MySql的like语句中的通配符：百分号、下划线和escape

MySql的like语句中的通配符：百分号、下划线和escape

%代表任意多个字符

Sql代码    www.2cto.com  

select * from user where username like '%huxiao';   

select * from user where username like 'huxiao%';   

select * from user where username like '%huxiao%';   

 _代表一个字符

Sql代码  

select * from user where username like '_';   

select * from user where username like 'huxia_';   

select * from user where username like 'h_xiao';   

 如果我就真的要查%或者_，怎么办呢？使用escape，转义字符后面的%或_就不作为通配符了，注意前面没有转义字符的%和_仍然起通配符作用

Sql代码  

select username from gg_user where username like '%xiao/_%' escape '/';   

select username from gg_user where username like '%xiao/%%' escape '/'