@ -1808,6 +1808,590 @@ set global innodb_thread_sleep_delay=10000;
show variables like "innodb_thread_sleep_delay";
Variable_name Value
innodb_thread_sleep_delay 10000
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` (
`v` varchar(10) default NULL,
`c` char(10) default NULL,
`t` text
) ENGINE=InnoDB DEFAULT CHARSET=latin1
create table t2 like t1;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`v` varchar(10) default NULL,
`c` char(10) default NULL,
`t` text
) ENGINE=InnoDB DEFAULT CHARSET=latin1
create table t3 select * from t1;
show create table t3;
Table Create Table
t3 CREATE TABLE `t3` (
`v` varchar(10) default NULL,
`c` char(10) default NULL,
`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` (
`v` varchar(10) default NULL,
`c` varchar(10) default NULL,
`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` (
`v` char(10) default NULL,
`c` varchar(10) default NULL,
`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` (
`v` char(10) default NULL,
`c` varchar(10) default NULL,
`t` varchar(10) default NULL
) 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` (
`v` varchar(10) default NULL,
`c` char(10) default NULL,
`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
1 SIMPLE t1 range t t 13 NULL # 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 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
1 SIMPLE t1 range v v 13 NULL # Using where; Using index
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
1 SIMPLE t1 range v v 13 NULL # Using where; Using index
alter table t1 add unique(v);
ERROR 23000: Duplicate entry '{ ' for key 1
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
a 10
b 10
c 10
d 10
e 10
f 10
g 10
h 10
i 10
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` (
`v` varchar(300) default NULL,
`c` char(10) default NULL,
`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
1 SIMPLE t1 range v v 303 NULL # Using where; Using index
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
1 SIMPLE t1 range v v 303 NULL # Using where; Using index
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` (
`v` varchar(300) default NULL,
`c` char(10) default NULL,
`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
1 SIMPLE t1 range v v 33 NULL # Using where
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
1 SIMPLE t1 range v v 33 NULL # Using where
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` (
`v` varchar(600) default NULL,
`c` char(10) default NULL,
`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 ');
ERROR 23000: Duplicate entry 'a' for key 1
alter table t1 modify a varchar(10);
insert into t1 values ('a '),('a '),('a '),('a ');
ERROR 23000: Duplicate entry 'a ' for key 1
insert into t1 values ('a ');
ERROR 23000: Duplicate entry 'a ' for key 1
insert into t1 values ('a ');
ERROR 23000: Duplicate entry 'a ' for key 1
insert into t1 values ('a ');
ERROR 23000: Duplicate entry 'a ' for key 1
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` (
`v` varchar(10) default NULL,
`c` char(10) default NULL,
`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` (
`v` char(10) character set utf8 default NULL
) 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` (
`v` varchar(10) default NULL,
`c` char(10) default NULL
) 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;
create table t1 (v varchar(65530), key(v));
ERROR HY000: Can't create table './test/t1.frm' (errno: 139)
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` (
`v` mediumtext character set utf8
) ENGINE=InnoDB DEFAULT CHARSET=latin1
drop table t1;
set storage_engine=MyISAM;
create table t1 (v varchar(16384)) engine=innodb;
drop table t1;
create table t1 (a bit, key(a)) engine=innodb;