Sql server 2008 当工作台假脱机有多个假脱机时，它指示什么

根据,

Table Spool操作符扫描输入，并将每一行的副本放置在一个隐藏的Spool表中，该表存储在tempdb数据库中，并且仅在查询的生存期内存在

首先，在这一步之前，计划中没有任何输入。。。这篇文章表明，它应该和网上说的一样多

滑阀操纵器始终与另一操纵器一起使用。当它存储值时，它需要知道这些值是什么，因此它必须从另一个操作符接收这些值

第二，当鼠标悬停在输出列表中包含多个表时。它们是否都被假脱机到单独的表中？如果是，为什么不显示多个步骤？如果它们都被假脱机到一个表中，它们是否在假脱机之前被合并？如果你愿意的话，把桌子弄平

第三，正如我在下面解释的，我想我对1和2有一个答案。。。但现在我看到原始步骤的成本%为0%，而在另一个分支中重新使用滑阀时，成本%为12%。为什么回读要比原来写出来花费更多

编辑：文本计划

StmtText
  |--Compute Scalar(DEFINE:([so].[SLS_ORG_OPR_UNT_SRC_KEY]=[Expr1021], [so].[SLS_ORG_PROD_SRC_KEY]=[Expr1022], [cal].[WEEK_END_DATE]=[Expr1023], [so].[SLS_ORG_EMPL_SRC_KEY]=[Expr1024], [so].[SLS_ORG_JOBCODE]=[Expr1025]))
       |--Hash Match(Inner Join, HASH:([Expr1021], [Expr1022], [Expr1023], [Expr1024], [Expr1025])=([Expr1016], [Expr1017], [Expr1018], [Expr1019], [Expr1020]), RESIDUAL:([Expr1016] = [Expr1021] AND [Expr1017] = [Expr1022] AND [Expr1018] = [Expr1023] AND [Expr1019] = [Expr1024] AND [Expr1020] = [Expr1025]))
            |--Compute Scalar(DEFINE:([Expr1021]=[DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_OPR_UNT_SRC_KEY] as [so].[SLS_ORG_OPR_UNT_SRC_KEY], [Expr1022]=[DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_PROD_SRC_KEY] as [so].[SLS_ORG_PROD_SRC_KEY], [Expr1023]=[DMRPT].[dbo].[DIM_CALENDAR].[WEEK_END_DATE] as [cal].[WEEK_END_DATE], [Expr1024]=[DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_EMPL_SRC_KEY] as [so].[SLS_ORG_EMPL_SRC_KEY], [Expr1025]=[DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_JOBCODE] as [so].[SLS_ORG_JOBCODE]))
            |    |--Compute Scalar(DEFINE:([Expr1011]=CONVERT_IMPLICIT(int,[Expr1059],0)))
            |         |--Stream Aggregate(GROUP BY:([so].[SLS_ORG_OPR_UNT_SRC_KEY], [so].[SLS_ORG_PROD_SRC_KEY], [cal].[WEEK_END_DATE], [so].[SLS_ORG_EMPL_SRC_KEY], [so].[SLS_ORG_JOBCODE]) DEFINE:([Expr1059]=COUNT([Expr1015])))
            |              |--Sort(DISTINCT ORDER BY:([so].[SLS_ORG_OPR_UNT_SRC_KEY] ASC, [so].[SLS_ORG_PROD_SRC_KEY] ASC, [cal].[WEEK_END_DATE] ASC, [so].[SLS_ORG_EMPL_SRC_KEY] ASC, [so].[SLS_ORG_JOBCODE] ASC, [Expr1015] ASC))
            |                   |--Table Spool
            |                        |--Compute Scalar(DEFINE:([Expr1015]=[Expr1013]+[Expr1014]))
            |                             |--Hash Match(Inner Join, HASH:([so].[SLS_ORG_GK])=([f].[SLS_ORG_GK]), RESIDUAL:([DMRPT].[dbo].[FACT_PRODUCER_SPREAD_HOURS].[SLS_ORG_GK] as [f].[SLS_ORG_GK]=[DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_GK] as [so].[SLS_ORG_GK]))
            |                                  |--Clustered Index Scan(OBJECT:([DMRPT].[dbo].[DIM_SALES_ORG].[SYS_SLS_ORG_GK] AS [so]))
            |                                  |--Hash Match(Inner Join, HASH:([c].[CONTR_GK])=([f].[CONTR_GK]), RESIDUAL:([DMRPT].[dbo].[FACT_PRODUCER_SPREAD_HOURS].[CONTR_GK] as [f].[CONTR_GK]=[DMRPT].[dbo].[DIM_CONTRACTOR].[CONTR_GK] as [c].[CONTR_GK]))
            |                                       |--Compute Scalar(DEFINE:([Expr1014]=CONVERT_IMPLICIT(numeric(38,0),[DMRPT].[dbo].[DIM_CONTRACTOR].[CONTR_SRC_KEY] as [c].[CONTR_SRC_KEY],0)))
            |                                       |    |--Index Scan(OBJECT:([DMRPT].[dbo].[DIM_CONTRACTOR].[nc_csk] AS [c]))
            |                                       |--Hash Match(Inner Join, HASH:([r].[REQ_POS_GK])=([f].[REQ_POS_GK]), RESIDUAL:([DMRPT].[dbo].[FACT_PRODUCER_SPREAD_HOURS].[REQ_POS_GK] as [f].[REQ_POS_GK]=[DMRPT].[dbo].[DIM_REQUISITION_POS].[REQ_POS_GK] as [r].[REQ_POS_GK]))
            |                                            |--Compute Scalar(DEFINE:([Expr1013]=CONVERT_IMPLICIT(numeric(38,0),[DMRPT].[dbo].[DIM_REQUISITION_POS].[REQ_POS_JOB_REQ_SRC_KEY] as [r].[REQ_POS_JOB_REQ_SRC_KEY],0)+[DMRPT].[dbo].[DIM_REQUISITION_POS].[REQ_POS_POSITION_NO] as [r].[REQ_POS_POSITION_NO]))
            |                                            |    |--Clustered Index Scan(OBJECT:([DMRPT].[dbo].[DIM_REQUISITION_POS].[SYS_C00600262] AS [r]))
            |                                            |--Hash Match(Inner Join, HASH:([cal].[DATE_GK])=([f].[WEEK_END_DATE_GK]), RESIDUAL:([DMRPT].[dbo].[FACT_PRODUCER_SPREAD_HOURS].[WEEK_END_DATE_GK] as [f].[WEEK_END_DATE_GK]=[DMRPT].[dbo].[DIM_CALENDAR].[DATE_GK] as [cal].[DATE_GK]))
            |                                                 |--Clustered Index Scan(OBJECT:([DMRPT].[dbo].[DIM_CALENDAR].[SYS_C00599872] AS [cal]), WHERE:([DMRPT].[dbo].[DIM_CALENDAR].[FULL_DATE] as [cal].[FULL_DATE]>=getdate()-'1900-01-31 00:00:00.000'))
            |                                                 |--Clustered Index Scan(OBJECT:([DMRPT].[dbo].[FACT_PRODUCER_SPREAD_HOURS].[PK_FCT_PRDCR_SPRD_HRS] AS [f]))
            |--Compute Scalar(DEFINE:([Expr1016]=[DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_OPR_UNT_SRC_KEY] as [so].[SLS_ORG_OPR_UNT_SRC_KEY], [Expr1017]=[DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_PROD_SRC_KEY] as [so].[SLS_ORG_PROD_SRC_KEY], [Expr1018]=[DMRPT].[dbo].[DIM_CALENDAR].[WEEK_END_DATE] as [cal].[WEEK_END_DATE], [Expr1019]=[DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_EMPL_SRC_KEY] as [so].[SLS_ORG_EMPL_SRC_KEY], [Expr1020]=[DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_JOBCODE] as [so].[SLS_ORG_JOBCODE]))
                 |--Hash Match(Aggregate, HASH:([so].[SLS_ORG_OPR_UNT_SRC_KEY], [so].[SLS_ORG_PROD_SRC_KEY], [cal].[WEEK_END_DATE], [so].[SLS_ORG_EMPL_SRC_KEY], [so].[SLS_ORG_JOBCODE]), RESIDUAL:([DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_OPR_UNT_SRC_KEY] as [so].[SLS_ORG_OPR_UNT_SRC_KEY] = [DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_OPR_UNT_SRC_KEY] as [so].[SLS_ORG_OPR_UNT_SRC_KEY] AND [DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_PROD_SRC_KEY] as [so].[SLS_ORG_PROD_SRC_KEY] = [DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_PROD_SRC_KEY] as [so].[SLS_ORG_PROD_SRC_KEY] AND [DMRPT].[dbo].[DIM_CALENDAR].[WEEK_END_DATE] as [cal].[WEEK_END_DATE] = [DMRPT].[dbo].[DIM_CALENDAR].[WEEK_END_DATE] as [cal].[WEEK_END_DATE] AND [DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_EMPL_SRC_KEY] as [so].[SLS_ORG_EMPL_SRC_KEY] = [DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_EMPL_SRC_KEY] as [so].[SLS_ORG_EMPL_SRC_KEY] AND [DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_JOBCODE] as [so].[SLS_ORG_JOBCODE] = [DMRPT].[dbo].[DIM_SALES_ORG].[SLS_ORG_JOBCODE] as [so].[SLS_ORG_JOBCODE]) DEFINE:([Expr1010]=SUM([DMRPT].[dbo].[FACT_PRODUCER_SPREAD_HOURS].[SPREAD_LCL] as [f].[SPREAD_LCL])))
                      |--Table Spool

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好吧，我发现如果你看到这个操作，在计划中的其他地方寻找它

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因此，将写出计划的一个分支的结果，并在另一个分支中再次使用临时表。现在我看到了源代码，我看到了前置/输入，看到它已经将表连接在一起，并且正在后台处理连接的行。

能否以文本格式发布查询和计划？

SET SHOWPLAN\u text ON GO SELECT…