Question

如何根据主表中的id从另一个表中选择另外两列？

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Answer 1

使用JOIN：

SELECT * FROM tbl_setup t1 
JOIN tbl_speciality t2
ON t1.app_idd = t2.t1_app_id

我不确定，但我认为您不能在MySQL列名中使用“$”而不会在以后遇到问题。

MySQL加入的一个很好的解释：

http://blog.codinghorror.com/a-visual-explanation-of-sql-joins/

如何根据主表中的id从另一个表中选择两个附加列？

1 个答案: