Mysql学习总结（25）——MySQL外连接查询

科技D人生发布时间：2016-07-08 13:43:16 ，浏览量：0

1、左外连接left outer join或者left jion，outer可以省略不写，下边的右连接和全连接也一样：

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Mysql学习总结（25）——MySQL外连接查询

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