使用#temp表优化SQL Server查询并按条件

时间：2016-06-06 09:03:29

标签： sql sql-server sql-server-2008 group-by temp-tables

我在下面查询它是按预期工作但需要很长时间才能执行。

要获得结果，我已在临时表中获取记录，然后应用groupby获取最终结果

SELECT * 
INTO #temp From (

  select A.*,B.* 
  from (
    select e.Id,e.code,e.Fname,
      (select ComboValue from dbo.comvals where Id = c.BUDHOL) as [BUDHOL],
      (select ComboValue from dbo.comvals where Id = c.COMPANY) as [COMPANY],
      (select ComboValue from dbo.comvals where Id = c.BENEFICIARY) as [BENEFICIARY],
      (select ComboValue from dbo.comvals where Id = c.SPARE2) as [SPARE2],
      (select ComboValue from dbo.comvals where Id = c.SPARE1) as [SPARE1],
      (select ComboValue from dbo.comvals where Id = c.EXPORG) as [EXPORG],
      (select ComboValue from dbo.comvals where Id = c.EXPTYPE) as [EXPTYPE],
      (select ComboValue from dbo.comvals where Id = c.OBJECTIVE) as [OBJECTIVE],
      (select ComboValue from dbo.comvals where Id = c.TASKNO) as [TASKNO],
      (select ComboValue from dbo.comvals where Id = c.PROJECTNO) as [PROJECTNO]
    from dbo.EmployeeDetail e  
    left join (
      select * 
      from (
        select CustomeFieldName,FieldValue,CompanyId,EmployeeId   
        from  dbo.CustomeFieldDetail   
        where CustomeFieldName in ('BENEFICIARY','BUDHOL','COMPANY', 'EXPORG','EXPTYPE','OBJECTIVE','PROJECTNO','SPARE2','SPARE1','TASKNO','COMPANY') and CompanyId = 1 
      )as src  
      pivot (max(FieldValue) for CustomeFieldName in ([BENEFICIARY],[BUDHOL],[EXPORG],[EXPTYPE],[OBJECTIVE],[PROJECTNO],[SPARE2],[SPARE1],[TASKNO],[COMPANY])
            ) as src2
    ) c on e.Id = c.EmployeeId   and e.CompanyId = c.CompanyId and e.DateOfJoining <= convert(datetime,'30/03/2016',103) and e.CompanyId = 1       
    where e.Companyid=1 --order by e.Code
  ) A
  Full Outer join (
    select
      T.EmployeeId,
      X.[FieldName],
      X.[Value]
    from dbo.EmpTransaction T
    cross apply (
      SELECT         
        T.c.value('(@Name)[1]', 'Varchar(max)') AS [FieldName],
        convert(float,T.c.value('(@Value)[1]', 'Varchar(max)')) AS [Value]
      FROM TransactionFieldDetails.nodes('//PayDetails/Column') T(c)
      where CompanyId = 1 and  ProcessDate = convert(datetime,'01/03/2016',103) and CategoryId in (1) 
            and T.c.value('(@Name)[1]', 'Varchar(max)') in('FB')
    ) X
  ) B
  ON A.id= B.EmployeeId
) As x
  

临时表上的最终GroupBy条件

SELECT B.BENEFICIARY,
       B.BUDHOL,
       B.COMPANY,
       B.FIELDNAME,
       B.OBJECTIVE,
       B.SPARE1,
       B.SPARE2,
       B.PROJECTNO,
       B.TASKNO,
       B.EXPORG,
       B.EXPTYPE,
       SUM(B.value)
FROM (
    SELECT DISTINCT A.BENEFICIARY,
                    A.BUDHOL,
                    A.COMPANY,
                    A.FIELDNAME,
                    A.OBJECTIVE,
                    A.value,
                    A.SPARE2,
                    A.SPARE1,
                    A.PROJECTNO,
                    A.TASKNO,
                    A.EXPORG,
                    A.EXPTYPE
    FROM (
        SELECT t.BENEFICIARY,
               t.BUDHOL,
               t.COMPANY,
               t.FIELDNAME,
               t.OBJECTIVE,
               t.SPARE1,
               t.SPARE2,
               t.PROJECTNO,
               t.TASKNO,
               t.EXPORG,
               t.EXPTYPE,
               t.value value
        FROM #temp T, #temp TT
    ) A
    LEFT JOIN #temp T1 ON A.BENEFICIARY = t1.BENEFICIARY
        AND A.BUDHOL = t1.BUDHOL
        AND A.COMPANY = t1.COMPANY
        AND A.OBJECTIVE = t1.OBJECTIVE
        AND A.SPARE1 = t1.SPARE1
        AND A.SPARE2 = t1.SPARE2
        AND A.PROJECTNO = t1.PROJECTNO
        AND A.TASKNO = t1.TASKNO
        AND A.EXPORG = t1.EXPORG
        AND A.EXPTYPE = t1.EXPTYPE
) B
GROUP BY B.BENEFICIARY,
         B.BUDHOL,
         B.COMPANY,
         B.OBJECTIVE,
         B.FIELDNAME,
         B.SPARE1,
         B.SPARE2,
         B.PROJECTNO,
         B.TASKNO,
         B.EXPORG,
         B.EXPTYPE
  

以上查询工作正常并且符合预期。   需要知道上面的查询是否可以优化，以便我可以花费更少的时间执行当前执行需要2分钟以上，我们也可以结合两个查询，即我不想使用 #temp 表

2 个答案:

答案 0 :(得分：1)

IF OBJECT_ID('tempdb.dbo.#temp') IS NOT NULL
    DROP TABLE #temp

SELECT A.*, B.*
INTO #temp
FROM (
    SELECT
        e.Id,
        e.code,
        e.Fname,
        c.[BUDHOL],
        c.[COMPANY],
        c.[BENEFICIARY],
        c.[SPARE2],
        c.[SPARE1],
        c.[EXPORG],
        c.[EXPTYPE],
        c.[OBJECTIVE],
        c.[TASKNO],
        c.[PROJECTNO]
    FROM dbo.EmployeeDetail e  
    LEFT JOIN (
        SELECT *
        FROM (
            SELECT
                  d.CustomeFieldName
                , c.ComboValue
                , d.EmployeeId
            FROM dbo.CustomeFieldDetail d
            LEFT JOIN dbo.comvals c ON c.Id = d.FieldValue
            WHERE d.CustomeFieldName IN (
                    'BENEFICIARY', 'BUDHOL', 'COMPANY',
                    'EXPORG', 'EXPTYPE', 'OBJECTIVE',
                    'PROJECTNO', 'SPARE2', 'SPARE1',
                    'TASKNO', 'COMPANY'
                )
                AND d.CompanyId = 1
        ) src 
        PIVOT (
            MAX(ComboValue)
            FOR CustomeFieldName IN (
                [BENEFICIARY],[BUDHOL],[EXPORG],
                [EXPTYPE],[OBJECTIVE],[PROJECTNO],
                [SPARE2],[SPARE1],
                [TASKNO],[COMPANY]
           )
        ) src2
    ) c ON e.Id = c.EmployeeId
        AND e.DateOfJoining <= '20160330'
    WHERE e.Companyid = 1
) A
FULL JOIN (
    SELECT t.EmployeeId,
           x.[FieldName],
           x.[Value]
    FROM dbo.EmpTransaction t
    CROSS APPLY (
        SELECT t.c.value('(@Name)[1]', 'VARCHAR(1000)') AS [FieldName],
               t.c.value('(@Value)[1]', 'FLOAT') AS [Value]
        FROM TransactionFieldDetails.nodes('//PayDetails/Column') t(c)
    ) x
    WHERE [FieldName] = 'FB'
        AND CompanyId = 1
        AND ProcessDate = '20160301'
        AND CategoryId = 1
) B ON A.id = B.EmployeeId

SELECT B.BENEFICIARY,
       B.BUDHOL,
       B.COMPANY,
       B.FIELDNAME,
       B.OBJECTIVE,
       B.SPARE1,
       B.SPARE2,
       B.PROJECTNO,
       B.TASKNO,
       B.EXPORG,
       B.EXPTYPE,
       SUM(B.value)
FROM (
    SELECT DISTINCT A.BENEFICIARY,
                    A.BUDHOL,
                    A.COMPANY,
                    A.FIELDNAME,
                    A.OBJECTIVE,
                    A.value,
                    A.SPARE2,
                    A.SPARE1,
                    A.PROJECTNO,
                    A.TASKNO,
                    A.EXPORG,
                    A.EXPTYPE
    FROM #temp A
    LEFT JOIN #temp T1 ON A.BENEFICIARY = t1.BENEFICIARY
        AND A.BUDHOL = t1.BUDHOL
        AND A.COMPANY = t1.COMPANY
        AND A.OBJECTIVE = t1.OBJECTIVE
        AND A.SPARE1 = t1.SPARE1
        AND A.SPARE2 = t1.SPARE2
        AND A.PROJECTNO = t1.PROJECTNO
        AND A.TASKNO = t1.TASKNO
        AND A.EXPORG = t1.EXPORG
        AND A.EXPTYPE = t1.EXPTYPE
) B
GROUP BY B.BENEFICIARY,
         B.BUDHOL,
         B.COMPANY,
         B.OBJECTIVE,
         B.FIELDNAME,
         B.SPARE1,
         B.SPARE2,
         B.PROJECTNO,
         B.TASKNO,
         B.EXPORG,
         B.EXPTYPE

答案 1 :(得分：0)

组合成1个查询

WITH temp AS (

select A.*,B.* from 
(select e.Id,e.code,e.Fname,
(select ComboValue from dbo.comvals where Id = c.BUDHOL) as [BUDHOL],
(select ComboValue from dbo.comvals where Id = c.COMPANY) as [COMPANY],
(select ComboValue from dbo.comvals where Id = c.BENEFICIARY) as [BENEFICIARY],
(select ComboValue from dbo.comvals where Id = c.SPARE2) as [SPARE2],
(select ComboValue from dbo.comvals where Id = c.SPARE1) as [SPARE1],
(select ComboValue from dbo.comvals where Id = c.EXPORG) as [EXPORG],
(select ComboValue from dbo.comvals where Id = c.EXPTYPE) as [EXPTYPE],
(select ComboValue from dbo.comvals where Id = c.OBJECTIVE) as [OBJECTIVE],
(select ComboValue from dbo.comvals where Id = c.TASKNO) as [TASKNO],
(select ComboValue from dbo.comvals where Id = c.PROJECTNO) as [PROJECTNO]
from dbo.EmployeeDetail e  
left join   (select * from   (select CustomeFieldName,FieldValue,CompanyId,EmployeeId   from  dbo.CustomeFieldDetail   where CustomeFieldName in ('BENEFICIARY','BUDHOL','COMPANY', 'EXPORG','EXPTYPE','OBJECTIVE','PROJECTNO','SPARE2','SPARE1','TASKNO','COMPANY') and CompanyId = 1 )as src  pivot (max(FieldValue) for CustomeFieldName in ([BENEFICIARY],[BUDHOL],[EXPORG],[EXPTYPE],[OBJECTIVE],[PROJECTNO],[SPARE2],[SPARE1],[TASKNO],[COMPANY])) as src2) c on e.Id = c.EmployeeId   and e.CompanyId = c.CompanyId and e.DateOfJoining <= convert(datetime,'30/03/2016',103) and e.CompanyId = 1       where e.Companyid=1 --order by e.Code
)A
Full Outer join 
(select
    T.EmployeeId,
    X.[FieldName],
    X.[Value]
from dbo.EmpTransaction T
cross apply (
SELECT         
T.c.value('(@Name)[1]', 'Varchar(max)') AS [FieldName],
convert(float,T.c.value('(@Value)[1]', 'Varchar(max)')) AS [Value]
FROM TransactionFieldDetails.nodes('//PayDetails/Column') T(c)
where CompanyId = 1 and  ProcessDate = convert(datetime,'01/03/2016',103) and CategoryId in (1) 
and T.c.value('(@Name)[1]', 'Varchar(max)') in('FB')
) X )B
ON A.id= B.EmployeeId

 )
 SELECT B.BENEFICIARY,
       B.BUDHOL,
       B.COMPANY,
       B.FIELDNAME,
       B.OBJECTIVE,
       B.SPARE1,
       B.SPARE2,
       B.PROJECTNO,
       B.TASKNO,
       B.EXPORG,
       B.EXPTYPE,
       SUM(B.value)
FROM (
    SELECT DISTINCT A.BENEFICIARY,
                    A.BUDHOL,
                    A.COMPANY,
                    A.FIELDNAME,
                    A.OBJECTIVE,
                    A.value,
                    A.SPARE2,
                    A.SPARE1,
                    A.PROJECTNO,
                    A.TASKNO,
                    A.EXPORG,
                    A.EXPTYPE
    FROM (
        SELECT t.BENEFICIARY,
               t.BUDHOL,
               t.COMPANY,
               t.FIELDNAME,
               t.OBJECTIVE,
               t.SPARE1,
               t.SPARE2,
               t.PROJECTNO,
               t.TASKNO,
               t.EXPORG,
               t.EXPTYPE,
               t.value value
        FROM temp T, temp TT
    ) A
    LEFT JOIN #temp T1 ON A.BENEFICIARY = t1.BENEFICIARY
        AND A.BUDHOL = t1.BUDHOL
        AND A.COMPANY = t1.COMPANY
        AND A.OBJECTIVE = t1.OBJECTIVE
        AND A.SPARE1 = t1.SPARE1
        AND A.SPARE2 = t1.SPARE2
        AND A.PROJECTNO = t1.PROJECTNO
        AND A.TASKNO = t1.TASKNO
        AND A.EXPORG = t1.EXPORG
        AND A.EXPTYPE = t1.EXPTYPE
) B
GROUP BY B.BENEFICIARY,
         B.BUDHOL,
         B.COMPANY,
         B.OBJECTIVE,
         B.FIELDNAME,
         B.SPARE1,
         B.SPARE2,
         B.PROJECTNO,
         B.TASKNO,
         B.EXPORG,
         B.EXPTYPE
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