资产负债表计算中的低速SQL查询

Question

我正在使用Tarazc4 sp计算我的应用程序的资产负债表，但是当我的记录达到50000（超时错误）时非常耗时，请帮忙！我现在想不通了！！！

SELECT * 
INTO #levels
FROM dbo.topics_getlevel()

SELECT * 
INTO #t1 
FROM accounting.documentdetail 
WHERE accounting.documentdetail.date BETWEEN @FromDate AND @ToDate

SELECT * 
FROM 
   (SELECT TOP (100) PERCENT 
        Accounting.Topics.Code, Accounting.Topics.TopicID, Accounting.Topics.ParentID,  
        Accounting.Topics.Description, 
        (SELECT Debit
         FROM dbo.SubTopics_GetSum(Accounting.Topics.TopicID, @FromDate, @ToDate) AS SubTopics_GetSum_2) AS Debit,
        (SELECT Credit
         FROM dbo.SubTopics_GetSum(Accounting.Topics.TopicID, @FromDate, @ToDate) AS SubTopics_GetSum_1) AS Credit, 
        (CASE 
            WHEN ((SELECT     Credit
                              FROM          dbo.subtopics_getsum(Accounting.Topics.TopicID,@FromDate,@ToDate)) -
                          (SELECT     Debit
                             FROM         dbo.subtopics_getsum(Accounting.Topics.TopicID,@FromDate,@ToDate))) < 0 THEN
                          ((SELECT     Debit
                              FROM          dbo.subtopics_getsum(Accounting.Topics.TopicID,@FromDate,@ToDate)) -
                          (SELECT     Credit
                             FROM         dbo.subtopics_getsum(Accounting.Topics.TopicID,@FromDate,@ToDate))) ELSE 0 END) AS ResDEBIT, (CASE WHEN
                          ((SELECT     Credit
                              FROM          dbo.subtopics_getsum(Accounting.Topics.TopicID,@FromDate,@ToDate)) -
                          (SELECT     Debit
                             FROM         dbo.subtopics_getsum(Accounting.Topics.TopicID,@FromDate,@ToDate))) > 0 THEN
                          ((SELECT     Credit
                              FROM          dbo.subtopics_getsum(Accounting.Topics.TopicID,@FromDate,@ToDate)) -
                          (SELECT     Debit
                             FROM         dbo.subtopics_getsum(Accounting.Topics.TopicID,@FromDate,@ToDate))) ELSE 0 END) AS ResCREDIT,(select [Level] from #Levels where TopicID=Accounting.Topics.TopicID) as [Level]
FROM         Accounting.Topics Left OUTER JOIN
                      #t1 ON Accounting.Topics.TopicID = #t1.TopicFK

GROUP BY Accounting.Topics.TopicID, Accounting.Topics.ParentID, Accounting.Topics.Code, Accounting.Topics.Description

ORDER BY Accounting.Topics.TopicID
)
t2

--------------------------------END Tarazc4

并在Tarazc4 sp中使用“dbo.subtopics_getsum”函数来获取每个帐户的总和，请检查一下：

ALTER Function [dbo].[SubTopics_GetSum]

(
@TopicID int,@FromDate char(10),@ToDate char(10)
)
RETURNS TABLE 
AS
RETURN 
(
     WITH cte AS (
     SELECT  T1.TopicID, T1.Code, T1.Description, T1.ParentID, 
     T1.ParentID AS NewParentID, 
     CAST(T1.Code AS nvarchar(MAX)) AS TopicCode, 
     CAST(T1.Description AS nvarchar(MAX)) AS TopicDescription,
     isnull((Accounting.DocumentDetail.Debit),0) AS  Debit,
     isnull((Accounting.DocumentDetail.Credit),0) AS Credit
     FROM Accounting.Topics AS T1 
     LEFT OUTER JOIN
     Accounting.DocumentDetail ON T1.TopicID = Accounting.DocumentDetail.TopicFK
     where (Accounting.DocumentDetail.date between @FromDate and @ToDate) 
     and NOT EXISTS(
          SELECT    T2.TopicID, T2.Code, T2.Description, T2.ParentID, 
          isnull((Accounting.DocumentDetail.Debit),0) AS Debit,
          isnull((Accounting.DocumentDetail.Credit),0) AS Credit
          FROM Accounting.Topics AS T2 
          LEFT OUTER JOIN
          Accounting.DocumentDetail 
          ON T2.TopicID = Accounting.DocumentDetail.TopicFK
          WHERE (Accounting.DocumentDetail.date between @FromDate and @ToDate) 
          and (ParentID = T1.TopicID)
     )
     UNION ALL                          
     SELECT c.TopicID, c.Code, c.Description, c.ParentID, T1.ParentID AS NewParentID, 
     CAST(T1.Code AS nvarchar(MAX)) + c.TopicCode AS TopicCode, 
     CAST(T1.Description AS nvarchar(MAX)) + ' - ' + 
     c.TopicDescription AS TopicDescription,
     c.Debit AS Debit,c.Credit  AS Credit
     FROM cte AS c 
     INNER JOIN Accounting.Topics AS T1 
     ON T1.TopicID = c.NewParentID
     )

     select 
     isnull(sum(Debit),0)+
     isnull(
       (select sum(debit) from accounting.documentdetail 
        where (Accounting.DocumentDetail.date between @FromDate and @ToDate) 
       and topicfk=@TopicID)
     ,0) as Debit,
     isnull(Sum(Credit),0)+
     isnull(
        (select sum(credit) from accounting.documentdetail 
         where (Accounting.DocumentDetail.date between @FromDate and @ToDate) 
         and topicfk=@TopicID)
     ,0) as Credit 
     from cte as c
     WHERE     (NewParentID = @TopicID)
)

实际上，我的主题和文档表如下图所示，我只需要从 documentdetail 表中计算我的主题的资产负债表，并将其显示为我的主题（父子）的层次结构！！！！

Answer 1

我在您的专栏中一遍又一遍地看到dbo.subtopics_getsum(Accounting.Topics.TopicID,@FromDate,@ToDate)。作为一个讨厌的解决方法，您也可以将其转储到像 #t1 这样的临时表中，尽管它可能已经被充分缓存。

我也看不到TOP (100) PERCENT 的必要性，尽管它可能没什么区别。这是在某个阶段从视图中复制出来的吗？

您确实需要正确重构此代码。

Answer 2

最后，我想出了这段代码并惊人地提高了我的性能，但是请检查一下是否还有其他可以帮助提高性能的点???

select * into #tleaf from(select *,(CASE WHEN (Credit-Debit) < 0 THEN (Debit-Credit) ELSE 0 END) AS ResDEBIT,(CASE WHEN(Credit-Debit) > 0 THEN(Credit-Debit) ELSE 0 END) AS ResCREDIT from (SELECT  Accounting.AllTopicsCTE.TopicID, Accounting.AllTopicsCTE.ParentID, Accounting.AllTopicsCTE.Code, Accounting.AllTopicsCTE.Description, isnull(sum(Debit),0) as Debit,isnull(sum(Credit),0) as Credit
                             from Accounting.AllTopicsCTE  LEFT OUTER JOIN
                      Accounting.DocumentDetail ON Accounting.AllTopicsCTE.TopicID = Accounting.DocumentDetail.TopicFK
                      where Accounting.DocumentDetail.Date between @FromDate and @ToDate
                      group by Accounting.AllTopicsCTE.TopicID, Accounting.AllTopicsCTE.ParentID, Accounting.AllTopicsCTE.Code, Accounting.AllTopicsCTE.Description) t0 
                     )t1
               select TopicID,ParentID,Code,Description,0 as Debit,0 as Credit,0 as ResDebit,0 as ResCredit into #tmain from Accounting.Topics where TopicID not in(select TopicID from #tleaf)      

                   --#tresult 
                    select * into #tresult from 
                    (select * from #tmain
                     union all
                     select * from #tleaf) b;
                     --------------------------------------------------------------
WITH HierarchicalCTE AS
(
    SELECT TopicID, ParentID, Code, Description,
           Debit,Credit,ResDebit,ResCredit, 0 AS LEVEL
    FROM #tresult i
    UNION ALL
    SELECT i.TopicID, i.ParentID, i.Code, i.Description,
           cte.Debit, cte.Credit,cte.ResDebit,cte.ResCredit,
           cte.LEVEL + 1
    FROM HierarchicalCTE cte join
         #tresult i
         ON i.TopicID = cte.ParentID
)
select TopicID, ParentID, Code, Description,
       sum(Debit) as Debit, sum(Credit) as Credit,sum(ResDebit) as ResDEBIT,sum(ResCredit) as ResCREDIT,(select [Level] from #Levels where TopicID=HierarchicalCTE.TopicID) as [Level]
from HierarchicalCTE
group by TopicID, ParentID, Code, Description
                     ------------------------------