mysql - 从两个不同的表中获取公共(public)数据

Question

您好，我有 2 个具有相同列名的表(Id、FName、LName、DOB、Type、Contact、Add)。

现在我想将所有数据作为一个单独的行获取，这些数据从两个表中按照 Fname 的顺序具有相同的 FName、LName 和 DOB。

我尝试使用 intersect 和 Union 但对我不起作用。

  Select * from #t1 where FirstName in (select FirstName from #t2 ) and LastName in  (select LastName from #t2 ) and DateOfBirth in (select DateOfBirth from #t2 ) 
 UNION
Select * from #t2 where FirstName in (select FirstName from #t1 ) and LastName in  (select LastName from #t1 ) and DateOfBirth in (select DateOfBirth from #t1 )      order by FirstName ,LastName

谢谢

Answer 1

我想这就可以了，但我相信还有更简洁的方法......

SELECT T1.*
FROM T1
INNER JOIN T2 
    ON T2.FirstName = T1.FirstName
    AND T2.LastName = T1.LastName
    AND T2.DateOfBirth = T1.DateOfBirth
UNION ALL
SELECT T2.*
FROM T2
INNER JOIN T1 
    ON T1.FirstName = T2.FirstName
    AND T1.LastName = T2.LastName
    AND T1.DateOfBirth = T2.DateOfBirth