129 lines
3.3 KiB
Plaintext
129 lines
3.3 KiB
Plaintext
drop table if exists t1;
|
|
select 0x41,0x41+0,0x41 | 0x7fffffffffffffff | 0,0xffffffffffffffff | 0 ;
|
|
0x41 0x41+0 0x41 | 0x7fffffffffffffff | 0 0xffffffffffffffff | 0
|
|
A 65 9223372036854775807 18446744073709551615
|
|
select 0x31+1,concat(0x31)+1,-0xf;
|
|
0x31+1 concat(0x31)+1 -0xf
|
|
50 2 -15
|
|
select x'31',X'ffff'+0;
|
|
x'31' X'ffff'+0
|
|
1 65535
|
|
create table t1 (ID int(8) unsigned zerofill not null auto_increment,UNIQ bigint(21) unsigned zerofill not null,primary key (ID),unique (UNIQ) );
|
|
insert into t1 set UNIQ=0x38afba1d73e6a18a;
|
|
insert into t1 set UNIQ=123;
|
|
explain extended select * from t1 where UNIQ=0x38afba1d73e6a18a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 const UNIQ UNIQ 8 const 1 100.00
|
|
Warnings:
|
|
Note 1003 select '00000001' AS `ID`,'004084688022709641610' AS `UNIQ` from `test`.`t1` where 1
|
|
drop table t1;
|
|
select x'hello';
|
|
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'x'hello'' at line 1
|
|
select 0xfg;
|
|
ERROR 42S22: Unknown column '0xfg' in 'field list'
|
|
create table t1 select 1 as x, 2 as xx;
|
|
select x,xx from t1;
|
|
x xx
|
|
1 2
|
|
drop table t1;
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` varbinary(255) DEFAULT NULL,
|
|
`b` varchar(255) DEFAULT NULL
|
|
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
|
select length(a), length(b) from t1;
|
|
length(a) length(b)
|
|
255 3
|
|
255 3
|
|
CHECK TABLE t1 FOR UPGRADE;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check error Table upgrade required. Please do "REPAIR TABLE `t1`" or dump/reload to fix it!
|
|
REPAIR TABLE t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 repair status OK
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` varbinary(255) DEFAULT NULL,
|
|
`b` varchar(255) DEFAULT NULL
|
|
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
|
select length(a), length(b) from t1;
|
|
length(a) length(b)
|
|
3 3
|
|
3 3
|
|
insert into t1 values("ccc", "ddd");
|
|
select length(a), length(b) from t1;
|
|
length(a) length(b)
|
|
3 3
|
|
3 3
|
|
3 3
|
|
select hex(a), hex(b) from t1;
|
|
hex(a) hex(b)
|
|
616161 636363
|
|
626262 646464
|
|
636363 646464
|
|
select concat("'", a, "'"), concat("'", b, "'") from t1;
|
|
concat("'", a, "'") concat("'", b, "'")
|
|
'aaa' 'ccc'
|
|
'bbb' 'ddd'
|
|
'ccc' 'ddd'
|
|
drop table t1;
|
|
create table t1(a varbinary(255));
|
|
insert into t1 values("aaa ");
|
|
select length(a) from t1;
|
|
length(a)
|
|
6
|
|
alter table t1 modify a varchar(255);
|
|
select length(a) from t1;
|
|
length(a)
|
|
6
|
|
drop table t1;
|
|
drop table if exists table_28127_a;
|
|
drop table if exists table_28127_b;
|
|
create table table_28127_a(0b02 int);
|
|
show create table table_28127_a;
|
|
Table Create Table
|
|
table_28127_a CREATE TABLE `table_28127_a` (
|
|
`0b02` int(11) DEFAULT NULL
|
|
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
|
create table table_28127_b(0b2 int);
|
|
show create table table_28127_b;
|
|
Table Create Table
|
|
table_28127_b CREATE TABLE `table_28127_b` (
|
|
`0b2` int(11) DEFAULT NULL
|
|
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
|
drop table table_28127_a;
|
|
drop table table_28127_b;
|
|
select 0b01000001;
|
|
0b01000001
|
|
A
|
|
select 0x41;
|
|
0x41
|
|
A
|
|
select b'01000001';
|
|
b'01000001'
|
|
A
|
|
select x'41', 0+x'41';
|
|
x'41' 0+x'41'
|
|
A 65
|
|
select N'abc', length(N'abc');
|
|
abc length(N'abc')
|
|
abc 3
|
|
select N'', length(N'');
|
|
length(N'')
|
|
0
|
|
select '', length('');
|
|
length('')
|
|
0
|
|
select b'', 0+b'';
|
|
b'' 0+b''
|
|
0
|
|
select x'', 0+x'';
|
|
x'' 0+x''
|
|
0
|
|
select 0x;
|
|
ERROR 42S22: Unknown column '0x' in 'field list'
|
|
select 0b;
|
|
ERROR 42S22: Unknown column '0b' in 'field list'
|