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