我有一个表有用户ID,另一个表有AD组;某些AD组会告诉您客户端是否是VIP,Pilot,Remote Access等组的成员。
当尝试创建一个视图来显示客户端所属的这些组中的哪一个时,我遇到了必须为每个组名创建单独的连接的问题,因为不这样做会在结果中创建重复项。
Table One
Client_ID Client_Name
--------- ------------
A ABC
D DEF
G GHI
Table Two:
Client_ID AD_Group
--------- --------
A I_GroupX
A GroupY
D B_GroupX
D GroupZ
G GroupY
G GroupZ
Result Table:
Client_ID Client_Name VIP(X) Pilot(Y) RemoteAccess(Z)
--------- ----------- ------ -------- -----------
A ABC I_GroupX GroupY Not Member
D DEF Not Member GroupY GroupZ
G GHI B_GroupX Not Member GroupZ
这可行,但必须为每个组创建一个而不是在一个视图中创建一个:
SELECT Client_ID,
,Client_Name
,[VIP] = CASE
WHEN A.GroupX IS NULL THEN 'Not Member'
ELSE A.AD_Group
END
FROM Table1 LEFT OUTER JOIN
(SELECT [Client_ID]
,[AD_Group]
FROM Table2
WHERE [AD_Group] LIKE '%GroupX') A
ON Client_ID = A.Client_ID
提前致谢
答案 0 :(得分:1)
SELECT Client_ID, Client_Name,
[VIP(X)] = ISNULL((select AD_Group from Table2 where Client_Id = t1.Client_ID and AD_Group LIKE '%GroupX'), 'Not Member'),
[Pilot(Y)] = ISNULL((select AD_Group from Table2 where Client_Id = t1.Client_ID and AD_Group LIKE '%GroupY'), 'Not Member'),
[RemoteAccess(Z)] = ISNULL((select AD_Group from Table2 where Client_Id = t1.Client_ID and AD_Group LIKE '%GroupZ'), 'Not Member')
FROM Table1 t1