쿼리가 매우 느리게 실행 중입니다.

Question

6500 검사기에 대해 일부 통계를 실행하도록 SQL 쿼리를 설계했지만 너무 오래 걸립니다. sql에는 다른 많은 선택 쿼리가 있지만 실행 중입니다. 그러나 "TotalVisitsWithAtLeastOneReport"선택이 매우 느리게 실행됩니다.

요건 :

Inspectors: InspectorID 
InspectionScope: ScopeID, InspectorID (FK) 
Visits: VisitID, VisitDate ScopeID (FK) 
VisitsDoc: DocID, DocType, VisitID (FK) 

SQL :

방문 문서 (1 또는 2 또는 13)에 업로드 한 각 검사

테이블에 대한 방문

• 번호

  DECLARE 
       @DateFrom90 date, @DateTo date, @DateFrom180 date, @DateFrom date; 
  
  SELECT @DateTo  = CAST(GETDATE() AS DATE) 
       ,@DateFrom90 = CAST(GETDATE() - 90 AS DATE) 
       ,@DateFrom180 = CAST(GETDATE() - 180 AS DATE) 
  
  
  
  DECLARE @Inspectors TABLE (
       InspectorID int, 
       InspectorGrade int, 
       DateFrom date, 
       DateTo date 
       ); 
  
  insert into @inspectors (
       InspectorID , 
       InspectorGrade, 
       DateFrom , 
       DateTo 
       ) 
  
  select tmp.InspectorID , tmp.InspectorGrade 
       ,case when tmp.VisitWithReport = 0 then @DateFrom180 else @DateFrom90 end StartDate 
       ,@DateTo EndDate 
  from 
  (
      select i.InspectorID , i.InspectorGrade 
        ,VisitWithReport = (select COUNT(v.visitid) 
             from visits v 
             inner join InspectionScope s on s.ScopeID = v.ScopeID 
             where v.ReportStandard not in (0,9) and v.VisitType = 1 
             and v.VisitDate BETWEEN @DateFrom90 and @DateTo 
             and s.InspectorID = i.InspectorID)  
      from inspectors i 
  ) tmp; 
  
  
  SELECT i.InspectorID , i.InspectorGrade 
       ,TotalVisitsWithAtLeastOneReport = (select COUNT(distinct v.visitID) 
                from Visits v 
                inner join InspectionScope s on s.ScopeID = v.ScopeID 
                inner join VisitDocs vd on vd.VisitID = v.VisitID 
                where vd.DocType IN (1,2,13) and s.InspectorID = i.InspectorID 
                and v.VisitDate BETWEEN i.DateFrom and i.DateTo 
  
               ) 
  from @Inspectors i 
  

  이

  select i.InspectorID , i.InspectorGrade 
        ,VisitWithReport = (select COUNT(v.visitid) 
             from visits v 
             inner join InspectionScope s 
             on s.ScopeID = v.ScopeID 
             where v.ReportStandard not in (0,9) and v.VisitType = 1 
             and v.VisitDate BETWEEN @DateFrom90 and @DateTo 
             and s.InspectorID = i.InspectorID) 
  from inspectors i  
  

  을 수행하지 않는

  

Answer 1

쿼리 튜닝 어드바이저와 이후에 내 sql을 확인했습니다. 다음과 같은 비 클러스터 인덱스를 생성하면 SQL 스크립트는 실행하는 데 2 ​​~ 3 초 밖에 걸리지 않습니다. 이것을 더 테스트 할 것이고, 라이브로 구현되기 전에 시스템의 다른 부분에 영향을 미치지 않을지를 볼 것입니다.

CREATE NONCLUSTERED INDEX [DocType_VisitID] ON [dbo].[VisitDocs] 
(
[DocType] ASC, 
[VisitID] ASC 
)WITH (SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF) ON [PRIMARY] 

Answer 2

브레이크를 아래로 볼이 시도 - 당신이 훨씬 더 가능성

select i.InspectorID, i.InspectorGrade 
    , COUNT(v.visitid) as VisitWithReport 
    from inspectors i 
    join InspectionScope s 
    on s.InspectorID = i.InspectorID   
    join visits v 
    on v.ScopeID = s.ScopeID  
    and v.ReportStandard not in (0,9) 
    and v.VisitType = 1 
    and v.VisitDate BETWEEN @DateFrom90 and @DateTo 
group by i.InspectorID, i.InspectorGrade 


SELECT i.InspectorID , i.InspectorGrade 
     ,TotalVisitsWithAtLeastOneReport = (select COUNT(distinct v.visitID) 
              from Visits v 
              inner join InspectionScope s on s.ScopeID = v.ScopeID 
              inner join VisitDocs vd on vd.VisitID = v.VisitID 
              where vd.DocType IN (1,2,13) and s.InspectorID = i.InspectorID 
              and v.VisitDate BETWEEN i.DateFrom and i.DateTo 

             ) 
from @Inspectors i 

이

SELECT i.InspectorID , i.InspectorGrade 
     , COUNT(distinct v.visitID) as TotalVisitsWithAtLeastOneReport 
    from @Inspectors i 
    join InspectionScope s 
     on s.InspectorID = i.InspectorID 
    join Visits v 
     on s.ScopeID = v.ScopeID 
    join VisitDocs vd 
     on vd.VisitID = v.VisitID 
     and vd.DocType IN (1,2,13) 
     and v.VisitDate BETWEEN i.DateFrom and i.DateTo 
    group by i.InspectorID , i.InspectorGrade 

을 시도 스마트 얻을에게 쿼리 최적화를 제공