2002-11-24 14:47:19 +01:00
|
|
|
|
select CAST(1-2 AS UNSIGNED);
|
|
|
|
|
|
CAST(1-2 AS UNSIGNED)
|
|
|
|
|
|
18446744073709551615
|
|
|
|
|
|
select CAST(CAST(1-2 AS UNSIGNED) AS SIGNED INTEGER);
|
|
|
|
|
|
CAST(CAST(1-2 AS UNSIGNED) AS SIGNED INTEGER)
|
|
|
|
|
|
-1
|
|
|
|
|
|
select CONVERT('-1',UNSIGNED);
|
|
|
|
|
|
CONVERT('-1',UNSIGNED)
|
|
|
|
|
|
18446744073709551615
|
|
|
|
|
|
select cast(-5 as unsigned) | 1, cast(-5 as unsigned) & -1;
|
|
|
|
|
|
cast(-5 as unsigned) | 1 cast(-5 as unsigned) & -1
|
|
|
|
|
|
18446744073709551611 18446744073709551611
|
|
|
|
|
|
select cast(-5 as unsigned) -1, cast(-5 as unsigned) + 1;
|
|
|
|
|
|
cast(-5 as unsigned) -1 cast(-5 as unsigned) + 1
|
|
|
|
|
|
18446744073709551610 18446744073709551612
|
|
|
|
|
|
select ~5, cast(~5 as signed);
|
|
|
|
|
|
~5 cast(~5 as signed)
|
|
|
|
|
|
18446744073709551610 -6
|
2003-10-30 11:57:26 +01:00
|
|
|
|
explain extended select ~5, cast(~5 as signed);
|
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
|
|
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
|
|
|
|
Warnings:
|
2004-05-13 22:47:20 +02:00
|
|
|
|
Note 1003 select ~(5) AS `~5`,cast(~(5) as signed) AS `cast(~5 as signed)`
|
2002-11-24 14:47:19 +01:00
|
|
|
|
select cast(5 as unsigned) -6.0;
|
|
|
|
|
|
cast(5 as unsigned) -6.0
|
|
|
|
|
|
-1.0
|
2004-02-09 12:31:03 +01:00
|
|
|
|
select cast(NULL as signed), cast(1/0 as signed);
|
|
|
|
|
|
cast(NULL as signed) cast(1/0 as signed)
|
|
|
|
|
|
NULL NULL
|
|
|
|
|
|
select cast(NULL as unsigned), cast(1/0 as unsigned);
|
|
|
|
|
|
cast(NULL as unsigned) cast(1/0 as unsigned)
|
|
|
|
|
|
NULL NULL
|
2002-11-24 14:47:19 +01:00
|
|
|
|
select cast("A" as binary) = "a", cast(BINARY "a" as CHAR) = "A";
|
|
|
|
|
|
cast("A" as binary) = "a" cast(BINARY "a" as CHAR) = "A"
|
|
|
|
|
|
0 1
|
|
|
|
|
|
select cast("2001-1-1" as DATE), cast("2001-1-1" as DATETIME);
|
|
|
|
|
|
cast("2001-1-1" as DATE) cast("2001-1-1" as DATETIME)
|
2002-12-11 08:17:51 +01:00
|
|
|
|
2001-01-01 2001-01-01 00:00:00
|
2002-11-24 14:47:19 +01:00
|
|
|
|
select cast("1:2:3" as TIME);
|
|
|
|
|
|
cast("1:2:3" as TIME)
|
2002-12-14 16:43:01 +01:00
|
|
|
|
01:02:03
|
2004-01-22 21:13:24 +01:00
|
|
|
|
select CONVERT("2004-01-22 21:45:33",DATE);
|
|
|
|
|
|
CONVERT("2004-01-22 21:45:33",DATE)
|
|
|
|
|
|
2004-01-22
|
2004-02-09 12:31:03 +01:00
|
|
|
|
select CONVERT(DATE "2004-01-22 21:45:33" USING latin1);
|
|
|
|
|
|
CONVERT(DATE "2004-01-22 21:45:33" USING latin1)
|
|
|
|
|
|
2004-01-22 21:45:33
|
|
|
|
|
|
select CONVERT(DATE "2004-01-22 21:45:33",CHAR);
|
|
|
|
|
|
CONVERT(DATE "2004-01-22 21:45:33",CHAR)
|
|
|
|
|
|
2004-01-22 21:45:33
|
|
|
|
|
|
select CONVERT(DATE "2004-01-22 21:45:33",CHAR(4));
|
|
|
|
|
|
CONVERT(DATE "2004-01-22 21:45:33",CHAR(4))
|
|
|
|
|
|
2004
|
2004-03-26 13:11:46 +01:00
|
|
|
|
select CONVERT(DATE "2004-01-22 21:45:33",BINARY(4));
|
|
|
|
|
|
CONVERT(DATE "2004-01-22 21:45:33",BINARY(4))
|
2004-02-09 12:31:03 +01:00
|
|
|
|
2004
|
2004-03-26 13:11:46 +01:00
|
|
|
|
select CAST(DATE "2004-01-22 21:45:33" AS BINARY(4));
|
|
|
|
|
|
CAST(DATE "2004-01-22 21:45:33" AS BINARY(4))
|
2004-02-09 12:31:03 +01:00
|
|
|
|
2004
|
2003-05-30 20:09:35 +02:00
|
|
|
|
set names binary;
|
2003-05-28 14:57:58 +02:00
|
|
|
|
select cast(_latin1'test' as char character set latin2);
|
|
|
|
|
|
cast(_latin1'test' as char character set latin2)
|
|
|
|
|
|
test
|
|
|
|
|
|
select cast(_koi8r'<27><><EFBFBD><EFBFBD>' as char character set cp1251);
|
|
|
|
|
|
cast(_koi8r'<27><><EFBFBD><EFBFBD>' as char character set cp1251)
|
|
|
|
|
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|
|
|
|
|
create table t1 select cast(_koi8r'<27><><EFBFBD><EFBFBD>' as char character set cp1251) as t;
|
|
|
|
|
|
show create table t1;
|
|
|
|
|
|
Table Create Table
|
|
|
|
|
|
t1 CREATE TABLE `t1` (
|
2004-12-07 14:47:00 +01:00
|
|
|
|
`t` varchar(4) character set cp1251 NOT NULL default ''
|
2003-12-10 05:31:42 +01:00
|
|
|
|
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
2003-05-28 14:57:58 +02:00
|
|
|
|
drop table t1;
|
2003-08-21 11:15:25 +02:00
|
|
|
|
select
|
|
|
|
|
|
cast(_latin1'ab' AS char) as c1,
|
|
|
|
|
|
cast(_latin1'a ' AS char) as c2,
|
|
|
|
|
|
cast(_latin1'abc' AS char(2)) as c3,
|
|
|
|
|
|
cast(_latin1'a ' AS char(2)) as c4,
|
|
|
|
|
|
cast(_latin1'a' AS char(2)) as c5;
|
|
|
|
|
|
c1 c2 c3 c4 c5
|
|
|
|
|
|
ab a ab a a
|
|
|
|
|
|
create table t1 select
|
|
|
|
|
|
cast(_latin1'ab' AS char) as c1,
|
|
|
|
|
|
cast(_latin1'a ' AS char) as c2,
|
|
|
|
|
|
cast(_latin1'abc' AS char(2)) as c3,
|
|
|
|
|
|
cast(_latin1'a ' AS char(2)) as c4,
|
|
|
|
|
|
cast(_latin1'a' AS char(2)) as c5;
|
|
|
|
|
|
select * from t1;
|
|
|
|
|
|
c1 c2 c3 c4 c5
|
2004-12-07 14:47:00 +01:00
|
|
|
|
ab a ab a a
|
2003-08-21 11:15:25 +02:00
|
|
|
|
show create table t1;
|
|
|
|
|
|
Table Create Table
|
|
|
|
|
|
t1 CREATE TABLE `t1` (
|
2004-12-08 11:03:29 +01:00
|
|
|
|
`c1` varbinary(2) NOT NULL default '',
|
|
|
|
|
|
`c2` varbinary(2) NOT NULL default '',
|
|
|
|
|
|
`c3` varbinary(2) NOT NULL default '',
|
|
|
|
|
|
`c4` varbinary(2) NOT NULL default '',
|
|
|
|
|
|
`c5` varbinary(2) NOT NULL default ''
|
2003-12-10 05:31:42 +01:00
|
|
|
|
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
2003-08-21 11:15:25 +02:00
|
|
|
|
drop table t1;
|
|
|
|
|
|
select
|
|
|
|
|
|
cast(_koi8r'<27><>' AS nchar) as c1,
|
|
|
|
|
|
cast(_koi8r'<27> ' AS nchar) as c2,
|
|
|
|
|
|
cast(_koi8r'<27><><EFBFBD>' AS nchar(2)) as c3,
|
|
|
|
|
|
cast(_koi8r'<27> ' AS nchar(2)) as c4,
|
|
|
|
|
|
cast(_koi8r'<27>' AS nchar(2)) as c5;
|
|
|
|
|
|
c1 c2 c3 c4 c5
|
|
|
|
|
|
фг ф фг ф ф
|
|
|
|
|
|
create table t1 select
|
|
|
|
|
|
cast(_koi8r'<27><>' AS nchar) as c1,
|
|
|
|
|
|
cast(_koi8r'<27> ' AS nchar) as c2,
|
|
|
|
|
|
cast(_koi8r'<27><><EFBFBD>' AS nchar(2)) as c3,
|
|
|
|
|
|
cast(_koi8r'<27> ' AS nchar(2)) as c4,
|
|
|
|
|
|
cast(_koi8r'<27>' AS nchar(2)) as c5;
|
|
|
|
|
|
select * from t1;
|
|
|
|
|
|
c1 c2 c3 c4 c5
|
2004-12-07 14:47:00 +01:00
|
|
|
|
фг ф фг ф ф
|
2003-08-21 11:15:25 +02:00
|
|
|
|
show create table t1;
|
|
|
|
|
|
Table Create Table
|
|
|
|
|
|
t1 CREATE TABLE `t1` (
|
2004-12-07 14:47:00 +01:00
|
|
|
|
`c1` varchar(2) character set utf8 NOT NULL default '',
|
|
|
|
|
|
`c2` varchar(2) character set utf8 NOT NULL default '',
|
|
|
|
|
|
`c3` varchar(2) character set utf8 NOT NULL default '',
|
|
|
|
|
|
`c4` varchar(2) character set utf8 NOT NULL default '',
|
|
|
|
|
|
`c5` varchar(2) character set utf8 NOT NULL default ''
|
2003-12-10 05:31:42 +01:00
|
|
|
|
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
2003-08-21 11:15:25 +02:00
|
|
|
|
drop table t1;
|
2003-12-25 14:42:17 +01:00
|
|
|
|
create table t1 (a binary(10), b char(10) character set koi8r);
|
|
|
|
|
|
insert into t1 values (_binary'<27><><EFBFBD><EFBFBD>',_binary'<27><><EFBFBD><EFBFBD>');
|
|
|
|
|
|
select a,b,cast(a as char character set cp1251),cast(b as binary) from t1;
|
|
|
|
|
|
a b cast(a as char character set cp1251) cast(b as binary)
|
|
|
|
|
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <09><><EFBFBD><EFBFBD> <09><><EFBFBD><EFBFBD> <09><><EFBFBD><EFBFBD>
|
|
|
|
|
|
set names koi8r;
|
|
|
|
|
|
select a,b,cast(a as char character set cp1251),cast(b as binary) from t1;
|
|
|
|
|
|
a b cast(a as char character set cp1251) cast(b as binary)
|
|
|
|
|
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <09><><EFBFBD><EFBFBD> <09><><EFBFBD><EFBFBD> <09><><EFBFBD><EFBFBD>
|
|
|
|
|
|
set names cp1251;
|
|
|
|
|
|
select a,b,cast(a as char character set cp1251),cast(b as binary) from t1;
|
|
|
|
|
|
a b cast(a as char character set cp1251) cast(b as binary)
|
|
|
|
|
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <09><><EFBFBD><EFBFBD> <09><><EFBFBD><EFBFBD> <09><><EFBFBD><EFBFBD>
|
|
|
|
|
|
drop table t1;
|
|
|
|
|
|
set names binary;
|
2002-11-24 14:47:19 +01:00
|
|
|
|
select cast("2001-1-1" as date) = "2001-01-01";
|
|
|
|
|
|
cast("2001-1-1" as date) = "2001-01-01"
|
2003-07-08 12:06:05 +02:00
|
|
|
|
1
|
2002-11-24 14:47:19 +01:00
|
|
|
|
select cast("2001-1-1" as datetime) = "2001-01-01 00:00:00";
|
|
|
|
|
|
cast("2001-1-1" as datetime) = "2001-01-01 00:00:00"
|
2003-07-08 12:06:05 +02:00
|
|
|
|
1
|
2002-11-24 14:47:19 +01:00
|
|
|
|
select cast("1:2:3" as TIME) = "1:02:03";
|
|
|
|
|
|
cast("1:2:3" as TIME) = "1:02:03"
|
|
|
|
|
|
0
|
2003-03-27 15:11:01 +01:00
|
|
|
|
select cast(NULL as DATE);
|
|
|
|
|
|
cast(NULL as DATE)
|
|
|
|
|
|
NULL
|
2003-03-28 15:57:03 +01:00
|
|
|
|
select cast(NULL as BINARY);
|
|
|
|
|
|
cast(NULL as BINARY)
|
|
|
|
|
|
NULL
|
2004-09-07 12:42:19 +02:00
|
|
|
|
CREATE TABLE t1 (a enum ('aac','aab','aaa') not null);
|
|
|
|
|
|
INSERT INTO t1 VALUES ('aaa'),('aab'),('aac');
|
|
|
|
|
|
SELECT a, CAST(a AS CHAR) FROM t1 ORDER BY CAST(a AS UNSIGNED) ;
|
|
|
|
|
|
a CAST(a AS CHAR)
|
|
|
|
|
|
aac aac
|
|
|
|
|
|
aab aab
|
|
|
|
|
|
aaa aaa
|
|
|
|
|
|
SELECT a, CAST(a AS CHAR(3)) FROM t1 ORDER BY CAST(a AS CHAR(2)), a;
|
|
|
|
|
|
a CAST(a AS CHAR(3))
|
|
|
|
|
|
aac aac
|
|
|
|
|
|
aab aab
|
|
|
|
|
|
aaa aaa
|
|
|
|
|
|
SELECT a, CAST(a AS UNSIGNED) FROM t1 ORDER BY CAST(a AS CHAR) ;
|
|
|
|
|
|
a CAST(a AS UNSIGNED)
|
|
|
|
|
|
aaa 3
|
|
|
|
|
|
aab 2
|
|
|
|
|
|
aac 1
|
|
|
|
|
|
SELECT a, CAST(a AS CHAR(2)) FROM t1 ORDER BY CAST(a AS CHAR(3)), a;
|
|
|
|
|
|
a CAST(a AS CHAR(2))
|
|
|
|
|
|
aaa aa
|
|
|
|
|
|
aab aa
|
|
|
|
|
|
aac aa
|
|
|
|
|
|
DROP TABLE t1;
|
2004-12-30 11:39:01 +01:00
|
|
|
|
select date_add(cast('2004-12-30 12:00:00' as date), interval 0 hour);
|
|
|
|
|
|
date_add(cast('2004-12-30 12:00:00' as date), interval 0 hour)
|
|
|
|
|
|
2004-12-30 00:00:00
|
|
|
|
|
|
select timediff(cast('2004-12-30 12:00:00' as time), '12:00:00');
|
|
|
|
|
|
timediff(cast('2004-12-30 12:00:00' as time), '12:00:00')
|
|
|
|
|
|
00:00:00
|
|
|
|
|
|
select timediff(cast('1 12:00:00' as time), '12:00:00');
|
|
|
|
|
|
timediff(cast('1 12:00:00' as time), '12:00:00')
|
|
|
|
|
|
24:00:00
|
2005-02-21 16:20:05 +01:00
|
|
|
|
select cast('1.2' as decimal(3,2));
|
|
|
|
|
|
cast('1.2' as decimal(3,2))
|
|
|
|
|
|
1.20
|
|
|
|
|
|
select 1e18 * cast('1.2' as decimal(3,2));
|
|
|
|
|
|
1e18 * cast('1.2' as decimal(3,2))
|
|
|
|
|
|
1.2e+18
|
|
|
|
|
|
select cast(cast('1.2' as decimal(3,2)) as signed);
|
|
|
|
|
|
cast(cast('1.2' as decimal(3,2)) as signed)
|
|
|
|
|
|
1
|
|
|
|
|
|
set @v1=1e18;
|
|
|
|
|
|
select cast(@v1 as decimal(22, 2));
|
|
|
|
|
|
cast(@v1 as decimal(22, 2))
|
|
|
|
|
|
1000000000000000000.00
|
|
|
|
|
|
select cast(-1e18 as decimal(22,2));
|
|
|
|
|
|
cast(-1e18 as decimal(22,2))
|
|
|
|
|
|
-1000000000000000000.00
|
2005-03-07 17:53:51 +01:00
|
|
|
|
create table t1(s1 time);
|
|
|
|
|
|
insert into t1 values ('11:11:11');
|
|
|
|
|
|
select cast(s1 as decimal(7,2)) from t1;
|
|
|
|
|
|
cast(s1 as decimal(7,2))
|
|
|
|
|
|
111111.00
|
|
|
|
|
|
drop table t1;
|
