我有一个针对特定参数运行非常缓慢的存储过程。
存储过程返回一个数据集。
我将存储过程转换为视图。我声明了相同的参数和值，它会在几秒钟内返回数据集。
存储过程需要五分钟。
我将问题缩小到存储过程中的特定子查询。删除子查询使存储过程能够立即返回数据。我将子查询转换为临时表并加入临时表而不是子查询，现在存储过程在几秒钟内返回数据。
初始视图与存储过程测试中的操作相同。视图的执行方式有什么不同吗？
这是使用新临时表的存储过程。原来的子查询被注释掉了：
(@JCCo bCompany,
@BegContract bContract ='',
@EndContract bContract ='zzzzzzzzzz',
@ThruMth bDate,
@PM int = 0,
@LabCTs varchar(10)=null,
@MatCTs varchar(10)=null,
@BegDept varchar(10) ='',
@EndDept varchar(10) ='zzzzzzzzzz')
With Recompile
as
--move the dates into a temp table
Select JCJM.JCCo, JCJM.Contract, JCCD.Job,
LastLaborDate=max(Case when JCTransType='PR' and (CostType between 2 and 3) then ActualDate else null end),
LastProjCostDate=max(Case when JCTransType='PF' then ActualDate else null end)
INTO #DATES
From JCCD JCCD with(NoLock)
Join JCJM JCJM with(nolock) on JCJM.JCCo=JCCD.JCCo and JCJM.Job=JCCD.Job
where (JCTransType='PR' or JCTransType='PF') and JCCD.JCCo=@JCCo and JCCD.Mth<=@ThruMth
and JCJM.Contract Between @BegContract and @EndContract
group by JCJM.JCCo,JCJM.Contract,JCCD.Job
-- ) as Dates on j.JCCo=Dates.JCCo and j.Contract=Dates.Contract and j.Job=Dates.Job
Select JCCD.JCCo, JCCD.Job, JobDesc=j.Description, b.Contract, ContrDesc=b.Description,
-- MAX(Dates.LastLaborDate) as maxLastLaborDate, MAX(Dates.LastProjCostDate) as maxLastProjCostDate,
TD.LastLaborDate, TD.LastProjCostDate,
-- '01/01/2013' AS LastLaborDate, '01/01/2015' AS LastProjCostDate,
JCCD.Mth, JCCD.Phase, PhsDesc=JCJP.Description,
JCCD.CostType, CTDesc=JCCT.Description, JCCT.JBCostTypeCategory,
FieldPctCompl=isnull(u.PctCompl,0), FieldDate=Max(u.Date), PMName=p.Name,
EstHours=sum(EstHours), EstCost=sum(EstCost), JTDHrs=sum(ActualHours), JTDCost=sum(ActualCost),
ProjHours=sum(JCCD.ProjHours), ProjCost=sum(JCCD.ProjCost),
MTDHrs=sum(case when JCCD.Mth=@ThruMth then ActualHours else 0 end),
MTDCost=sum(case when JCCD.Mth=@ThruMth then ActualCost else 0 end),
FActCost=SUM(Case when JCCO.ProjMethod=2 then JCCD.ActualCost+JCCD.RemainCmtdCost else JCCD.ActualCost end),
b.Department, DeptDesc=d.Description, HQName=HQCO.Name,ContrStat=b.ContractStatus,UIAmt=0,UITaxAmt=0,UIMiscAmt=0,ToBeInvd=0,sumTotalCmtdCost=0
from JCCD JCCD with(NoLock)
Left Outer Join JCJM j with(NoLock) on JCCD.JCCo=j.JCCo and JCCD.Job=j.Job
Left Outer Join JCCM b with(NoLock) on j.JCCo=b.JCCo and j.Contract=b.Contract
Left Outer Join JCDM d with(noLock) on b.JCCo=d.JCCo and b.Department=d.Department
Left Outer Join JCMP p with(NoLock) on j.JCCo=p.JCCo and j.ProjectMgr=p.ProjectMgr
Left Outer Join JCJP JCJP with(NoLock) on JCCD.JCCo=JCJP.JCCo and JCCD.Job=JCJP.Job and JCCD.Phase=JCJP.Phase
Left Outer Join JCCT JCCT with(NoLock) on JCCD.PhaseGroup=JCCT.PhaseGroup and JCCD.CostType=JCCT.CostType
Left Outer Join (Select u.Co, Job=u.Contract/*Prints Job# 9/13 per Tina - - VU9148*/, JCJM.Contract,
u.Phase, u.CostType, a.Mth,
Date=Max(isnull(Date,'1950-01-01')),PctCompl=isnull(PctCompl,0)
from udVPPctComplete u
Join JCJM on u.Co=JCJM.JCCo and u.Contract=JCJM.Job
Join (select Co, Job=a.Contract,Contract=JCJM.Contract, Phase, CostType, Mth=Max(isnull(Mth,'1950-01-01'))
from udVPPctComplete a
Join JCJM on a.Co=JCJM.JCCo and a.Contract=JCJM.Job
where Mth<=@ThruMth and Co=@JCCo and JCJM.Contract between @BegContract and @EndContract
group by Co, a.Contract,JCJM.Contract, Phase, CostType
)a on a.Co=u.Co and a.Job=u.Contract and a.Phase=u.Phase and a.CostType=u.CostType and a.Mth=u.Mth and a.Contract=JCJM.Contract
group by u.Co, u.Contract,JCJM.Contract, u.Phase, u.CostType, a.Mth, isnull(PctCompl,0)
) u on JCCD.JCCo=u.Co and b.Contract=u.Contract and JCCD.Phase=u.Phase and JCCD.CostType=u.CostType and u.Job=JCCD.Job
LEFT OUTER JOIN #DATES TD ON j.JCCo=TD.JCCo and j.Contract=TD.Contract and j.Job=TD.Job
--Left Outer Join (Select JCJM.JCCo, JCJM.Contract, JCCD.Job,
-- LastLaborDate=max(Case when JCTransType='PR' and (CostType between 2 and 3) then ActualDate else null end),
-- LastProjCostDate=max(Case when JCTransType='PF' then ActualDate else null end)
-- From JCCD JCCD with(NoLock)
-- Join JCJM JCJM with(nolock) on JCJM.JCCo=JCCD.JCCo and JCJM.Job=JCCD.Job
-- where (JCTransType='PR' or JCTransType='PF') and JCCD.JCCo=@JCCo and JCCD.Mth<=@ThruMth
-- and JCJM.Contract Between @BegContract and @EndContract
-- group by JCJM.JCCo,JCJM.Contract,JCCD.Job
-- ) as Dates on j.JCCo=Dates.JCCo and j.Contract=Dates.Contract and j.Job=Dates.Job
Join JCCO JCCO with(NoLock) on JCCD.JCCo=JCCO.JCCo
Join HQCO HQCO with(NoLock) on JCCD.JCCo=HQCO.HQCo
where JCCD.JCCo=@JCCo and b.Contract/*=' 51431.'--*/ between @BegContract and @EndContract and JCCD.Mth<=@ThruMth
and b.Department>=@BegDept and b.Department<=@EndDept
and j.ProjectMgr=(case when @PM<>0 then @PM else j.ProjectMgr end)
and (charindex(','+left(cast(JCCD.CostType as char(5))+' ', len(convert(varchar, JCCD.CostType)))+',', ','+@LabCTs+',')<>0
or charindex(','+left(cast(JCCD.CostType as char(5))+' ', len(convert(varchar, JCCD.CostType)))+',', ','+@MatCTs+',')<>0 )
Group by JCCD.JCCo, JCCD.Job,j.Description, b.Contract, b.Description, JCCD.Mth, JCCD.Phase, JCJP.Description, JCCD.CostType,
u.PctCompl,JCCT.Description, p.Name,JCCT.JBCostTypeCategory,
TD.LastLaborDate, TD.LastProjCostDate,
--Dates.LastLaborDate, Dates.LastProjCostDate,
b.Department,
d.Description,HQCO.Name,b.ContractStatus