mysql模糊查询语句like与not like的使用与区别,mysql模糊查询like的用法
查询user表中姓名中有“李”字的:
select * from user where name like '%李%'
mysql模糊查询not like的用法
查询user表中姓名中没有“李”字的:
select * from user where name not like '%李%'
查询user表中地址在上海姓名中没有“李”字和所有姓名为空的:
select * from user where adress =‘上海’ and name not like '%李%' or name is null
查询user表中地址在上海姓名中没有“李”字和地址在上海姓名为空的:
select * from user where adress =‘上海’ and (name not like '%李%' or name is null)