1
1
drop table if exists t1,t2,t3;
2
create table t1 (a int not null,b int not null, primary key (a)) engine=heap comment="testing heaps" avg_row_length=100 min_rows=1 max_rows=100;
2
create temporary table t1 (a int not null,b int not null, primary key (a)) engine=MEMORY comment="testing heaps";
3
3
insert into t1 values(1,1),(2,2),(3,3),(4,4);
4
4
delete from t1 where a=1 or a=0;
24
24
alter table t1 add c int not null, add key (c,a);
26
create table t1 (a int not null,b int not null, primary key (a)) engine=memory comment="testing heaps";
26
create temporary table t1 (a int not null,b int not null, primary key (a)) engine=memory comment="testing heaps";
27
27
insert into t1 values(1,1),(2,2),(3,3),(4,4);
28
28
delete from t1 where a > 0;
32
create table t1 (a int not null,b int not null, primary key (a)) engine=heap comment="testing heaps";
32
create temporary table t1 (a int not null,b int not null, primary key (a)) engine=MEMORY comment="testing heaps";
33
33
insert into t1 values(1,1),(2,2),(3,3),(4,4);
34
alter table t1 modify a int not null auto_increment, engine=myisam, comment="new myisam table";
34
alter table t1 modify a int not null auto_increment, engine=innodb, comment="new innodb table";
66
alter table t1 engine=myisam;
67
explain select * from t1 where a in (869751,736494,226312,802616);
66
create temporary table t2 SELECT * FROM t1;
67
explain select * from t2 where a in (869751,736494,226312,802616);
68
68
id select_type table type possible_keys key key_len ref rows Extra
69
1 SIMPLE t1 range uniq_id uniq_id 4 NULL 4 Using where; Using index
71
create table t1 (x int not null, y int not null, key x (x), unique y (y))
69
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 Using where
71
create temporary table t1 (x int not null, y int not null, key x (x), unique y (y))
73
73
insert into t1 values (1,1),(2,2),(1,3),(2,4),(2,5),(2,6);
74
74
select * from t1 where x=1;
78
78
select * from t1,t1 as t2 where t1.x=t2.y;
79
ERROR HY000: Can't reopen table: 't1'
86
80
explain select * from t1,t1 as t2 where t1.x=t2.y;
87
id select_type table type possible_keys key key_len ref rows Extra
88
1 SIMPLE t1 ALL x NULL NULL NULL 6
89
1 SIMPLE t2 eq_ref y y 4 test.t1.x 1
81
ERROR HY000: Can't reopen table: 't1'
91
create table t1 (a int) engine=heap;
83
create temporary table t1 (a int) engine=MEMORY;
92
84
insert into t1 values(1);
93
85
select max(a) from t1;
97
CREATE TABLE t1 ( a int not null default 0, b int not null default 0, key(a), key(b) ) ENGINE=HEAP;
89
CREATE TEMPORARY TABLE t1 ( a int not null default 0, b int not null default 0, key(a), key(b) ) ENGINE=MEMORY;
98
90
insert into t1 values(1,1),(1,2),(2,3),(1,3),(1,4),(1,5),(1,6);
99
91
select * from t1 where a=1;
132
124
replace into t1 values(1);
134
create table t1 (n int) engine=heap;
126
create temporary table t1 (n int) engine=MEMORY;
136
create table t1 (n int) engine=heap;
128
create temporary table t1 (n int) engine=MEMORY;
137
129
drop table if exists t1;
138
CREATE table t1(f1 int not null,f2 char(20) not
139
null,index(f2)) engine=heap;
130
CREATE TEMPORARY table t1(f1 int not null,f2 char(20) not
131
null,index(f2)) engine=MEMORY;
140
132
INSERT into t1 set f1=12,f2="bill";
141
133
INSERT into t1 set f1=13,f2="bill";
142
134
INSERT into t1 set f1=14,f2="bill";
158
create table t1 (btn char(10) not null, key(btn)) engine=heap;
150
create temporary table t1 (btn char(10) not null, key(btn)) engine=MEMORY;
159
151
insert into t1 values ("hello"),("hello"),("hello"),("hello"),("hello"),("a"),("b"),("c"),("d"),("e"),("f"),("g"),("h"),("i");
160
152
explain select * from t1 where btn like "q%";
161
153
id select_type table type possible_keys key key_len ref rows Extra
169
161
1 SIMPLE t1 ALL btn NULL NULL NULL 14 Using where
170
162
explain select * from t1 where btn="a" and new_col="a";
171
163
id select_type table type possible_keys key key_len ref rows Extra
172
1 SIMPLE t1 ref btn btn 15 const,const 2 Using where
164
1 SIMPLE t1 ref btn btn 48 const,const 2 Using where
166
CREATE TEMPORARY TABLE t1 (
175
167
a int default NULL,
176
168
b int default NULL,
180
172
INSERT INTO t1 VALUES (NULL,99),(99,NULL),(1,1),(2,2),(1,3);
181
173
SELECT * FROM t1 WHERE a=NULL;
214
CREATE TABLE t1 (a int not null, primary key(a)) engine=heap;
206
CREATE TEMPORARY TABLE t1 (a int not null, primary key(a)) engine=MEMORY;
215
207
INSERT into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11);
216
208
DELETE from t1 where a < 100;
217
209
SELECT * from t1;
220
CREATE TABLE `job_titles` (
221
`job_title_id` int unsigned NOT NULL default '0',
212
CREATE TEMPORARY TABLE `job_titles` (
213
`job_title_id` int NOT NULL default '0',
222
214
`job_title` char(18) NOT NULL default '',
223
215
PRIMARY KEY (`job_title_id`),
224
216
UNIQUE KEY `job_title_id` (`job_title_id`,`job_title`)
226
218
SELECT MAX(job_title_id) FROM job_titles;
227
219
MAX(job_title_id)
229
221
DROP TABLE job_titles;
230
CREATE TABLE t1 (a INT NOT NULL, B INT, KEY(B)) ENGINE=HEAP;
222
CREATE TEMPORARY TABLE t1 (a INT NOT NULL, B INT, KEY(B)) ENGINE=MEMORY;
231
223
INSERT INTO t1 VALUES(1,1), (1,NULL);
232
224
SELECT * FROM t1 WHERE B is not null;
236
CREATE TABLE t1 (pseudo char(35) PRIMARY KEY, date int unsigned NOT NULL) ENGINE=HEAP;
228
CREATE TEMPORARY TABLE t1 (pseudo char(35) PRIMARY KEY, date int NOT NULL) ENGINE=MEMORY;
237
229
INSERT INTO t1 VALUES ('massecot',1101106491),('altec',1101106492),('stitch+',1101106304),('Seb Corgan',1101106305),('beerfilou',1101106263),('flaker',1101106529),('joce8',5),('M4vrick',1101106418),('gabay008',1101106525),('Vamp irX',1101106291),('ZoomZip',1101106546),('rip666',1101106502),('CBP ',1101106397),('guezpard',1101106496);
238
230
DELETE FROM t1 WHERE date<1101106546;
239
231
SELECT * FROM t1;
241
233
ZoomZip 1101106546
243
create table t1(a char(2)) engine=memory;
235
create temporary table t1(a char(2)) engine=memory;
244
236
insert into t1 values (NULL), (NULL);
245
237
delete from t1 where a is null;
246
238
insert into t1 values ('2'), ('3');
252
set storage_engine=HEAP;
253
create table t1 (v varchar(10), c char(10), t varchar(50));
244
set storage_engine=MEMORY;
245
create temporary table t1 (v varchar(10), c char(10), t varchar(50));
254
246
insert into t1 values('+ ', '+ ', '+ ');
255
247
set @a=repeat(' ',20);
256
248
insert into t1 values (concat('+',@a),concat('+',@a),concat('+',@a));
264
256
show create table t1;
265
257
Table Create Table
266
t1 CREATE TABLE "t1" (
270
) ENGINE=MEMORY DEFAULT CHARSET=latin1
271
create table t2 like t1;
258
t1 CREATE TEMPORARY TABLE `t1` (
259
`v` varchar(10) DEFAULT NULL,
260
`c` varchar(10) DEFAULT NULL,
261
`t` varchar(50) DEFAULT NULL
263
create temporary table t2 like t1;
272
264
show create table t2;
273
265
Table Create Table
274
t2 CREATE TABLE "t2" (
278
) ENGINE=MEMORY DEFAULT CHARSET=latin1
279
create table t3 select * from t1;
266
t2 CREATE TEMPORARY TABLE `t2` (
267
`v` varchar(10) DEFAULT NULL,
268
`c` varchar(10) DEFAULT NULL,
269
`t` varchar(50) DEFAULT NULL
271
create temporary table t3 select * from t1;
280
272
show create table t3;
281
273
Table Create Table
282
t3 CREATE TABLE "t3" (
286
) ENGINE=MEMORY DEFAULT CHARSET=latin1
274
t3 CREATE TEMPORARY TABLE `t3` (
275
`v` varchar(10) DEFAULT NULL,
276
`c` varchar(10) DEFAULT NULL,
277
`t` varchar(50) DEFAULT NULL
287
279
alter table t1 modify c varchar(10);
288
280
show create table t1;
289
281
Table Create Table
290
t1 CREATE TABLE "t1" (
294
) ENGINE=MEMORY DEFAULT CHARSET=latin1
282
t1 CREATE TEMPORARY TABLE `t1` (
283
`v` varchar(10) DEFAULT NULL,
284
`c` varchar(10) DEFAULT NULL,
285
`t` varchar(50) DEFAULT NULL
295
287
alter table t1 modify v char(10);
296
288
show create table t1;
297
289
Table Create Table
298
t1 CREATE TABLE "t1" (
302
) ENGINE=MEMORY DEFAULT CHARSET=latin1
290
t1 CREATE TEMPORARY TABLE `t1` (
291
`v` varchar(10) DEFAULT NULL,
292
`c` varchar(10) DEFAULT NULL,
293
`t` varchar(50) DEFAULT NULL
303
295
alter table t1 modify t varchar(50);
304
296
show create table t1;
305
297
Table Create Table
306
t1 CREATE TABLE "t1" (
310
) ENGINE=MEMORY DEFAULT CHARSET=latin1
298
t1 CREATE TEMPORARY TABLE `t1` (
299
`v` varchar(10) DEFAULT NULL,
300
`c` varchar(10) DEFAULT NULL,
301
`t` varchar(50) DEFAULT NULL
311
303
select concat('*',v,'*',c,'*',t,'*') from t1;
312
304
concat('*',v,'*',c,'*',t,'*')
315
307
drop table t1,t2,t3;
316
create table t1 (v varchar(10), c char(10), t varchar(50), key(v), key(c), key(t(10)));
308
create temporary table t1 (v varchar(10), c char(10), t varchar(50), key(v), key(c), key(t(10)));
317
309
show create table t1;
318
310
Table Create Table
319
t1 CREATE TABLE "t1" (
326
) ENGINE=MEMORY DEFAULT CHARSET=latin1
311
t1 CREATE TEMPORARY TABLE `t1` (
312
`v` varchar(10) DEFAULT NULL,
313
`c` varchar(10) DEFAULT NULL,
314
`t` varchar(50) DEFAULT NULL,
327
319
select count(*) from t1;
367
359
explain select count(*) from t1 where v='a ';
368
360
id select_type table type possible_keys key key_len ref rows Extra
369
1 SIMPLE t1 ref v v 13 const 10 Using where
361
1 SIMPLE t1 ref v v 43 const 10 Using where
370
362
explain select count(*) from t1 where c='a ';
371
363
id select_type table type possible_keys key key_len ref rows Extra
372
1 SIMPLE t1 ref c c 13 const 10 Using where
364
1 SIMPLE t1 ref c c 43 const 10 Using where
373
365
explain select count(*) from t1 where t='a ';
374
366
id select_type table type possible_keys key key_len ref rows Extra
375
1 SIMPLE t1 ref t t 13 const 10 Using where
367
1 SIMPLE t1 ref t t 43 const 10 Using where
376
368
explain select count(*) from t1 where v like 'a%';
377
369
id select_type table type possible_keys key key_len ref rows Extra
378
370
1 SIMPLE t1 ALL v NULL NULL NULL 271 Using where
379
371
explain select count(*) from t1 where v between 'a' and 'a ';
380
372
id select_type table type possible_keys key key_len ref rows Extra
381
1 SIMPLE t1 ref v v 13 const 10 Using where
373
1 SIMPLE t1 ref v v 43 const 10 Using where
382
374
explain select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n';
383
375
id select_type table type possible_keys key key_len ref rows Extra
384
1 SIMPLE t1 ref v v 13 const 10 Using where
376
1 SIMPLE t1 ref v v 43 const 10 Using where
385
377
alter table t1 add unique(v);
386
378
ERROR 23000: Duplicate entry '{ ' for key 'v_2'
387
379
select concat('*',v,'*',c,'*',t,'*') as qq from t1 where v='a' order by length(concat('*',v,'*',c,'*',t,'*'));
548
528
update t1 set a='a ' where a like 'a ';
549
529
update t1 set a='a ' where a like 'a ';
551
create table t1 (v varchar(10), c char(10), t varchar(50), key using btree (v), key using btree (c), key using btree (t(10)));
531
create temporary table t1 (v varchar(10), c char(10), t varchar(50), key using btree (v), key using btree (c), key using btree (t(10)));
552
532
show create table t1;
553
533
Table Create Table
554
t1 CREATE TABLE "t1" (
558
KEY "v" ("v") USING BTREE,
559
KEY "c" ("c") USING BTREE,
560
KEY "t" ("t"(10)) USING BTREE
561
) ENGINE=MEMORY DEFAULT CHARSET=latin1
534
t1 CREATE TEMPORARY TABLE `t1` (
535
`v` varchar(10) DEFAULT NULL,
536
`c` varchar(10) DEFAULT NULL,
537
`t` varchar(50) DEFAULT NULL,
538
KEY `v` (`v`) USING BTREE,
539
KEY `c` (`c`) USING BTREE,
540
KEY `t` (`t`(10)) USING BTREE
562
542
select count(*) from t1;
590
570
explain select count(*) from t1 where v='a ';
591
571
id select_type table type possible_keys key key_len ref rows Extra
592
1 SIMPLE t1 ref v v 13 const # Using where
572
1 SIMPLE t1 ref v v 43 const # Using where
593
573
explain select count(*) from t1 where c='a ';
594
574
id select_type table type possible_keys key key_len ref rows Extra
595
1 SIMPLE t1 ref c c 13 const # Using where
575
1 SIMPLE t1 ref c c 43 const # Using where
596
576
explain select count(*) from t1 where t='a ';
597
577
id select_type table type possible_keys key key_len ref rows Extra
598
1 SIMPLE t1 ref t t 13 const # Using where
578
1 SIMPLE t1 ref t t 43 const # Using where
599
579
explain select count(*) from t1 where v like 'a%';
600
580
id select_type table type possible_keys key key_len ref rows Extra
601
1 SIMPLE t1 range v v 13 NULL # Using where
581
1 SIMPLE t1 range v v 43 NULL # Using where
602
582
explain select count(*) from t1 where v between 'a' and 'a ';
603
583
id select_type table type possible_keys key key_len ref rows Extra
604
1 SIMPLE t1 ref v v 13 const # Using where
584
1 SIMPLE t1 ref v v 43 const # Using where
605
585
explain select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n';
606
586
id select_type table type possible_keys key key_len ref rows Extra
607
1 SIMPLE t1 ref v v 13 const # Using where
587
1 SIMPLE t1 ref v v 43 const # Using where
608
588
alter table t1 add unique(v);
609
589
ERROR 23000: Duplicate entry '{ ' for key 'v_2'
610
590
select concat('*',v,'*',c,'*',t,'*') as qq from t1 where v='a' order by length(concat('*',v,'*',c,'*',t,'*'));
622
602
explain select * from t1 where v='a';
623
603
id select_type table type possible_keys key key_len ref rows Extra
624
1 SIMPLE t1 ref v v 13 const # Using where
604
1 SIMPLE t1 ref v v 43 const # Using where
626
create table t1 (a char(10), unique using btree (a)) engine=heap;
606
create temporary table t1 (a char(10), unique using btree (a)) engine=MEMORY;
627
607
insert into t1 values ('a');
628
608
insert into t1 values ('a ');
629
609
ERROR 23000: Duplicate entry 'a ' for key 'a'
639
619
update t1 set a='a ' where a like 'a ';
640
620
update t1 set a='a ' where a like 'a ';
642
create table t1 (v varchar(10), c char(10), t varchar(50), key(v(5)), key(c(5)), key(t(5)));
622
create temporary table t1 (v varchar(10), c char(10), t varchar(50), key(v(5)), key(c(5)), key(t(5)));
643
623
show create table t1;
644
624
Table Create Table
645
t1 CREATE TABLE "t1" (
652
) ENGINE=MEMORY DEFAULT CHARSET=latin1
625
t1 CREATE TEMPORARY TABLE `t1` (
626
`v` varchar(10) DEFAULT NULL,
627
`c` varchar(10) DEFAULT NULL,
628
`t` varchar(50) DEFAULT NULL,
654
create table t1 (v varchar(65530), key(v(10)));
634
create temporary table t1 (v varchar(16383), key(v(10)));
655
635
show create table t1;
656
636
Table Create Table
657
t1 CREATE TABLE "t1" (
660
) ENGINE=MEMORY DEFAULT CHARSET=latin1
661
insert into t1 values(repeat('a',65530));
662
select length(v) from t1 where v=repeat('a',65530);
637
t1 CREATE TEMPORARY TABLE `t1` (
638
`v` varchar(16383) DEFAULT NULL,
641
insert into t1 values(repeat('a',16383));
642
select length(v) from t1 where v=repeat('a',16383);
666
646
set storage_engine=InnoDB;
667
create table t1 (a bigint unsigned auto_increment primary key, b int,
668
key (b, a)) engine=heap;
647
create temporary table t1 (a bigint auto_increment primary key, b int,
648
key (b, a)) engine=MEMORY;
669
649
insert t1 (b) values (1),(1),(1),(1),(1),(1),(1),(1);
670
650
select * from t1;
681
create table t1 (a int not null, b int not null auto_increment,
682
primary key(a, b), key(b)) engine=heap;
661
create temporary table t1 (a int not null, b int not null auto_increment,
662
primary key(a, b), key(b)) engine=MEMORY;
683
663
insert t1 (a) values (1),(1),(1),(1),(1),(1),(1),(1);
684
664
select * from t1;
695
create table t1 (a int not null, b int not null auto_increment,
696
primary key(a, b)) engine=heap;
675
create temporary table t1 (a int not null, b int not null auto_increment,
676
primary key(a, b)) engine=MEMORY;
697
677
ERROR 42000: Incorrect table definition; there can be only one auto column and it must be defined as a key
698
create table t1 (c char(255), primary key(c(90)));
678
create temporary table t1 (c char(255), primary key(c(90)));
699
679
insert into t1 values ("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
700
680
insert into t1 values ("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
701
681
ERROR 23000: Duplicate entry 'abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijkl' for key 'PRIMARY'
703
CREATE TABLE t1 (a int, key(a)) engine=heap;
683
CREATE TEMPORARY TABLE t1 (a int, key(a)) engine=MEMORY;
704
684
insert into t1 values (0);
706
686
select * from t1;
713
create table t1 (c char(10)) engine=memory;
714
create table t2 (c varchar(10)) engine=memory;
693
create temporary table t1 (c char(10)) engine=memory;
694
create temporary table t2 (c varchar(10)) engine=memory;
715
695
show table status like 't_';
716
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
717
t1 MEMORY 10 Fixed 0 12 0 # 0 0 NULL NULL NULL NULL latin1_swedish_ci NULL
718
t2 MEMORY 10 Fixed 0 12 0 # 0 0 NULL NULL NULL NULL latin1_swedish_ci NULL
696
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment Plugin_name
719
697
drop table t1, t2;
720
CREATE TABLE t1(a VARCHAR(1), b VARCHAR(2), c VARCHAR(256),
698
CREATE TEMPORARY TABLE t1(a VARCHAR(1), b VARCHAR(2), c VARCHAR(256),
721
699
KEY(a), KEY(b), KEY(c)) ENGINE=MEMORY;
722
700
INSERT INTO t1 VALUES('a','aa',REPEAT('a', 256)),('a','aa',REPEAT('a',256));
723
701
SELECT COUNT(*) FROM t1 WHERE a='a';