_concurrency_tickets	1
set global innodb_concurrency_tickets=500;
show variables like "innodb_concurrency_tickets";
unknown's avatar
unknown committed
1756
Variable_name	Value
unknown's avatar
unknown committed
1757
innodb_concurrency_tickets	500
unknown's avatar
unknown committed
1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772
show variables like "innodb_thread_sleep_delay";
Variable_name	Value
innodb_thread_sleep_delay	10000
set global innodb_thread_sleep_delay=100000;
show variables like "innodb_thread_sleep_delay";
Variable_name	Value
innodb_thread_sleep_delay	100000
set global innodb_thread_sleep_delay=0;
show variables like "innodb_thread_sleep_delay";
Variable_name	Value
innodb_thread_sleep_delay	0
set global innodb_thread_sleep_delay=10000;
show variables like "innodb_thread_sleep_delay";
Variable_name	Value
innodb_thread_sleep_delay	10000
1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789
set storage_engine=INNODB;
drop table if exists t1,t2,t3;
--- Testing varchar ---
--- Testing varchar ---
create table t1 (v varchar(10), c char(10), t text);
insert into t1 values('+ ', '+ ', '+ ');
set @a=repeat(' ',20);
insert into t1 values (concat('+',@a),concat('+',@a),concat('+',@a));
Warnings:
Note	1265	Data truncated for column 'v' at row 1
select concat('*',v,'*',c,'*',t,'*') from t1;
concat('*',v,'*',c,'*',t,'*')
*+ *+*+ *
*+         *+*+                    *
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
unknown's avatar
unknown committed
1790 1791
  `v` varchar(10) DEFAULT NULL,
  `c` char(10) DEFAULT NULL,
1792 1793 1794 1795 1796 1797
  `t` text
) ENGINE=InnoDB DEFAULT CHARSET=latin1
create table t2 like t1;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
unknown's avatar
unknown committed
1798 1799
  `v` varchar(10) DEFAULT NULL,
  `c` char(10) DEFAULT NULL,
1800 1801 1802 1803 1804 1805
  `t` text
) ENGINE=InnoDB DEFAULT CHARSET=latin1
create table t3 select * from t1;
show create table t3;
Table	Create Table
t3	CREATE TABLE `t3` (
unknown's avatar
unknown committed
1806 1807
  `v` varchar(10) DEFAULT NULL,
  `c` char(10) DEFAULT NULL,
1808 1809 1810 1811 1812 1813
  `t` text
) ENGINE=InnoDB DEFAULT CHARSET=latin1
alter table t1 modify c varchar(10);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
unknown's avatar
unknown committed
1814 1815
  `v` varchar(10) DEFAULT NULL,
  `c` varchar(10) DEFAULT NULL,
1816 1817 1818 1819 1820 1821
  `t` text
) ENGINE=InnoDB DEFAULT CHARSET=latin1
alter table t1 modify v char(10);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
unknown's avatar
unknown committed
1822 1823
  `v` char(10) DEFAULT NULL,
  `c` varchar(10) DEFAULT NULL,
1824 1825 1826 1827 1828 1829 1830 1831
  `t` text
) ENGINE=InnoDB DEFAULT CHARSET=latin1
alter table t1 modify t varchar(10);
Warnings:
Note	1265	Data truncated for column 't' at row 2
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
unknown's avatar
unknown committed
1832 1833 1834
  `v` char(10) DEFAULT NULL,
  `c` varchar(10) DEFAULT NULL,
  `t` varchar(10) DEFAULT NULL
1835 1836 1837 1838 1839 1840 1841 1842 1843 1844
) ENGINE=InnoDB DEFAULT CHARSET=latin1
select concat('*',v,'*',c,'*',t,'*') from t1;
concat('*',v,'*',c,'*',t,'*')
*+*+*+ *
*+*+*+         *
drop table t1,t2,t3;
create table t1 (v varchar(10), c char(10), t text, key(v), key(c), key(t(10)));
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
unknown's avatar
unknown committed
1845 1846
  `v` varchar(10) DEFAULT NULL,
  `c` char(10) DEFAULT NULL,
1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899
  `t` text,
  KEY `v` (`v`),
  KEY `c` (`c`),
  KEY `t` (`t`(10))
) ENGINE=InnoDB DEFAULT CHARSET=latin1
select count(*) from t1;
count(*)
270
insert into t1 values(concat('a',char(1)),concat('a',char(1)),concat('a',char(1)));
select count(*) from t1 where v='a';
count(*)
10
select count(*) from t1 where c='a';
count(*)
10
select count(*) from t1 where t='a';
count(*)
10
select count(*) from t1 where v='a  ';
count(*)
10
select count(*) from t1 where c='a  ';
count(*)
10
select count(*) from t1 where t='a  ';
count(*)
10
select count(*) from t1 where v between 'a' and 'a ';
count(*)
10
select count(*) from t1 where v between 'a' and 'a ' and v between 'a  ' and 'b\n';
count(*)
10
select count(*) from t1 where v like 'a%';
count(*)
11
select count(*) from t1 where c like 'a%';
count(*)
11
select count(*) from t1 where t like 'a%';
count(*)
11
select count(*) from t1 where v like 'a %';
count(*)
9
explain select count(*) from t1 where v='a  ';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	v	v	13	const	#	Using where; Using index
explain select count(*) from t1 where c='a  ';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	c	c	11	const	#	Using where; Using index
explain select count(*) from t1 where t='a  ';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1900
1	SIMPLE	t1	ref	t	t	13	const	#	Using where
1901 1902 1903 1904 1905
explain select count(*) from t1 where v like 'a%';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	v	v	13	NULL	#	Using where; Using index
explain select count(*) from t1 where v between 'a' and 'a ';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1906
1	SIMPLE	t1	ref	v	v	13	const	#	Using where; Using index
1907 1908
explain select count(*) from t1 where v between 'a' and 'a ' and v between 'a  ' and 'b\n';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1909
1	SIMPLE	t1	ref	v	v	13	const	#	Using where; Using index
1910
alter table t1 add unique(v);
unknown's avatar
unknown committed
1911
ERROR 23000: Duplicate entry '{ ' for key 'v_2'
1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978
alter table t1 add key(v);
select concat('*',v,'*',c,'*',t,'*') as qq from t1 where v='a';
qq
*a*a*a*
*a *a*a *
*a  *a*a  *
*a   *a*a   *
*a    *a*a    *
*a     *a*a     *
*a      *a*a      *
*a       *a*a       *
*a        *a*a        *
*a         *a*a         *
explain select * from t1 where v='a';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	v,v_2	#	13	const	#	Using where
select v,count(*) from t1 group by v limit 10;
v	count(*)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
select v,count(t) from t1 group by v limit 10;
v	count(t)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
select v,count(c) from t1 group by v limit 10;
v	count(c)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
select sql_big_result v,count(t) from t1 group by v limit 10;
v	count(t)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
select sql_big_result v,count(c) from t1 group by v limit 10;
v	count(c)
a	1
1979 1980 1981 1982 1983 1984 1985
a 	10
b     	10
c    	10
d   	10
e  	10
f     	10
g    	10
1986
h	10
1987
i     	10
1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063
select c,count(*) from t1 group by c limit 10;
c	count(*)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
select c,count(t) from t1 group by c limit 10;
c	count(t)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
select sql_big_result c,count(t) from t1 group by c limit 10;
c	count(t)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
select t,count(*) from t1 group by t limit 10;
t	count(*)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
select t,count(t) from t1 group by t limit 10;
t	count(t)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
select sql_big_result t,count(t) from t1 group by t limit 10;
t	count(t)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
alter table t1 modify v varchar(300), drop key v, drop key v_2, add key v (v);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
unknown's avatar
unknown committed
2064 2065
  `v` varchar(300) DEFAULT NULL,
  `c` char(10) DEFAULT NULL,
2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096
  `t` text,
  KEY `c` (`c`),
  KEY `t` (`t`(10)),
  KEY `v` (`v`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
select count(*) from t1 where v='a';
count(*)
10
select count(*) from t1 where v='a  ';
count(*)
10
select count(*) from t1 where v between 'a' and 'a ';
count(*)
10
select count(*) from t1 where v between 'a' and 'a ' and v between 'a  ' and 'b\n';
count(*)
10
select count(*) from t1 where v like 'a%';
count(*)
11
select count(*) from t1 where v like 'a %';
count(*)
9
explain select count(*) from t1 where v='a  ';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	v	v	303	const	#	Using where; Using index
explain select count(*) from t1 where v like 'a%';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	v	v	303	NULL	#	Using where; Using index
explain select count(*) from t1 where v between 'a' and 'a ';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
2097
1	SIMPLE	t1	ref	v	v	303	const	#	Using where; Using index
2098 2099
explain select count(*) from t1 where v between 'a' and 'a ' and v between 'a  ' and 'b\n';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
2100
1	SIMPLE	t1	ref	v	v	303	const	#	Using where; Using index
2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143
explain select * from t1 where v='a';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	v	v	303	const	#	Using where
select v,count(*) from t1 group by v limit 10;
v	count(*)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
select v,count(t) from t1 group by v limit 10;
v	count(t)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
select sql_big_result v,count(t) from t1 group by v limit 10;
v	count(t)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
alter table t1 drop key v, add key v (v(30));
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
unknown's avatar
unknown committed
2144 2145
  `v` varchar(300) DEFAULT NULL,
  `c` char(10) DEFAULT NULL,
2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176
  `t` text,
  KEY `c` (`c`),
  KEY `t` (`t`(10)),
  KEY `v` (`v`(30))
) ENGINE=InnoDB DEFAULT CHARSET=latin1
select count(*) from t1 where v='a';
count(*)
10
select count(*) from t1 where v='a  ';
count(*)
10
select count(*) from t1 where v between 'a' and 'a ';
count(*)
10
select count(*) from t1 where v between 'a' and 'a ' and v between 'a  ' and 'b\n';
count(*)
10
select count(*) from t1 where v like 'a%';
count(*)
11
select count(*) from t1 where v like 'a %';
count(*)
9
explain select count(*) from t1 where v='a  ';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	v	v	33	const	#	Using where
explain select count(*) from t1 where v like 'a%';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	v	v	33	NULL	#	Using where
explain select count(*) from t1 where v between 'a' and 'a ';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
2177
1	SIMPLE	t1	ref	v	v	33	const	#	Using where
2178 2179
explain select count(*) from t1 where v between 'a' and 'a ' and v between 'a  ' and 'b\n';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
2180
1	SIMPLE	t1	ref	v	v	33	const	#	Using where
2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223
explain select * from t1 where v='a';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	v	v	33	const	#	Using where
select v,count(*) from t1 group by v limit 10;
v	count(*)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
select v,count(t) from t1 group by v limit 10;
v	count(t)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
select sql_big_result v,count(t) from t1 group by v limit 10;
v	count(t)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
alter table t1 modify v varchar(600), drop key v, add key v (v);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
unknown's avatar
unknown committed
2224 2225
  `v` varchar(600) DEFAULT NULL,
  `c` char(10) DEFAULT NULL,
2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270
  `t` text,
  KEY `c` (`c`),
  KEY `t` (`t`(10)),
  KEY `v` (`v`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
select v,count(*) from t1 group by v limit 10;
v	count(*)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
select v,count(t) from t1 group by v limit 10;
v	count(t)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
select sql_big_result v,count(t) from t1 group by v limit 10;
v	count(t)
a	1
a	10
b	10
c	10
d	10
e	10
f	10
g	10
h	10
i	10
drop table t1;
create table t1 (a char(10), unique (a));
insert into t1 values ('a   ');
insert into t1 values ('a ');
unknown's avatar
unknown committed
2271
ERROR 23000: Duplicate entry 'a' for key 'a'
2272 2273
alter table t1 modify a varchar(10);
insert into t1 values ('a '),('a  '),('a   '),('a         ');
unknown's avatar
unknown committed
2274
ERROR 23000: Duplicate entry 'a ' for key 'a'
2275
insert into t1 values ('a     ');
unknown's avatar
unknown committed
2276
ERROR 23000: Duplicate entry 'a     ' for key 'a'
2277
insert into t1 values ('a          ');
unknown's avatar
unknown committed
2278
ERROR 23000: Duplicate entry 'a         ' for key 'a'
2279
insert into t1 values ('a ');
unknown's avatar
unknown committed
2280
ERROR 23000: Duplicate entry 'a ' for key 'a'
2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301
update t1 set a='a  ' where a like 'a%';
select concat(a,'.') from t1;
concat(a,'.')
a  .
update t1 set a='abc    ' where a like 'a ';
select concat(a,'.') from t1;
concat(a,'.')
a  .
update t1 set a='a      ' where a like 'a %';
select concat(a,'.') from t1;
concat(a,'.')
a      .
update t1 set a='a  ' where a like 'a      ';
select concat(a,'.') from t1;
concat(a,'.')
a  .
drop table t1;
create table t1 (v varchar(10), c char(10), t text, key(v(5)), key(c(5)), key(t(5)));
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
unknown's avatar
unknown committed
2302 2303
  `v` varchar(10) DEFAULT NULL,
  `c` char(10) DEFAULT NULL,
2304 2305 2306 2307 2308 2309 2310 2311 2312 2313
  `t` text,
  KEY `v` (`v`(5)),
  KEY `c` (`c`(5)),
  KEY `t` (`t`(5))
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t1;
create table t1 (v char(10) character set utf8);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
unknown's avatar
unknown committed
2314
  `v` char(10) CHARACTER SET utf8 DEFAULT NULL
2315 2316 2317 2318 2319 2320
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t1;
create table t1 (v varchar(10), c char(10)) row_format=fixed;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
unknown's avatar
unknown committed
2321 2322
  `v` varchar(10) DEFAULT NULL,
  `c` char(10) DEFAULT NULL
2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335
) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=FIXED
insert into t1 values('a','a'),('a ','a ');
select concat('*',v,'*',c,'*') from t1;
concat('*',v,'*',c,'*')
*a*a*
*a *a*
drop table t1;
create table t1 (v varchar(65530), key(v(10)));
insert into t1 values(repeat('a',65530));
select length(v) from t1 where v=repeat('a',65530);
length(v)
65530
drop table t1;
2336 2337 2338 2339 2340 2341 2342 2343 2344
create table t1(a int, b varchar(12), key ba(b, a));
insert into t1 values (1, 'A'), (20, NULL);
explain select * from t1 where a=20 and b is null;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	ba	ba	20	const,const	1	Using where; Using index
select * from t1 where a=20 and b is null;
a	b
20	NULL
drop table t1;
2345
create table t1 (v varchar(65530), key(v));
2346 2347 2348
Warnings:
Warning	1071	Specified key was too long; max key length is 767 bytes
drop table t1;
2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363
create table t1 (v varchar(65536));
Warnings:
Note	1246	Converting column 'v' from VARCHAR to TEXT
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `v` mediumtext
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t1;
create table t1 (v varchar(65530) character set utf8);
Warnings:
Note	1246	Converting column 'v' from VARCHAR to TEXT
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
unknown's avatar
unknown committed
2364
  `v` mediumtext CHARACTER SET utf8
2365 2366 2367
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t1;
set storage_engine=MyISAM;