mysql - 显示列数相等的两个表中的记录

Question

假设在表 A 中，我的帐户下有EID (2,3,4)，在表 B 中，我想显示所有DEP 等于 EID 的记录.

谢谢，

表A

        ++++++++++++++++++++++++++
           id   |   EID  |   EC  |
        ++++++++++++++++++++++++++
           1    |    2   |   M   +
           2    |    2   |   Y   +
           3    |    3   |   S   +
           4    |    3   |   Q   +
           5    |    4   |   L   +
           6    |    5   |   I   +
        ++++++++++++++++++++++++++

表B

        ++++++++++++++++++++++++++
           A    |    B   |  DEP  |
        ++++++++++++++++++++++++++
           1    |    2   |   2   +
           2    |    2   |   2   +
           3    |    3   |   3   +
           4    |    3   |   3   +
           5    |    4   |   4   +
           6    |    5   |   5   +
        ++++++++++++++++++++++++++

这是我想要实现的输出。

        ++++++++++++++++++++++++++
          Results                |
        ++++++++++++++++++++++++++
           1    |    2   |   2   +
           2    |    2   |   2   +
           3    |    3   |   3   +
           4    |    3   |   3   +
           5    |    4   |   4   +
        ++++++++++++++++++++++++++

Answer 1

我的账户下有 EID (2,3,4)

select distinct B.A, B.B, A.EID  
from TableB B
inner join TableA A on A.EID=B.DEP
where A.EID in (2,3,4)

SQL FIDDLE