寻找SQL加入

Question

我有两个表格，分别是Educational_Info和Employee_Info。这些表的详细信息如下。

表：Educational_Info

DegreeID DegreeName
1 BBA
2 BCA
3 MBA
4 MCA

表：Employee_Info

EmpID BachelorDegree MasterDegree

1001 2 4

期望的输出：

EmpID BachelorDegree MasterDegree
1001 BCA MCA

如何获得所需的输出。如果不能使用此表结构，请以任何其他方式建议我。

提前致谢。

Answer 1

SELECT E.Empid,EI1.DegreeName,EI2.DegreeName 
FROM Employee_info E 
  INNER JOIN Educational_Info EI1 ON E.BachelorDegree=EI1.Degreeid
  INNER JOIN Educational_Info EI2 ON E.MasterDegree=EI2.Degreeid

Answer 2

这个。这给你一些想法

select b.EmpID,a.DegreeName
FROM Educational_Info a
JOIN Employee_Info b on b.BachelorDegree = a.DegreeID or b.MasterDegree = a.DegreeID