基於級聯

Question

SQL Server的新列我有這個疑問，其給出了這樣的結果：

DECLARE 

@CustomerID int = 8, 
@UtilityCompanyID int = 1 

SELECT MD.SERV_ACCT, AD.ACCOUNT, MD.SERV_ADDRESS 
FROM 
(SELECT DISTINCT SERV_ACCT, SERV_ADDRESS, MAX(INV_DATE) as MAXINVDATE 
FROM tblAPSData 

WHERE SERV_ACCT NOT IN (SELECT ServiceAccount 
      FROM tblMEP_Meters 
      JOIN tblMEP_Sites 
      ON tblMEP_Meters.SiteID = tblMEP_Sites.ID 

      JOIN tblMEP_Projects 
      ON tblMEP_Projects.ID = tblMEP_Sites.ProjectID 

      WHERE CustomerID = 8 
      AND Type = 1 
      ) 

AND ACCOUNT IN (SELECT AccountNumber 
       FROM tblMEP_CustomerAccounts 
       WHERE CustomerID = @CustomerID 
       AND UtilityCompanyID = @UtilityCompanyID) 

AND INV_DATE > DATEADD(month, -6, getdate()) 
GROUP BY SERV_ACCT, SERV_ADDRESS) MD 
join tblAPSdata AD on MD.SERV_ACCT = AD.SERV_ACCT 
and MD.MAXINVDATE = AD.INV_DATE 

結果：

SERV_ACCT ACCOUNT SERV_ADDRESS 
0289S61288 117512280 5250 E MONTGOMERY RD   
1435S01282 117512280 5801 E SEVEN PALMS LN   
2498S21288 117512280 27880 N 64 ST     
5538S21284 117512280 5802 E DOVE VALLEY RD   
6109S12286 117512280 5405 E PINNACLE VISTA DR  
7488S22289 117512280 5555 E PINNACLE VISTA DR  
8058S12287 117512280 5405 E PINNACLE VISTA DR  
9058S00288 117512280 33606 N 60 ST     
9645S21281 117512280 4322 E DESERT WILLOW PKWY  
1440S13289 312937281 2610 N WEST ST     
5384S92284 979437282 1701 E PONDEROSA PKWY   
0492S90281 117512280 33424 N 60 ST     
1303S90280 117512280 33401 N 56 ST     
1548S00286 117512280 33606 N 60 ST     
7358S00281 117512280 33606 N 60 ST     
9168S00282 117512280 33016 N 60 ST     

我想創建一個新列，這將是這樣的：

SERV_ACCT ACCOUNT   SERV_ADDRESS 
0289S61288 117512280 4324E MONT   0289S61288, 117512280, 4324E MONT 
1435S01282 117512280 432E SE    1435S01282, 117512280, 432E SE 
2498S21288 117512280 reN 64 ST   2498S21288, 117512280, reN 64 ST     
5538S21284 117512280 reE DOV    5538S21284, 117512280, reE DOV 

等等等等。基本上最後一列將是SERV_ACCT，ACCOUNT，SERV_ADDRESS 但我不知道該怎麼做。

Answer 1

只使用+爲SQL Server：

SELECT MD.SERV_ACCT, AD.ACCOUNT, MD.SERV_ADDRESS, 
    MD.SERV_ACCT + ', ' + AD.ACCOUNT + ', ' + MD.SERV_ADDRESS 
    ... 

這是假設的數據類型都是varchar()。如果不是，則需要使用CONVERT或CAST。例如，假設帳戶不是varchar()：

MD.SERV_ACCT + ', ' + CAST(AD.ACCOUNT as Varchar(Max)) + ', ' + MD.SERV_ADDRESS 

Answer 2

就像這樣。

SELECT MD.SERV_ACCT, AD.ACCOUNT, MD.SERV_ADDRESS, 
    MD.SERV_ACCT + ', ' + AD.ACCOUNT ', ' + MD.SERV_ADDRESS AS LasColumn 
FROM ....