摘要: mysql,A用户表,B留言表,查询留言数大于10条记录的用户名,留言数量 :select u.name,count(*) as total from user as u inner join message as m on u.user_id=m.user_id group by u.name h 阅读全文
posted @ 2017-06-01 21:15 datang6777 阅读(196) 评论(0) 推荐(0) 编辑