小编use*_*710的帖子

在将我们的一个数据库从 SQL Server 2012 (SP1, CU2) 迁移到 SQL Server 2014 (SP1) 的过程中，我们遇到了一些奇怪的问题。

在 SQL Server 2012 上几秒钟内完成的查询之一似乎挂在 SQL Server 2014 上。

SELECT  DISTINCT 
    src.[Id]
FROM
    [stg].[BaseVolumes] src
JOIN     
    [tmp].[Dates] d ON src.[CalWeek_Nmbr] = d.[CalYrWkDense_Nmbr]
WHERE   
    EXISTS (SELECT  *
            FROM    
                (SELECT     ctry.[ISOCode]                  AS  [Mkt_Code]
                            , so.[Code]                     AS  [SlsOrg_Code_AK]
                            , so.[DistributionChannelCode]  AS  [DistChnl_Code_AK]
                            , prd.[SupplierCode]                AS  [SKU_Code_AK]
                            , cl6.[Code]                        AS  [CstHierLvl06_Code_AK]
                            , lp.[BaseDateID]                   AS  [Dte_EK]
                 FROM   [PM_APP].[edw].[BaseVolumeDayCurrent]   lp
                 JOIN   [PM_APP].[dbo].[Country]                ctry    ON  lp.[CountryID] = ctry.[ID]
                 JOIN   [PM_APP].[dbo].[SalesOrganisation]      so      ON  lp.[SalesOrganisationID] = so.[ID] …