Question

我如何结合所有2个查询，但是在我将所有查询合并之前还要对每个查询进行排序？我希望在结果按总和（[docextprice]）desc

订购后的每一年获得前20名的结果

这是我现在拥有的一个例子：

SELECT      top 20 gm.[partnum]
            ,p.PartDescription
            ,sum([docextprice])[docextprice]
            ,year([invoicedate])year
            ,'Eco Surfaces' product

FROM        dbo.gm gm
            JOIN dbo.Part p on gm.partnum = p.PartNum

WHERE       gm.company = 'EII' and [invoicedate] BETWEEN  '20100809' and '20101231'
            and p.ClassID in ('mpe') 


GROUP BY    year([invoicedate]),gm.[partnum],p.PartDescription
ORDER BY    year([invoicedate]),sum([docextprice]) desc

UNION ALL

SELECT      top 20 gm.[partnum]
            ,p.PartDescription
            --,gm.[prodcode]
            --,p.ClassID
            ,sum([docextprice])[docextprice]
            ,year([invoicedate])year
            ,'Eco Surfaces' product

FROM        dbo.gm gm
            JOIN dbo.Part p on gm.partnum = p.PartNum

WHERE       gm.company = 'EII' and [invoicedate] BETWEEN  '20110101' and '20111231'
            and p.ClassID in ('mpe') 


GROUP BY    year([invoicedate]),gm.[partnum],p.PartDescription
ORDER BY    year([invoicedate]),sum([docextprice]) desc

显然，这个查询不会赢，因为您无法在联接的两边订购。

Answer 1

您可以通过使用公用表表达式来保存结果，然后将它们合并在一起：

WITH    cte1
          AS ( SELECT TOP 20
                        gm.[partnum] ,
                        p.PartDescription ,
                        SUM([docextprice]) [docextprice] ,
                        YEAR([invoicedate]) year ,
                        'Eco Surfaces' product
               FROM     dbo.gm gm
                        JOIN dbo.Part p ON gm.partnum = p.PartNum
               WHERE    gm.company = 'EII'
                        AND [invoicedate] BETWEEN '20100809' AND '20101231'
                        AND p.ClassID IN ( 'mpe' )
               GROUP BY YEAR([invoicedate]) ,
                        gm.[partnum] ,
                        p.PartDescription
               ORDER BY YEAR([invoicedate]) ,
                        SUM([docextprice]) DESC
             ),
        cte2
          AS ( SELECT TOP 20
                        gm.[partnum] ,
                        p.PartDescription
                        --,gm.[prodcode]
                        --,p.ClassID
                        ,
                        SUM([docextprice]) [docextprice] ,
                        YEAR([invoicedate]) year ,
                        'Eco Surfaces' product
               FROM     dbo.gm gm
                        JOIN dbo.Part p ON gm.partnum = p.PartNum
               WHERE    gm.company = 'EII'
                        AND [invoicedate] BETWEEN '20110101' AND '20111231'
                        AND p.ClassID IN ( 'mpe' )
               GROUP BY YEAR([invoicedate]) ,
                        gm.[partnum] ,
                        p.PartDescription
               ORDER BY YEAR([invoicedate]) ,
                        SUM([docextprice]) DESC
             )
    SELECT  *
    FROM    cte1
    UNION ALL
    SELECT  *
    FROM    cte2

Answer 2

您可以在没有UNION的情况下执行此操作：

;WITH CTE1 AS
(
    SELECT      gm.[partnum]
                ,p.PartDescription
                ,sum([docextprice])[docextprice]
                ,year([invoicedate]) [year]
                ,'Eco Surfaces' product

    FROM        dbo.gm gm
                JOIN dbo.Part p on gm.partnum = p.PartNum

    WHERE       gm.company = 'EII' 
    and [invoicedate] BETWEEN  '20100809' and '20111231'
                and p.ClassID in ('mpe') 
    GROUP BY    year([invoicedate]),gm.[partnum],p.PartDescription
), CTE2 AS
(
    SELECT  *,
            RN=ROW_NUMBER() OVER(PARTITION BY [year] ORDER BY [docextprice] DESC)
    FROM CTE1
)
SELECT *
FROM CTE2
WHERE RN <= 20

Answer 3

您应该可以在原始脚本的第一个查询中删除订单。您只能批量订购一个订单。

SELECT      top 20 gm.[partnum]
            ,p.PartDescription
            ,sum([docextprice])[docextprice]
            ,year([invoicedate])year
            ,'Eco Surfaces' product

FROM        dbo.gm gm
            JOIN dbo.Part p on gm.partnum = p.PartNum

WHERE       gm.company = 'EII' and [invoicedate] BETWEEN  '20100809' and '20101231'
            and p.ClassID in ('mpe') 


GROUP BY    year([invoicedate]),gm.[partnum],p.PartDescription


UNION ALL

SELECT      top 20 gm.[partnum]
            ,p.PartDescription
            --,gm.[prodcode]
            --,p.ClassID
            ,sum([docextprice])[docextprice]
            ,year([invoicedate])year
            ,'Eco Surfaces' product

FROM        dbo.gm gm
            JOIN dbo.Part p on gm.partnum = p.PartNum

WHERE       gm.company = 'EII' and [invoicedate] BETWEEN  '20110101' and '20111231'
            and p.ClassID in ('mpe') 


GROUP BY    year([invoicedate]),gm.[partnum],p.PartDescription
ORDER BY    year([invoicedate]),sum([docextprice]) desc

在订购每个查询时联合所有2个查询

3 个答案: