SQL INNER JOIN DISTINCT RESULT

Question

我有兩個表SelfAnswers和Employee。在執行以下查詢時：我想返回不同的結果。

SELECT s.Id,s.EmployeeId,e.NAME,e. Department 
      FROM SelfAnswers AS s Inner Join Employee As e ON s.EmployeeId=e.EmployeeId 

輸出是

Id EmployeeId NAME Department 
1 100   adam  Exam 
2 100   adam  Exam 
3 100   adam  Exam 
4 100   adam  Exam 
5 101   smith Exam 
6 101   smith Exam 
7 101   smith Exam 
8 101   smith Exam 

Answer 1

好了，查詢返回不同的結果。

如果你指的EmployeeId, NAME and Department，那麼你可以嘗試像

SELECT DISTINCT 
     s.EmployeeId, 
     e.NAME, 
     e. Department 
FROM SelfAnswers AS s Inner Join 
     Employee As e ON s.EmployeeId=e.EmployeeId