清空、删除数据

//清空数据，清空表中数据

truncate table user

//删除某字段='XXXX'的数据

delete from login  where uid='xxxx';


//删除指定行的数据
delete from login where time>='2016-6-18 0:00:00' order by time limit 10;   //删除前面的10条数据