update.result 11.7 KB
Newer Older
1
drop table if exists t1,t2;
unknown's avatar
unknown committed
2 3 4 5 6 7
create table t1 (a int auto_increment , primary key (a));
insert into t1 values (NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL);
update t1 set a=a+10 where a > 34;
update t1 set a=a+100 where a > 0;
update t1 set a=a+100 where a=1 and a=2;
update t1 set a=b+100 where a=1 and a=2;
8
ERROR 42S22: Unknown column 'b' in 'field list'
unknown's avatar
unknown committed
9
update t1 set a=b+100 where c=1 and a=2;
10
ERROR 42S22: Unknown column 'c' in 'where clause'
unknown's avatar
unknown committed
11
update t1 set d=a+100 where a=1;
12
ERROR 42S22: Unknown column 'd' in 'field list'
unknown's avatar
unknown committed
13
select * from t1;
unknown's avatar
unknown committed
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
a
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
145
146
unknown's avatar
unknown committed
51 52 53 54 55 56 57 58 59 60
drop table t1;
CREATE TABLE t1
(
place_id int (10) unsigned NOT NULL,
shows int(10) unsigned DEFAULT '0' NOT NULL,
ishows int(10) unsigned DEFAULT '0' NOT NULL,
ushows int(10) unsigned DEFAULT '0' NOT NULL,
clicks int(10) unsigned DEFAULT '0' NOT NULL,
iclicks int(10) unsigned DEFAULT '0' NOT NULL,
uclicks int(10) unsigned DEFAULT '0' NOT NULL,
61
ts timestamp,
unknown's avatar
unknown committed
62 63 64 65 66 67
PRIMARY KEY (place_id,ts)
);
INSERT INTO t1 (place_id,shows,ishows,ushows,clicks,iclicks,uclicks,ts)
VALUES (1,0,0,0,0,0,0,20000928174434);
UPDATE t1 SET shows=shows+1,ishows=ishows+1,ushows=ushows+1,clicks=clicks+1,iclicks=iclicks+1,uclicks=uclicks+1 WHERE place_id=1 AND ts>="2000-09-28 00:00:00";
select place_id,shows from t1;
68 69
place_id	shows
1	1
unknown's avatar
unknown committed
70 71 72 73 74 75 76 77
drop table t1;
CREATE TABLE t1 (
lfdnr int(10) unsigned NOT NULL default '0',
ticket int(10) unsigned NOT NULL default '0',
client varchar(255) NOT NULL default '',
replyto varchar(255) NOT NULL default '',
subject varchar(100) NOT NULL default '',
timestamp int(10) unsigned NOT NULL default '0',
78
tstamp timestamp NOT NULL,
unknown's avatar
unknown committed
79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96
status int(3) NOT NULL default '0',
type varchar(15) NOT NULL default '',
assignment int(10) unsigned NOT NULL default '0',
fupcount int(4) unsigned NOT NULL default '0',
parent int(10) unsigned NOT NULL default '0',
activity int(10) unsigned NOT NULL default '0',
priority tinyint(1) unsigned NOT NULL default '1',
cc varchar(255) NOT NULL default '',
bcc varchar(255) NOT NULL default '',
body text NOT NULL,
comment text,
header text,
PRIMARY KEY  (lfdnr),
KEY k1 (timestamp),
KEY k2 (type),
KEY k3 (parent),
KEY k4 (assignment),
KEY ticket (ticket)
unknown's avatar
unknown committed
97
) ENGINE=MyISAM;
unknown's avatar
unknown committed
98
INSERT INTO t1 VALUES (773,773,'','','',980257344,20010318180652,0,'Open',10,0,0,0,1,'','','','','');
99
alter table t1 change lfdnr lfdnr int(10) unsigned not null auto_increment;
unknown's avatar
unknown committed
100 101
update t1 set status=1 where type='Open';
select status from t1;
102 103
status
1
unknown's avatar
unknown committed
104
drop table t1;
unknown's avatar
unknown committed
105 106 107 108 109 110
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;
select * from t1 order by a,b;
unknown's avatar
unknown committed
111 112
a	b
1	2
unknown's avatar
unknown committed
113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139
1	3
1	99
2	4
2	5
2	6
3	7
3	8
3	9
3	10
3	11
3	12
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
140 141 142 143
create table t2 (a int not null, b int not null);
insert into t2 values (1,1),(1,2),(1,3);
update t1 set b=(select distinct 1 from (select * from t2) a);
drop table t1,t2;
144 145 146 147 148
CREATE TABLE t1 (
`id_param` smallint(3) unsigned NOT NULL default '0',
`nom_option` char(40) NOT NULL default '',
`valid` tinyint(1) NOT NULL default '0',
KEY `id_param` (`id_param`,`nom_option`)
unknown's avatar
unknown committed
149
) ENGINE=MyISAM;
150 151 152 153 154 155
INSERT INTO t1 (id_param,nom_option,valid) VALUES (185,'600x1200',1);
UPDATE t1 SET nom_option='test' WHERE id_param=185 AND nom_option='600x1200' AND valid=1 LIMIT 1;
select * from t1;
id_param	nom_option	valid
185	test	1
drop table t1;
unknown's avatar
unknown committed
156 157 158 159 160
create table t1 (F1 VARCHAR(30), F2 VARCHAR(30), F3 VARCHAR(30), cnt int, groupid int, KEY groupid_index (groupid));
insert into t1 (F1,F2,F3,cnt,groupid) values ('0','0','0',1,6),
('0','1','2',1,5), ('0','2','0',1,3), ('1','0','1',1,2),
('1','2','1',1,1), ('1','2','2',1,1), ('2','0','1',2,4),
('2','2','0',1,7);
161
delete from m1 using t1 m1,t1 m2 where m1.groupid=m2.groupid and (m1.cnt < m2.cnt or m1.cnt=m2.cnt and m1.F3>m2.F3);
unknown's avatar
unknown committed
162 163 164 165 166 167 168 169 170 171
select * from t1;
F1	F2	F3	cnt	groupid
0	0	0	1	6
0	1	2	1	5
0	2	0	1	3
1	0	1	1	2
1	2	1	1	1
2	0	1	2	4
2	2	0	1	7
drop table t1;
172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208
CREATE TABLE t1 ( 
`colA` int(10) unsigned NOT NULL auto_increment,
`colB` int(11) NOT NULL default '0',
PRIMARY KEY  (`colA`)
);
INSERT INTO t1 VALUES (4433,5424);
CREATE TABLE t2 (
`colC` int(10) unsigned NOT NULL default '0',
`colA` int(10) unsigned NOT NULL default '0',
`colD` int(10) unsigned NOT NULL default '0',
`colE` int(10) unsigned NOT NULL default '0',
`colF` int(10) unsigned NOT NULL default '0',
PRIMARY KEY  (`colC`,`colA`,`colD`,`colE`)
);
INSERT INTO t2 VALUES (3,4433,10005,495,500);
INSERT INTO t2 VALUES (3,4433,10005,496,500);
INSERT INTO t2 VALUES (3,4433,10009,494,500);
INSERT INTO t2 VALUES (3,4433,10011,494,500);
INSERT INTO t2 VALUES (3,4433,10005,497,500);
INSERT INTO t2 VALUES (3,4433,10013,489,500);
INSERT INTO t2 VALUES (3,4433,10005,494,500);
INSERT INTO t2 VALUES (3,4433,10005,493,500);
INSERT INTO t2 VALUES (3,4433,10005,492,500);
UPDATE IGNORE t2,t1 set t2.colE = t2.colE + 1,colF=0 WHERE t1.colA = t2.colA AND (t1.colB & 4096) > 0 AND (colE + 1) < colF;
SELECT * FROM t2;
colC	colA	colD	colE	colF
3	4433	10005	495	500
3	4433	10005	496	500
3	4433	10009	495	0
3	4433	10011	495	0
3	4433	10005	498	0
3	4433	10013	490	0
3	4433	10005	494	500
3	4433	10005	493	500
3	4433	10005	492	500
DROP TABLE t1;
DROP TABLE t2;
209 210 211 212 213 214
create table t1 (c1 int, c2 char(6), c3 int);
create table t2 (c1 int, c2 char(6));
insert into t1 values (1, "t1c2-1", 10), (2, "t1c2-2", 20);
update t1 left join t2 on t1.c1 = t2.c1 set t2.c2 = "t2c2-1";
update t1 left join t2 on t1.c1 = t2.c1 set t2.c2 = "t2c2-1" where t1.c3 = 10;
drop table t1, t2;
unknown's avatar
unknown committed
215 216 217 218 219 220 221
create table t1 (id int not null auto_increment primary key, id_str varchar(32));
insert into t1 (id_str) values ("test");
update t1 set id_str = concat(id_str, id) where id = last_insert_id();
select * from t1;
id	id_str
1	test1
drop table t1;
222 223 224 225 226 227 228
create table t1 (a int, b char(255), key(a, b(20)));
insert into t1 values (0, '1');
update t1 set b = b + 1 where a = 0;
select * from t1;
a	b
0	2
drop table t1;
unknown's avatar
unknown committed
229 230 231 232 233 234 235 236 237 238 239 240 241 242
create table t1 (a int, b varchar(10), key b(b(5))) engine=myisam;
create table t2 (a int, b varchar(10)) engine=myisam;
insert into t1 values ( 1, 'abcd1e');
insert into t1 values ( 2, 'abcd2e');
insert into t2 values ( 1, 'abcd1e');
insert into t2 values ( 2, 'abcd2e');
analyze table t1,t2;
Table	Op	Msg_type	Msg_text
test.t1	analyze	status	OK
test.t2	analyze	status	OK
update t1, t2 set t1.a = t2.a where t2.b = t1.b;
show warnings;
Level	Code	Message
drop table t1, t2;
243 244 245 246 247 248 249 250 251 252 253
create table t1(f1 int, f2 int);
create table t2(f3 int, f4 int);
create index idx on t2(f3);
insert into t1 values(1,0),(2,0);
insert into t2 values(1,1),(2,2);
UPDATE t1 SET t1.f2=(SELECT MAX(t2.f4) FROM t2 WHERE t2.f3=t1.f1);
select * from t1;
f1	f2
1	1
2	2
drop table t1,t2;
254 255 256 257 258 259 260 261 262 263 264 265
create table t1(f1 int);
select DATABASE();
DATABASE()
test
update t1 set f1=1 where count(*)=1;
ERROR HY000: Invalid use of group function
select DATABASE();
DATABASE()
test
delete from t1 where count(*)=1;
ERROR HY000: Invalid use of group function
drop table t1;
266 267
create table t1 ( a int, b int default 0, index (a) );
insert into t1 (a) values (0),(0),(0),(0),(0),(0),(0),(0);
268 269 270 271 272 273 274 275 276 277 278 279 280
flush status;
select a from t1 order by a limit 1;
a
0
show status like 'handler_read%';
Variable_name	Value
Handler_read_first	1
Handler_read_key	0
Handler_read_next	0
Handler_read_prev	0
Handler_read_rnd	0
Handler_read_rnd_next	0
flush status;
281 282
update t1 set a=9999 order by a limit 1;
update t1 set b=9999 order by a limit 1;
283 284 285 286 287 288
show status like 'handler_read%';
Variable_name	Value
Handler_read_first	1
Handler_read_key	0
Handler_read_next	0
Handler_read_prev	0
289 290
Handler_read_rnd	2
Handler_read_rnd_next	9
291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321
flush status;
delete from t1 order by a limit 1;
show status like 'handler_read%';
Variable_name	Value
Handler_read_first	1
Handler_read_key	0
Handler_read_next	0
Handler_read_prev	0
Handler_read_rnd	0
Handler_read_rnd_next	0
flush status;
delete from t1 order by a desc limit 1;
show status like 'handler_read%';
Variable_name	Value
Handler_read_first	0
Handler_read_key	0
Handler_read_next	0
Handler_read_prev	0
Handler_read_rnd	1
Handler_read_rnd_next	9
alter table t1 disable keys;
flush status;
delete from t1 order by a limit 1;
show status like 'handler_read%';
Variable_name	Value
Handler_read_first	0
Handler_read_key	0
Handler_read_next	0
Handler_read_prev	0
Handler_read_rnd	1
Handler_read_rnd_next	9
322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338
select * from t1;
a	b
0	0
0	0
0	0
0	0
0	0
update t1 set a=a+10,b=1 order by a limit 3;
update t1 set a=a+11,b=2 order by a limit 3;
update t1 set a=a+12,b=3 order by a limit 3;
select * from t1 order by a;
a	b
11	2
21	2
22	3
22	3
23	3
339
drop table t1;
340 341 342 343 344 345 346 347
create table t1 (f1 date not null);
insert into t1 values('2000-01-01'),('0000-00-00');
update t1 set f1='2002-02-02' where f1 is null;
select * from t1;
f1
2000-01-01
2002-02-02
drop table t1;
348 349 350 351 352 353 354 355 356 357 358 359 360
create table t1 (f1 int);
create table t2 (f2 int);
insert into t1 values(1),(2);
insert into t2 values(1),(1);
update t1,t2 set f1=3,f2=3 where f1=f2 and f1=1;
affected rows: 3
info: Rows matched: 3  Changed: 3  Warnings: 0
update t2 set f2=1;
update t1 set f1=1 where f1=3;
update t2,t1 set f1=3,f2=3 where f1=f2 and f1=1;
affected rows: 3
info: Rows matched: 3  Changed: 3  Warnings: 0
drop table t1,t2;
361 362 363 364 365 366 367 368 369 370 371 372 373 374 375
create table t1 (a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2 (a int, filler1 char(200), filler2 char(200), key(a));
insert into t2 select A.a + 10*B.a, 'filler','filler' from t1 A, t1 B;
flush status;
update t2 set a=3 where a=2;
show status like 'handler_read%';
Variable_name	Value
Handler_read_first	0
Handler_read_key	1
Handler_read_next	1
Handler_read_prev	0
Handler_read_rnd	1
Handler_read_rnd_next	0
drop table t1, t2;
376 377 378 379
create table t1(f1 int, `*f2` int);
insert into t1 values (1,1);
update t1 set `*f2`=1;
drop table t1;
unknown's avatar
unknown committed
380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436
CREATE TABLE t1 (
request_id int unsigned NOT NULL auto_increment,
user_id varchar(12) default NULL,
time_stamp datetime NOT NULL default '0000-00-00 00:00:00',
ip_address varchar(15) default NULL,
PRIMARY KEY (request_id),
KEY user_id_2 (user_id,time_stamp)
);
INSERT INTO t1 (user_id) VALUES ('user1');
INSERT INTO t1(user_id) SELECT user_id FROM t1;
INSERT INTO t1(user_id) SELECT user_id FROM t1;
INSERT INTO t1(user_id) SELECT user_id FROM t1;
INSERT INTO t1(user_id) SELECT user_id FROM t1;
INSERT INTO t1(user_id) SELECT user_id FROM t1;
INSERT INTO t1(user_id) SELECT user_id FROM t1;
INSERT INTO t1(user_id) SELECT user_id FROM t1;
INSERT INTO t1(user_id) SELECT user_id FROM t1;
flush status;
SELECT user_id FROM t1 WHERE request_id=9999999999999;
user_id
show status like '%Handler_read%';
Variable_name	Value
Handler_read_first	0
Handler_read_key	1
Handler_read_next	0
Handler_read_prev	0
Handler_read_rnd	0
Handler_read_rnd_next	0
SELECT user_id FROM t1 WHERE request_id=999999999999999999999999999999;
user_id
show status like '%Handler_read%';
Variable_name	Value
Handler_read_first	0
Handler_read_key	2
Handler_read_next	0
Handler_read_prev	0
Handler_read_rnd	0
Handler_read_rnd_next	7
UPDATE t1 SET user_id=null WHERE request_id=9999999999999;
show status like '%Handler_read%';
Variable_name	Value
Handler_read_first	0
Handler_read_key	3
Handler_read_next	0
Handler_read_prev	0
Handler_read_rnd	0
Handler_read_rnd_next	14
UPDATE t1 SET user_id=null WHERE request_id=999999999999999999999999999999;
show status like '%Handler_read%';
Variable_name	Value
Handler_read_first	0
Handler_read_key	3
Handler_read_next	0
Handler_read_prev	0
Handler_read_rnd	0
Handler_read_rnd_next	21
DROP TABLE t1;