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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 Extra
1 SIMPLE t1 const UNIQ UNIQ 8 const 1
Warnings:
Note 1003 select test.t1.ID AS `ID`,test.t1.UNIQ AS `UNIQ` from test.t1 where (test.t1.UNIQ = 4084688022709641610)
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;
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