Question

我所拥有的是 4个单独的SELECT个查询，并且它们具有相同的数据。因此，我想将这些数据合并到 ONE 临时表中。

如何：

首先将4个表合并到一个表中
然后是SUM（）列

如下图所示。我已经尝试但它没有用。

Merge

SQL：

DECLARE @Plants TABLE
(
    PlantName nvarchar(30),
    MaterialTotalPrice DECIMAL,
    SumLaborCost DECIMAL,
    FinalCost DECIMAL
)

DECLARE @MaterialTotalPrice DECIMAL
DECLARE @SumLaborCost DECIMAL
DECLARE @FinalCost DECIMAL

SELECT
    @MaterialTotalPrice = SUM(GetTotalPrice.[MaterialTotalPrice])
    ,@SumLaborCost = SUM(GetTotalPrice.[SumLaborCost])
    ,@FinalCost = SUM(GetTotalPrice.[FinalCost])
FROM
(

    SELECT
        TotalPriceMP4.[PlantName]
        ,SUM(TotalPriceMP4.[MaterialTotalPrice]) AS 'MaterialTotalPrice'
        ,SUM(TotalPriceMP4.[SumLaborCost]) AS 'SumLaborCost'
        ,SUM(TotalPriceMP4.[FinalCost]) AS 'FinalCost'
    FROM Invoice1 AS TotalPriceMP4
    GROUP BY TotalPriceMP4.[PlantName]

    SELECT
        TotalPriceMP4.[PlantName]
        ,SUM(TotalPriceMP4.[MaterialTotalPrice]) AS 'MaterialTotalPrice'
        ,SUM(TotalPriceMP4.[SumLaborCost]) AS 'SumLaborCost'
        ,SUM(TotalPriceMP4.[FinalCost]) AS 'FinalCost'
    FROM Invoice2 AS TotalPriceMP4
    GROUP BY TotalPriceMP4.[PlantName]

    SELECT
        TotalPriceMP4.[PlantName]
        ,SUM(TotalPriceMP4.[MaterialTotalPrice]) AS 'MaterialTotalPrice'
        ,SUM(TotalPriceMP4.[SumLaborCost]) AS 'SumLaborCost'
        ,SUM(TotalPriceMP4.[FinalCost]) AS 'FinalCost'
    FROM Invoice3 AS TotalPriceMP4
    GROUP BY TotalPriceMP4.[PlantName]

    SELECT
        TotalPriceMP4.[PlantName]
        ,SUM(TotalPriceMP4.[MaterialTotalPrice]) AS 'MaterialTotalPrice'
        ,SUM(TotalPriceMP4.[SumLaborCost]) AS 'SumLaborCost'
        ,SUM(TotalPriceMP4.[FinalCost]) AS 'FinalCost'
    FROM Invoice4 AS TotalPriceMP4
    GROUP BY TotalPriceMP4.[PlantName]

) AS GetTotalPrice
INSERT INTO @Plants(PlantName, MaterialTotalPrice, SumLaborCost, FinalCost) VALUES ('P4', ISNULL(@MaterialTotalPrice,0), ISNULL(@SumLaborCost,0), ISNULL(@FinalCost,0))
SELECT * FROM @Plants

Answer 1

您只需将UNION结果合并在一起，将这些（相同的）结果集合并为一个。

DECLARE @Plants TABLE
(
    PlantName nvarchar(30),
    MaterialTotalPrice DECIMAL,
    SumLaborCost DECIMAL,
    FinalCost DECIMAL
)

DECLARE @MaterialTotalPrice DECIMAL
DECLARE @SumLaborCost DECIMAL
DECLARE @FinalCost DECIMAL

SELECT
    @MaterialTotalPrice = SUM(GetTotalPrice.[MaterialTotalPrice])
    ,@SumLaborCost = SUM(GetTotalPrice.[SumLaborCost])
    ,@FinalCost = SUM(GetTotalPrice.[FinalCost])
FROM
(
    SELECT
        TotalPriceMP4.[PlantName]
        ,SUM(TotalPriceMP4.[MaterialTotalPrice]) AS 'MaterialTotalPrice'
        ,SUM(TotalPriceMP4.[SumLaborCost]) AS 'SumLaborCost'
        ,SUM(TotalPriceMP4.[FinalCost]) AS 'FinalCost'
    FROM Invoice1 AS TotalPriceMP4
    GROUP BY TotalPriceMP4.[PlantName]
    UNION
    SELECT
        TotalPriceMP4.[PlantName]
        ,SUM(TotalPriceMP4.[MaterialTotalPrice]) AS 'MaterialTotalPrice'
        ,SUM(TotalPriceMP4.[SumLaborCost]) AS 'SumLaborCost'
        ,SUM(TotalPriceMP4.[FinalCost]) AS 'FinalCost'
    FROM Invoice2 AS TotalPriceMP4
    GROUP BY TotalPriceMP4.[PlantName]
    UNION
    SELECT
        TotalPriceMP4.[PlantName]
        ,SUM(TotalPriceMP4.[MaterialTotalPrice]) AS 'MaterialTotalPrice'
        ,SUM(TotalPriceMP4.[SumLaborCost]) AS 'SumLaborCost'
        ,SUM(TotalPriceMP4.[FinalCost]) AS 'FinalCost'
    FROM Invoice3 AS TotalPriceMP4
    GROUP BY TotalPriceMP4.[PlantName]
    UNION
    SELECT
        TotalPriceMP4.[PlantName]
        ,SUM(TotalPriceMP4.[MaterialTotalPrice]) AS 'MaterialTotalPrice'
        ,SUM(TotalPriceMP4.[SumLaborCost]) AS 'SumLaborCost'
        ,SUM(TotalPriceMP4.[FinalCost]) AS 'FinalCost'
    FROM Invoice4 AS TotalPriceMP4
    GROUP BY TotalPriceMP4.[PlantName]

) AS GetTotalPrice
INSERT INTO @Plants(PlantName, MaterialTotalPrice, SumLaborCost, FinalCost) VALUES ('P4', ISNULL(@MaterialTotalPrice,0), ISNULL(@SumLaborCost,0), ISNULL(@FinalCost,0))
SELECT * FROM @Plants

如何使用SUM（）并使用SQL将表合并到一个表中

1 个答案: