sql - SQL Sum Column before inserting into #temp

Question

In my SPROC a table named #temp1 contains the following columns:

#temp1 (StoreId, StoreDesc, ReservedQty, AvgPrice, QtyOnHand)

My question is based on the following query

INSERT INTO #temp2 (StoreId, StoreDesc, CommittedQty)
(SELECT     StoreId,  StoreDesc, 
    CASE WHEN ReservedQty > QtyOnHand THEN
        sum(QtyOnHand * AvgPrice) 
    ELSE
        sum(ReservedQty * AvgPrice) 
    END AS CommittedQty
    FROM #temp1 
    GROUP BY StoreId, StoreDesc, QtyOnHand, ReservedQty)

A sample result set looks like this:

StoreId                 StoreDesc   CommittedQty    
C4ED0D8B-22CF-40FE-8EF9-7FD764310C94    FramersBranch   0
C4ED0D8B-22CF-40FE-8EF9-7FD764310C94    FarmersBranch   88978
C4ED0D8B-22CF-40FE-8EF9-7FD764310C94    FarmersBranch   0
C4ED0D8B-22CF-40FE-8EF9-7FD764310C94    FarmersBranch   3152
6369D3A6-83BC-4BB0-9A25-86838CD2B7BA    Woodlands   5582
6369D3A6-83BC-4BB0-9A25-86838CD2B7BA    Woodlands   389

Unfortunatly since I have to GROUP BY the QtyOnHand & ReservedQty columns in my CASE statement I get multiple rows for each StoreId.

I would like to know if there is a simple way for me to sum the results (again) based on the CommittedQty so that I may get the following result set I desire:

StoreId v               StoreDesc   CommittedQty    
C4ED0D8B-22CF-40FE-8EF9-7FD764310C94    FramersBranch   92130
6369D3A6-83BC-4BB0-9A25-86838CD2B7BA    Woodlands   5971

I realize I could use another temp table but wondered if there was an easier way to accomplish this inside the SELECT statement

score 2 · Accepted Answer

SELECT  StoreId,  StoreDesc, 
        SUM(
        CASE
        WHEN ReservedQty > QtyOnHand THEN
                QtyOnHand * AvgPrice 
        ELSE
                ReservedQty * AvgPrice
        END
        ) AS CommittedQty
FROM    #temp1 
GROUP BY
        StoreId, StoreDesc

score 1 · Accepted Answer

首先要做的事情是：如果您可以避免使用#temp 和##temp 表，那么您应该这样做。它们是导致全球变暖和山洪暴发的邪恶讨厌的小东西，是各种温室气体排放的罪魁祸首。（：

开个玩笑，除非绝对必要，否则请摆脱临时表并在必要时将其替换为子查询。

您可以简单地围绕此语句包装另一个选择

INSERT INTO #temp2 (StoreId, StoreDesc, CommittedQty)
SELECT StoreId, StoreDesc, Sum (CommittedQty)
FROM 
(SELECT         StoreId,  StoreDesc, 
        CASE WHEN ReservedQty > QtyOnHand THEN
                sum(QtyOnHand * AvgPrice) 
        ELSE
                sum(ReservedQty * AvgPrice) 
        END AS CommittedQty
        FROM #temp1 
        GROUP BY StoreId, StoreDesc, QtyOnHand, ReservedQty)
)
GROUP BY StoreId, StoreDesc

score 1 · Accepted Answer

I wouldn't use a temp table. My guess is that you're already using at least one too many :)

You need to put the SUM around your whole CASE statement:

SUM(AvgPrice *
     CASE
          WHEN ReservedQty > QtyOnHand THEN QtyOnHand
          ELSE ReservedQty
     END)

sql - SQL Sum Column before inserting into #temp

3 回答 3

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