4
select database() = "test";
7
select user() like "%@%";
10
select version() > "2009.01.756";
11
version() > "2009.01.756"
13
explain extended select database(), user();
14
id select_type table type possible_keys key key_len ref rows filtered Extra
15
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
17
Note 1003 select database() AS `database()`,user() AS `user()`
18
create table t1 (version char(60)) select database(), user(), version() as 'version';
21
t1 CREATE TABLE `t1` (
22
`database()` varbinary(136) DEFAULT NULL,
23
`user()` varbinary(308) DEFAULT NULL,
24
`version` varchar(60) DEFAULT NULL
27
select TRUE,FALSE,NULL;
30
create table t1 (c1 char(5));
31
insert into t1 values('row 1');
32
insert into t1 values('row 2');
33
insert into t1 values('row 3');
34
select concat(SUBSTRING(user(), 0, 4), '--', c1) from t1;
35
concat(SUBSTRING(user(), 0, 4), '--', c1)
39
select concat(database(), '--', c1) from t1;
40
concat(database(), '--', c1)
45
create table t1 (a char(10));
46
select * from t1 where a=version();
48
select * from t1 where a=database();
50
select * from t1 where a=user();
52
insert into t1 values ('a');
53
select left(concat(a,version()),1) from t1;
54
left(concat(a,version()),1)