MySQL区分大小写的查询

mysql查询默认是不区分大小写的 如：

select * from table_name where a like 'a%'

select * from table_name where a like 'A%'

select * from table_name where a like 'a%'

select * from table_name where a like 'A%'

效果是一样的。

要让mysql查询区分大小写，可以：

select * from table_name where binary a like 'a%'

select * from table_name where binary a like 'A%'

select * from table_name where binary a like 'a%'

select * from table_name where binary a like 'A%'

也可以在建表时，加以标识

create table table_name(

a varchar(20) binary

}