Question

我有以下功能：

    CREATE FUNCTION [dbo].[SuiviRupture](@CodeArticle [nvarchar](13),@CodeSite [nvarchar](5) ,@CodeStructure [nvarchar](13))
    RETURNS @calcul TABLE 
    (
        [Code Article]     [nvarchar](13),
         [Code Structure][nvarchar](13) NULL,
          [Code Site][nvarchar](5) NULL,
          CAMOY float,

            QTEMOY float

    )
    AS 
    BEGIN

    DECLARE @Temp TABLE
       (
            [datecol]   date,
            [Code Article]     [nvarchar](13),
            [Prix de vente TTC] [nvarchar](15) NULL,

            [Code Site][nvarchar](5) NULL,
            [Code Structure][nvarchar](13) NULL,
            Quantité float ,
            rn int
        );


insert into @Temp
    ([datecol],[Code Article],[Prix de vente TTC],[Code Site],[Code Structure],Quantité,rn)

     select t1.[datecol],t1.[Code Article],t1.[Prix de vente TTC],t1.[Code Site],t1.[Code Structure],t1.Quantité ,rn
          from [Vente] t1
          inner join (select distinct [datecol],[Code Article],[Code Structure],[Code Site],
          row_number() over(Partition by  [Code Article],[Code Structure],[Code Site] order by [datecol]desc ) as rn

          from (select distinct  [datecol],[Code Article],[Code Structure],[Code Site]
               from [Vente] t2
                where promo = 0
                and ([Code Article] is not null) and ([Code Structure] is not null) and ([Prix de Revient] is not null )and  [Code Article]= @CodeArticle and [Code Site]=@CodeSite and [Code Structure]=@CodeStructure
        )g
              ) a
               on a.datecol=t1.datecol
                and t1.[Code Article] = a.[Code Article]
                and t1.[Code Structure]=a.[Code Structure]
                and t1.[Code Site]=a.[Code Site]
                where promo = 0 --and  t1.[Code Article]= '    020130180'  
                and  rn <= 28

       INSERT @calcul 
    select 
          [Code Article]
          ,[Code Structure]
          ,[Code Site]
         , sum(convert(float,Quantité))/count(distinct [datecol])  as QTEMOY
        ,  sum(convert(float,[Prix de vente TTC])) / count(distinct [datecol]) AS CAMOY
    from @Temp
    where   [Code Article]= @CodeArticle and [Code Site]=@CodeSite and [Code Structure]=@CodeStructure
    group by
          [Code Article],[Code Structure]
          ,[Code Site]
     RETURN;
    END;


    GO

当我执行以下查询时，执行时间太长，需要几个小时如何优化它？

 select  t1.[Code Article],t1.[Code Site],t1.[Code Structure], u.QTEMOY,u.CAMOY
      from V_distinctVente t1  With(nolock)
      Cross apply dbo.[SuiviRupture](t1.[Code Article],t1.[Code Site],t1.[Code Structure]) u

Answer 1

在不知道实际背景的情况下很难复制。您可以将此查询放在sql analyzer中，并尝试在那里进行更改。

Answer 2

实际上你正在使用永远不会像存储过程那样预编译的函数。使用存储过程然后你可以提升性能.Store过程编译查询并将结果保存在sql server中的执行计划中。此链接可能有助于link

选择查询需要很长时间才能执行

2 个答案: