多查詢到單個查詢

Question

我與SQL Server 2008工作

我創造了這樣一個存儲過程：

SELECT SUM(m.BookingAmt) + SUM(m.FormFee) AS 'SIP' 
FROM dbo.Member AS m 
    INNER JOIN dbo.PlanMaster AS pm ON m.PlanId = pm.PlanId 
    INNER JOIN dbo.PlanTypeMaster AS ptm ON pm.PlanTypeId = ptm.PlanTypeId 
WHERE ptm.IsSingleInstallment = 'true' 
    AND m.CompanyId = @CompanyId 
    AND m.CscId = @CscId 
    AND m.CommencementDate = @Date 

SELECT SUM(i.PaymentAmt) + SUM(m.FormFee) AS 'Fresh' 
FROM dbo.Installment AS i 
    INNER JOIN dbo.Member AS m ON i.MemberId = m.MemberId 
    INNER JOIN dbo.PlanMaster AS pm ON i.PlanId = pm.PlanId 
    INNER JOIN dbo.PlanTypeMaster AS ptm ON pm.PlanTypeId = ptm.PlanTypeId 
WHERE i.InstallmentNo = 1 
    AND m.CompanyId = @CompanyId 
    AND m.CscId = @CscId 
    AND i.PaymentDate = @Date 
    AND ptm.IsSingleInstallment = 'false' 

SELECT SUM(i.PaymentAmt) AS '1stYear' 
FROM dbo.Installment AS i 
    INNER JOIN dbo.Member AS m ON i.MemberId = m.MemberId 
WHERE i.InstallmentNo > 1 
    AND i.InstallmentNo < 13 
    AND m.CompanyId = @CompanyId 
    AND m.CscId = @CscId 
    AND i.PaymentDate = @Date 


SELECT SUM(i.PaymentAmt) AS '2ndYear' 
FROM dbo.Installment AS i 
    INNER JOIN dbo.Member AS m ON i.MemberId = m.MemberId 
WHERE i.InstallmentNo > 12 
    AND i.InstallmentNo < 25 
    AND m.CompanyId = @CompanyId 
    AND m.CscId = @CscId 
    AND i.PaymentDate = @Date 

SELECT SUM(i.PaymentAmt) AS '3rdYear' 
FROM dbo.Installment AS i 
    INNER JOIN dbo.Member AS m ON i.MemberId = m.MemberId 
WHERE i.InstallmentNo > 24 
    AND i.InstallmentNo < 37 
    AND m.CompanyId = @CompanyId 
    AND m.CscId = @CscId 
    AND i.PaymentDate = @Date 

SELECT SUM(i.PaymentAmt) AS '4thYear' 
FROM dbo.Installment AS i 
    INNER JOIN dbo.Member AS m ON i.MemberId = m.MemberId 
WHERE i.InstallmentNo > 36 
    AND m.CompanyId = @CompanyId 
    AND m.CscId = @CscId 
    AND i.PaymentDate = @Date 

，但我想造成這樣的... ...

--------------------------------------------------------------------- 
    Date  | SIP | Fresh | 1stYear | 2ndYear | 3rdYear | 4thYear | 
--------------------------------------------------------------------- 
    01/02/2013 | 2000 | 2500 | 5000 | 3500 | 4500 | 6500 | 
------------------------------------------------------- -------------- 
    02/02/2013 | 6500 | 5000 | 1500 | 4500 | 3520 | 1852 | 
    -------------------------------------------------------------------- 
    03/02/2013 | 2560 | 2500 | 3500 | 4500 | 2000 | 2000 | 

如何使用一個查詢獲得以上結果？請幫幫我。謝謝

Answer 1

您可以合併生成1stYear，2ndYear等的查詢，方法是使用具有CASE表達式的聚合函數創建列而不是行。

然後，您可以爲其他兩個子查詢創建子查詢，最後在日期將它們連接在一起。所以你的最終查詢可能是：

SELECT coalesce(q1.CommencementDate, q2.PaymentDate, q3.PaymentDate) date, 
    q1.SIP, 
    q2.Fresh, 
    q3.[1stYear], 
    q3.[2ndYear], 
    q3.[3rdYear], 
    q3.[4thYear] 
FROM 
(
    SELECT m.CommencementDate, 
    SUM(m.BookingAmt) + SUM(m.FormFee) AS 'SIP' 
    FROM dbo.Member AS m 
    INNER JOIN dbo.PlanMaster AS pm 
    ON m.PlanId = pm.PlanId 
    INNER JOIN dbo.PlanTypeMaster AS ptm 
    ON pm.PlanTypeId = ptm.PlanTypeId 
    WHERE ptm.IsSingleInstallment = 'true' 
    AND m.CompanyId = @CompanyId 
    AND m.CscId = @CscId 
    AND m.CommencementDate = @Date 
) q1 
FULL OUTER JOIN 
(
    SELECT i.PaymentDate, 
    SUM(i.PaymentAmt) + SUM(m.FormFee) AS 'Fresh' 
    FROM dbo.Installment AS i 
    INNER JOIN dbo.Member AS m 
    ON i.MemberId = m.MemberId 
    INNER JOIN dbo.PlanMaster AS pm 
    ON i.PlanId = pm.PlanId 
    INNER JOIN dbo.PlanTypeMaster AS ptm 
    ON pm.PlanTypeId = ptm.PlanTypeId 
    WHERE i.InstallmentNo = 1 
    AND m.CompanyId = @CompanyId 
    AND m.CscId = @CscId 
    AND i.PaymentDate = @Date 
    AND ptm.IsSingleInstallment = 'false' 
) q2 
    ON q1.CommencementDate = q2.PaymentDate 
FULL OUTER JOIN 
(
    SELECT i.PaymentDate, 
    sum(case 
      when i.InstallmentNo > 1 AND i.InstallmentNo < 13 
      then i.PaymentAmt else 0 end) AS [1stYear], 
    sum(case 
      when i.InstallmentNo > 12 AND i.InstallmentNo < 25 
      then i.PaymentAmt else 0 end) AS [2ndYear], 
    sum(case 
      when i.InstallmentNo > 24 AND i.InstallmentNo < 37 
      then i.PaymentAmt else 0 end) AS [3rdYear], 
    sum(case 
      when i.InstallmentNo > 36 
      then i.PaymentAmt else 0 end) AS [4thYear] 
    SUM(i.PaymentAmt) AS '1stYear' 
    FROM dbo.Installment AS i 
    INNER JOIN dbo.Member AS m 
    ON i.MemberId = m.MemberId 
    WHERE m.CompanyId = @CompanyId 
    AND m.CscId = @CscId 
    AND i.PaymentDate = @Date 
    GROUP BY i.PaymentDate 
) q3 
    ON q1.CommencementDate = q3.PaymentDate;