集團通過列在SQL

Question

我有SQL表稱爲EmpTBL，它包含的數據爲：

ID Emp_ID Dept Role_ID Status 
82 E00004 D1  3  1   
82 E00004 D2  3  1 
83 E00034 E2  1  1 
84 E00043 G1  2  1 
84 E00043 G2  2  1 
84 E00043 G3  2  1 
76 E01053 A1  1  1 

我需要編寫一個查詢，團體多達Emp_ID和顯示Dept作爲

ID Emp_ID Dept  Role_ID Status 
82 E00004 D1, D2  3  1 
83 E00034 E2   1  1 
84 E00043 G1, G2, G3 2  1 
76 E01053 A1   1  1 

Answer 1

CREATE TABLE #EmpTbl(ID INT, Emp_ID VARCHAR(100), Dept VARCHAR(100),Role_ID INT, Status INT) 

    INSERT INTO #EmpTbl(ID , Emp_ID , Dept ,Role_ID , Status) 
    SELECT 82,'E00004','D1',3,1 UNION ALL   
    SELECT 82,'E00004','D2',3,1 UNION ALL 
    SELECT 83,'E00034','E2',1,1 UNION ALL 
    SELECT 84,'E00043','G1',2,1 UNION ALL 
    SELECT 84,'E00043','G2',2,1 UNION ALL 
    SELECT 84,'E00043','G3',2,1 UNION ALL 
    SELECT 76,'E01053','A1',1,1 

    SELECT DISTINCT T1.ID,T1.Emp_ID,A.Dept,T1.Role_ID,T1.Status 
    FROM #EmpTbl T1 
    JOIN 
    (
    SELECT Emp_ID ,STUFF((SELECT ',' + Dept FROM #EmpTbl T3 WHERE T3.Emp_ID = T2.Emp_ID 
    FOR XML PATH('')),1,1,'') Dept 
    FROM #EmpTbl T2 
    GROUP BY Emp_ID 
    ) A ON A.Emp_ID = T1.Emp_ID' 

Answer 2

試試這個：

SELECT ID, Emp_ID, Dept = STUFF((SELECT ', ' + Dept 
    FROM EmpTBL AS e2 
    WHERE e2.Emp_ID = e1.Emp_ID 
    ORDER BY Dept 
    FOR XML PATH('')), 1, 1, ''), Role_ID, Status 
FROM EmpTBL AS e1 
GROUP BY Emp_ID 
ORDER BY Emp_ID