select a.askid,a.title,GROUP_CONCAT(b.message SEPARATOR '----') as content from gg_ask as a join gg_ask_posts as b
on a.askid=b.askid GROUP BY a.askid;
本文介绍了一种使用SQL进行数据聚合查询的方法,通过一个具体的例子展示了如何从多个相关表中获取并整合信息。
select a.askid,a.title,GROUP_CONCAT(b.message SEPARATOR '----') as content from gg_ask as a join gg_ask_posts as b
on a.askid=b.askid GROUP BY a.askid;
转载于:https://www.cnblogs.com/linuxOS/p/4423958.html
1257

被折叠的 条评论
为什么被折叠?