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in Technique[技术] by (71.8m points)

mysql 按照分组的进行limit限制

有一张留言表还有一张评论表,现在想要获取留言的列表和每条留言下最多两条评论的业务逻辑,请问有没有比较优化的sql写法?

留言表:message

字段描述
id主键
content留言内容

评论表:comment

字段描述
id主键
message_id留言表外键
content评论内容

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by (71.8m points)

如果一次取出来的 message 不多的话,程序循环查吧。


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