1
1
drop table if exists t1;
2
2
drop table if exists t2;
4
create TEMPORARY table t1 (a int not null auto_increment,b int, primary key (a)) engine=myisam auto_increment=3;
4
create table t1 (a int not null auto_increment,b int, primary key (a)) engine=myisam auto_increment=3;
5
5
insert into t1 values (1,1),(NULL,3),(NULL,4);
6
6
delete from t1 where a=4;
7
7
insert into t1 values (NULL,5),(NULL,6);
14
14
delete from t1 where a=6;
15
show table status like "t1";
16
Session Schema Name Type Engine Version Rows Avg_row_length Table_size Auto_increment
17
# test t1 TEMPORARY MyISAM # # # # #
18
15
replace t1 values (3,1);
19
16
ALTER TABLE t1 add c int;
20
17
replace t1 values (3,3,3);
44
create table t1 (a char(10) not null, b int not null auto_increment, primary key(a,b));
45
insert into t1 values ("a",1),("b",2),("a",2),("c",1);
46
insert into t1 values ("a",NULL),("b",NULL),("c",NULL),("e",NULL);
47
insert into t1 (a) values ("a"),("b"),("c"),("d");
48
insert into t1 (a) values ('k'),('d');
49
insert into t1 (a) values ("a");
50
insert into t1 values ("d",last_insert_id());
70
create table t1 (ordid int(8) not null auto_increment, ord varchar(50) not null, primary key (ordid), index(ord,ordid));
71
insert into t1 (ordid,ord) values (NULL,'sdj'),(NULL,'sdj');
77
create table t1 (ordid int(8) not null auto_increment, ord varchar(50) not null, primary key (ord,ordid));
78
insert into t1 values (NULL,'sdj'),(NULL,'sdj'),(NULL,"abc"),(NULL,'abc'),(NULL,'zzz'),(NULL,'sdj'),(NULL,'abc');
89
create table t1 (sid char(5), id int(2) NOT NULL auto_increment, key(sid, id));
90
create table t2 (sid char(20), id int(2));
91
insert into t2 values ('skr',NULL),('skr',NULL),('test',NULL);
92
insert into t1 select * from t2;
47
99
create table t1 (a int not null primary key auto_increment);
48
100
insert into t1 values (0);
49
101
update t1 set a=0;
83
create table t1 (i int not null auto_increment, key (i));
84
insert into t1 set i = 254;
85
insert into t1 set i = null;
86
select last_insert_id();
89
insert into t1 set i = null;
90
select last_insert_id();
94
create table t1 (i int not null auto_increment primary key, b int, unique (b));
136
create table t1 (i tinyint unsigned not null auto_increment primary key);
137
insert into t1 set i = 254;
138
insert into t1 set i = null;
139
select last_insert_id();
142
explain extended select last_insert_id();
143
id select_type table type possible_keys key key_len ref rows filtered Extra
144
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
146
Note 1003 select last_insert_id() AS `last_insert_id()`
147
insert into t1 set i = 254;
148
ERROR 23000: Duplicate entry '254' for key 'PRIMARY'
149
select last_insert_id();
152
insert into t1 set i = null;
153
ERROR 23000: Duplicate entry '255' for key 'PRIMARY'
154
select last_insert_id();
158
create table t1 (i tinyint unsigned not null auto_increment, key (i));
159
insert into t1 set i = 254;
160
insert into t1 set i = null;
161
select last_insert_id();
164
insert into t1 set i = null;
166
Warning 1264 Out of range value for column 'i' at row 1
167
select last_insert_id();
171
create table t1 (i tinyint unsigned not null auto_increment primary key, b int, unique (b));
95
172
insert into t1 values (NULL, 10);
96
173
select last_insert_id();
109
186
create table t1(a int auto_increment,b int null,primary key(a));
187
SET SQL_MODE=NO_AUTO_VALUE_ON_ZERO;
110
188
insert into t1(a,b)values(NULL,1);
111
189
insert into t1(a,b)values(200,2);
112
190
insert into t1(a,b)values(0,3);
155
233
update t1 set a=NULL where b=6;
156
234
ERROR 23000: Column 'a' cannot be null
157
235
update t1 set a=300 where b=7;
158
237
insert into t1(a,b)values(NULL,8);
159
238
insert into t1(a,b)values(400,9);
160
239
insert into t1(a,b)values(0,10);
222
303
create table t1 (a bigint);
223
304
insert into t1 values (1), (2), (3), (0), (0);
224
305
alter table t1 modify a bigint not null auto_increment primary key;
225
ERROR 23000: Duplicate entry '0' for key 'PRIMARY'
226
306
select * from t1;
234
314
create table t1 (a bigint);
235
315
insert into t1 values (0), (1), (2), (3);
316
set sql_mode=NO_AUTO_VALUE_ON_ZERO;
236
317
alter table t1 modify a bigint not null auto_increment primary key;
237
319
select * from t1;
244
326
create table t1 (a int auto_increment primary key , b int null);
327
set sql_mode=NO_AUTO_VALUE_ON_ZERO;
245
328
insert into t1 values (0,1),(1,2),(2,3);
246
329
select * from t1;
251
335
alter table t1 modify b varchar(255);
252
336
insert into t1 values (0,4);
253
ERROR 23000: Duplicate entry '0' for key 'PRIMARY'
254
337
select * from t1;
260
344
CREATE TABLE t1 ( a INT AUTO_INCREMENT, b BLOB, PRIMARY KEY (a,b(10)));
261
345
INSERT INTO t1 (b) VALUES ('aaaa');
271
355
Table Op Msg_type Msg_text
272
356
test.t1 check status OK
273
357
DROP TABLE IF EXISTS t1;
275
359
t1_name VARCHAR(255) DEFAULT NULL,
276
t1_id INT not null AUTO_INCREMENT,
360
t1_id INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
278
362
PRIMARY KEY (t1_id)
279
363
) AUTO_INCREMENT = 1000;
288
372
SHOW CREATE TABLE `t1`;
289
373
Table Create Table
290
374
t1 CREATE TABLE `t1` (
291
`t1_name` VARCHAR(255) COLLATE utf8_general_ci DEFAULT NULL,
292
`t1_id` INT NOT NULL AUTO_INCREMENT,
375
`t1_name` varchar(255) DEFAULT NULL,
376
`t1_id` int(10) unsigned NOT NULL AUTO_INCREMENT,
293
377
PRIMARY KEY (`t1_id`),
294
378
KEY `t1_name` (`t1_name`)
295
) ENGINE=InnoDB COLLATE = utf8_general_ci AUTO_INCREMENT=1000
379
) ENGINE=MyISAM AUTO_INCREMENT=1003 DEFAULT CHARSET=latin1
297
381
create table t1(a int not null auto_increment primary key);
298
382
create table t2(a int not null auto_increment primary key, t1a int);
318
402
drop table t1, t2;
320
CREATE TABLE t1 ( `a` int NOT NULL auto_increment, `b` int default NULL,PRIMARY KEY (`a`),UNIQUE KEY `b` (`b`));
404
CREATE TABLE t1 ( `a` int(11) NOT NULL auto_increment, `b` int(11) default NULL,PRIMARY KEY (`a`),UNIQUE KEY `b` (`b`));
321
405
insert into t1 (b) values (1);
322
406
replace into t1 (b) values (2), (1), (3);
323
407
select * from t1;
328
412
truncate table t1;
329
413
insert into t1 (b) values (1);
350
CREATE TABLE t1 (t1 INT PRIMARY KEY, t2 INT);
434
create table t1 (a int not null auto_increment primary key, val int);
435
insert into t1 (val) values (1);
436
update t1 set a=2 where a=1;
437
insert into t1 (val) values (1);
443
CREATE TABLE t1 (t1 INT(10) PRIMARY KEY, t2 INT(10));
351
444
INSERT INTO t1 VALUES(0, 0);
352
445
INSERT INTO t1 VALUES(1, 1);
353
ALTER TABLE t1 CHANGE t1 t1 INT auto_increment;
354
INSERT INTO t1 VALUES(0,0);
355
ERROR 23000: Duplicate entry '0' for key 'PRIMARY'
446
ALTER TABLE t1 CHANGE t1 t1 INT(10) auto_increment;
447
ERROR 23000: ALTER TABLE causes auto_increment resequencing, resulting in duplicate entry '1' for key 'PRIMARY'
357
449
create table t1 (a int primary key auto_increment, b int, c int, d timestamp default current_timestamp, unique(b),unique(c));
358
450
insert into t1 values(null,1,1,now());