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mysql三表连接查询有关问题
- WBOYOriginal
- 2016-06-13 11:34:261011browse
mysql三表连接查询问题
三表左连接查询，为何会出现重复数据，有木有大神讲解一下原因啦啦啦啦！比如现在我单独查询有九条记录，但是还需要其他附属表的字段，结果连接查询出现重复数据，总数也是九条，这是神马情况啊？
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