摘要: 一、分组查询 1、group by: select * from car group by powers; 2、group by group_concat(字段名) : select powers,group_concat(name) from car group by powers; 3、grou 阅读全文
posted @ 2018-06-07 15:00 所爱隔山隔海 阅读(171) 评论(0) 推荐(0)
摘要: /*Navicat MySQL Data Transfer Source Server : localhostSource Server Version : 50617Source Host : localhost:3306Source Database : ceshi Target Server 阅读全文
posted @ 2018-06-07 11:55 所爱隔山隔海 阅读(442) 评论(0) 推荐(0)