La requête SQL s'exécute plus vite que la procédure stockée

Question

J'ai une procédure stockée que j'ai modifiée récemment sur mon serveur de production et elle a commencé à mal fonctionner, mais lorsque je lance la requête de manière indépendante, elle fonctionne correctement. La différence de temps est beaucoup, c'est-à-dire que comparer 5 secondes à 10 minutes est alarmant.

J'ai lu cet article SQL Server: Query fast, but slow from procedure et essayé de résoudre mon problème avec toutes les solutions possibles, mais toujours le proc stocké ne fonctionne pas, il a la même différence dans les timings. Quelqu'un peut-il me dire ce que je devrais changer pour que mon proc stocké s'exécute au moins aussi vite que la requête? Je suis un peu surpris par ce comportement de SQL Server

Bon plan

|--Clustered Index Seek(OBJECT:([IndusLynk].[dbo].[Assessment].[PK_Assessment] AS [a]), SEEK:([a].[Assessment_Id]=[@AssessmentID]) ORDERED FORWARD) 
    |--Compute Scalar(DEFINE:([Expr1009]=CONVERT_IMPLICIT(float(53),[Expr1008]-(1),0))) 
     |--Compute Scalar(DEFINE:([Expr1008]=CONVERT_IMPLICIT(int,[Expr1012],0))) 
      |--Stream Aggregate(DEFINE:([Expr1012]=Count(*))) 
       |--Stream Aggregate(GROUP BY:([ci].[Candidate_Instance_Id])) 
         |--Parallelism(Gather Streams, ORDER BY:([rr].[Candidate_Instance_ID] ASC)) 
          |--Nested Loops(Inner Join, OUTER REFERENCES:([rr].[Candidate_Instance_ID])) 
           |--Sort(ORDER BY:([rr].[Candidate_Instance_ID] ASC)) 
           | |--Clustered Index Scan(OBJECT:([IndusLynk].[dbo].[Processed_Response].[PK_Processed_Response] AS [rr]), WHERE:([IndusLynk].[dbo].[Processed_Response].[Assessment_ID] as [rr].[Assessment_ID]=[@AssessmentID] AND [IndusLynk].[dbo].[Processed_Response].[Client_ID] as [rr].[Client_ID]=[@UserID])) 
           |--Stream Aggregate(DEFINE:([ci].[Candidate_Instance_Id]=ANY([IndusLynk].[dbo].[Candidate_Instance].[Candidate_Instance_Id] as [ci].[Candidate_Instance_Id]))) 
            |--Nested Loops(Inner Join, WHERE:([IndusLynk].[dbo].[Candidate_Instance].[Instance_Status] as [ci].[Instance_Status]=[status])) 
              |--Clustered Index Seek(OBJECT:([IndusLynk].[dbo].[Candidate_Instance].[PK_Candidate_Instance] AS [ci]), SEEK:([ci].[Candidate_Instance_Id]=[IndusLynk].[dbo].[Processed_Response].[Candidate_Instance_ID] as [rr].[Candidate_Instance_ID]) ORDERED FORWARD) 
              |--Table Scan(OBJECT:(@AssessmentStatuses)) 
    |--Table Insert(OBJECT:(@ItemDetailTable), SET:([Candidate_Id] = [IndusLynk].[dbo].[Candidate].[Candidate_Id] as [c].[Candidate_Id],[Instance_End_Time] = [IndusLynk].[dbo].[Candidate_Instance].[Instance_End_Time] as [ci].[Instance_End_Time],[Candidate_Instance_Id] = [IndusLynk].[dbo].[Processed_Response].[Candidate_Instance_ID] as [rr].[Candidate_Instance_ID],[Assessment_Id] = [IndusLynk].[dbo].[Processed_Response].[Assessment_ID] as [rr].[Assessment_ID],[OverAllScore] = [Expr1030],[Section_ID] = [IndusLynk].[dbo].[Processed_Response].[Section_ID] as [rr].[Section_ID],[AttempteCount] = [Expr1025],[CorrectCount] = [Expr1026],[Respone_Time] = [Expr1027],[Display_Name] = [Expr1032],[Display_Type_Id] = [IndusLynk].[dbo].[Question].[Display_Type_Id] as [q].[Display_Type_Id],[MaxMarks] = [Expr1033],[Item_ID] = [IndusLynk].[dbo].[Processed_Response].[Item_ID] as [rr].[Item_ID],[Percentile] = NULL)) 
     |--Compute Scalar(DEFINE:([Expr1033]=CONVERT_IMPLICIT(int,[Expr1031],0))) 
      |--Top(ROWCOUNT est 0) 
       |--Compute Scalar(DEFINE:([Expr1032]=CONVERT_IMPLICIT(varchar(100),[IndusLynk].[dbo].[Display_Type].[Display_Name] as [dt].[Display_Name],0))) 
         |--Sort(DISTINCT ORDER BY:([ci].[Instance_End_Time] DESC, [rr].[Candidate_Instance_ID] DESC, [c].[Candidate_Id] ASC, [rr].[Section_ID] ASC, [q].[Display_Type_Id] ASC, [Expr1030] ASC, [Expr1025] ASC, [Expr1026] ASC, [Expr1027] ASC, [dt].[Display_Name] ASC, [Expr1031] ASC, [rr].[Item_ID] ASC)) 
          |--Compute Scalar(DEFINE:([Expr1030]=round([Expr1024],(2)), [Expr1031]=CASE WHEN [IndusLynk].[dbo].[Question].[Display_Type_Id] as [q].[Display_Type_Id]=(8) THEN [Expr1028] ELSE [Expr1029] END)) 
           |--Stream Aggregate(GROUP BY:([rr].[Candidate_Instance_ID], [c].[First_Name], [c].[Last_Name], [rr].[Section_ID], [q].[Display_Type_Id], [rr].[Item_ID]) DEFINE:([Expr1024]=SUM([Expr1034]), [Expr1025]=SUM([Expr1035]), [Expr1026]=SUM([Expr1036]), [Expr1027]=SUM([Expr1037]), [Expr1028]=SUM([Expr1038]), [Expr1029]=MAX([Expr1039]), [ci].[Instance_End_Time]=ANY([IndusLynk].[dbo].[Candidate_Instance].[Instance_End_Time] as [ci].[Instance_End_Time]), [c].[Candidate_Id]=ANY([IndusLynk].[dbo].[Candidate].[Candidate_Id] as [c].[Candidate_Id]), [rr].[Assessment_ID]=ANY([IndusLynk].[dbo].[Processed_Response].[Assessment_ID] as [rr].[Assessment_ID]), [dt].[Display_Name]=ANY([IndusLynk].[dbo].[Display_Type].[Display_Name] as [dt].[Display_Name]))) 
            |--Compute Scalar(DEFINE:([Expr1038]=CASE WHEN isnull([IndusLynk].[dbo].[Answer].[Answer_Weightage] as [ans].[Answer_Weightage],(0.000000000000000e+000))>(-1.000000000000000e+000) THEN isnull([IndusLynk].[dbo].[Answer].[Answer_Weightage] as [ans].[Answer_Weightage],(0.000000000000000e+000)) ELSE (0.000000000000000e+000) END, [Expr1039]=isnull([IndusLynk].[dbo].[Answer].[Answer_Weightage] as [ans].[Answer_Weightage],(0.000000000000000e+000)))) 
              |--Nested Loops(Left Outer Join, OUTER REFERENCES:([id].[Answer_Id], [Expr1052]) WITH ORDERED PREFETCH) 
               |--Nested Loops(Left Outer Join, OUTER REFERENCES:([rr].[Item_ID])) 
               | |--Sort(ORDER BY:([rr].[Candidate_Instance_ID] ASC, [c].[First_Name] ASC, [c].[Last_Name] ASC, [rr].[Section_ID] ASC, [q].[Display_Type_Id] ASC, [rr].[Item_ID] ASC)) 
               | | |--Stream Aggregate(GROUP BY:([rr].[Processed_Response_ID]) DEFINE:([rr].[Candidate_Instance_ID]=ANY([IndusLynk].[dbo].[Processed_Response].[Candidate_Instance_ID] as [rr].[Candidate_Instance_ID]), [rr].[Assessment_ID]=ANY([IndusLynk].[dbo].[Processed_Response].[Assessment_ID] as [rr].[Assessment_ID]), [rr].[Section_ID]=ANY([IndusLynk].[dbo].[Processed_Response].[Section_ID] as [rr].[Section_ID]), [rr].[Item_ID]=ANY([IndusLynk].[dbo].[Processed_Response].[Item_ID] as [rr].[Item_ID]), [ci].[Instance_End_Time]=ANY([IndusLynk].[dbo].[Candidate_Instance].[Instance_End_Time] as [ci].[Instance_End_Time]), [c].[Candidate_Id]=ANY([IndusLynk].[dbo].[Candidate].[Candidate_Id] as [c].[Candidate_Id]), [c].[First_Name]=ANY([IndusLynk].[dbo].[Candidate].[First_Name] as [c].[First_Name]), [c].[Last_Name]=ANY([IndusLynk].[dbo].[Candidate].[Last_Name] as [c].[Last_Name]), [q].[Display_Type_Id]=ANY([IndusLynk].[dbo].[Question].[Display_Type_Id] as [q].[Display_Type_Id]), [dt].[Display_Type_Id]=ANY([IndusLynk].[dbo].[Display_Type].[Display_Type_Id] as [dt].[Display_Type_Id]), [dt].[Display_Name]=ANY([IndusLynk].[dbo].[Display_Type].[Display_Name] as [dt].[Display_Name]), [Expr1034]=ANY([Expr1034]), [Expr1035]=ANY([Expr1035]), [Expr1036]=ANY([Expr1036]), [Expr1037]=ANY([Expr1037]))) 
               | |   |--Nested Loops(Inner Join, OUTER REFERENCES:([ci].[Candidate_Id])) 
               | |    |--Nested Loops(Inner Join, OUTER REFERENCES:([q].[Display_Type_Id])) 
               | |    | |--Nested Loops(Inner Join, OUTER REFERENCES:([i].[Question_Id])) 
               | |    | | |--Nested Loops(Inner Join, OUTER REFERENCES:([rr].[Item_ID])) 
               | |    | | | |--Nested Loops(Inner Join, WHERE:([IndusLynk].[dbo].[Candidate_Instance].[Instance_Status] as [ci].[Instance_Status]=[status])) 
               | |    | | | | |--Nested Loops(Inner Join, OUTER REFERENCES:([rr].[Candidate_Instance_ID])) 
               | |    | | | | | |--Compute Scalar(DEFINE:([Expr1034]=isnull([IndusLynk].[dbo].[Processed_Response].[Marks_Obtained] as [rr].[Marks_Obtained],(0.000000000000000e+000)), [Expr1035]=CASE WHEN [IndusLynk].[dbo].[Processed_Response].[Display_Type_ID] as [rr].[Display_Type_ID]=(2) THEN CASE WHEN [IndusLynk].[dbo].[Processed_Response].[IsAttempted] as [rr].[IsAttempted] IS NULL THEN CASE WHEN [IndusLynk].[dbo].[Processed_Response].[Response_Time] as [rr].[Response_Time]>(0.000000000000000e+000) THEN (1) ELSE (0) END ELSE CONVERT_IMPLICIT(int,isnull([IndusLynk].[dbo].[Processed_Response].[IsAttempted] as [rr].[IsAttempted],(0)),0) END ELSE CONVERT_IMPLICIT(int,isnull([IndusLynk].[dbo].[Processed_Response].[IsAttempted] as [rr].[IsAttempted],(0)),0) END, [Expr1036]=CASE WHEN [IndusLynk].[dbo].[Processed_Response].[Marks_Obtained] as [rr].[Marks_Obtained]>(0.000000000000000e+000) THEN (1) ELSE (0) END, [Expr1037]=isnull([IndusLynk].[dbo].[Processed_Response].[Response_Time] as [rr].[Response_Time],(0.000000000000000e+000)))) 
               | |    | | | | | | |--Clustered Index Scan(OBJECT:([IndusLynk].[dbo].[Processed_Response].[PK_Processed_Response] AS [rr]), WHERE:([IndusLynk].[dbo].[Processed_Response].[Assessment_ID] as [rr].[Assessment_ID]=[@AssessmentID] AND [IndusLynk].[dbo].[Processed_Response].[Client_ID] as [rr].[Client_ID]=[@UserID]) ORDERED FORWARD) 
               | |    | | | | | |--Clustered Index Seek(OBJECT:([IndusLynk].[dbo].[Candidate_Instance].[PK_Candidate_Instance] AS [ci]), SEEK:([ci].[Candidate_Instance_Id]=[IndusLynk].[dbo].[Processed_Response].[Candidate_Instance_ID] as [rr].[Candidate_Instance_ID]) ORDERED FORWARD) 
               | |    | | | | |--Table Scan(OBJECT:(@AssessmentStatuses)) 
               | |    | | | |--Clustered Index Seek(OBJECT:([IndusLynk].[dbo].[Item].[PK_Item] AS [i]), SEEK:([i].[Item_Id]=[IndusLynk].[dbo].[Processed_Response].[Item_ID] as [rr].[Item_ID]) ORDERED FORWARD) 
               | |    | | |--Clustered Index Seek(OBJECT:([IndusLynk].[dbo].[Question].[PK_Question] AS [q]), SEEK:([q].[Question_Id]=[IndusLynk].[dbo].[Item].[Question_Id] as [i].[Question_Id]) ORDERED FORWARD) 
               | |    | |--Clustered Index Seek(OBJECT:([IndusLynk].[dbo].[Display_Type].[PK_Display_Type] AS [dt]), SEEK:([dt].[Display_Type_Id]=[IndusLynk].[dbo].[Question].[Display_Type_Id] as [q].[Display_Type_Id]) ORDERED FORWARD) 
               | |    |--Clustered Index Seek(OBJECT:([IndusLynk].[dbo].[Candidate].[PK_Candidate] AS [c]), SEEK:([c].[Candidate_Id]=[IndusLynk].[dbo].[Candidate_Instance].[Candidate_Id] as [ci].[Candidate_Id]) ORDERED FORWARD) 
               | |--Clustered Index Seek(OBJECT:([IndusLynk].[dbo].[Item_Details].[PK_Item_Details] AS [id]), SEEK:([id].[Item_Id]=[IndusLynk].[dbo].[Processed_Response].[Item_ID] as [rr].[Item_ID]) ORDERED FORWARD) 
               |--Clustered Index Seek(OBJECT:([IndusLynk].[dbo].[Answer].[PK_Answer] AS [ans]), SEEK:([ans].[Answer_Id]=[IndusLynk].[dbo].[Item_Details].[Answer_Id] as [id].[Answer_Id]) ORDERED FORWARD) 
    |--Table Insert(OBJECT:(@SectionDetailTable), SET:([Candidate_Id] = [IndusLynk].[dbo].[Candidate].[Candidate_Id] as [c].[Candidate_Id],[Candidate_Instance_Id] = [IndusLynk].[dbo].[Processed_Response].[Candidate_Instance_ID] as [rr].[Candidate_Instance_ID],[Assessment_Id] = [IndusLynk].[dbo].[Processed_Response].[Assessment_ID] as [rr].[Assessment_ID],[OverAllScore] = [Expr1025],[Section_ID] = [IndusLynk].[dbo].[Processed_Response].[Section_ID] as [rr].[Section_ID],[Section_Name] = [Expr1028],[Section_Description] = [Expr1029],[AttempteCount] = [Expr1020],[CorrectCount] = [Expr1021],[Respone_Time] = [Expr1026],[TotaQuestionCount] = [Expr1023],[MaxMarks] = [Expr1027],[Percentile] = NULL)) 
     |--Compute Scalar(DEFINE:([Expr1025]=round([Expr1019],(2)), [Expr1026]=CASE WHEN [IndusLynk].[dbo].[Section].[Section_Duration] as [s].[Section_Duration]<>(0) THEN CASE WHEN [Expr1022]/(6.000000000000000e+001)>CONVERT_IMPLICIT(float(53),[IndusLynk].[dbo].[Section].[Section_Duration] as [s].[Section_Duration],0) THEN CONVERT_IMPLICIT(float(53),[IndusLynk].[dbo].[Section].[Section_Duration] as [s].[Section_Duration],0) ELSE [Expr1022]/(6.000000000000000e+001) END ELSE [Expr1022]/(6.000000000000000e+001) END, [Expr1027]=CONVERT(float(53),[Expr1024],0))) 
      |--Top(ROWCOUNT est 0) 
       |--Sort(ORDER BY:([ci].[Instance_End_Time] DESC, [rr].[Candidate_Instance_ID] DESC, [c].[Candidate_Id] ASC, [rr].[Section_ID] ASC)) 
         |--Compute Scalar(DEFINE:([Expr1028]=CONVERT_IMPLICIT(varchar(100),[IndusLynk].[dbo].[Section].[Section_Title] as [s].[Section_Title],0), [Expr1029]=CONVERT_IMPLICIT(varchar(100),[IndusLynk].[dbo].[Section].[Section_Description] as [s].[Section_Description],0))) 
          |--Compute Scalar(DEFINE:([Expr1023]=CONVERT_IMPLICIT(int,[Expr1047],0), [Expr1024]=CASE WHEN [Expr1048]=(0) THEN NULL ELSE [Expr1049] END)) 
           |--Stream Aggregate(GROUP BY:([rr].[Candidate_Instance_ID], [c].[First_Name], [c].[Last_Name], [rr].[Section_ID]) DEFINE:([Expr1047]=Count(*), [Expr1019]=SUM([Expr1030]), [Expr1020]=SUM([Expr1031]), [Expr1021]=SUM([Expr1032]), [Expr1022]=SUM([Expr1033]), [Expr1048]=COUNT_BIG(@ItemDetailTable.[MaxMarks] as [id].[MaxMarks]), [Expr1049]=SUM(@ItemDetailTable.[MaxMarks] as [id].[MaxMarks]), [ci].[Instance_End_Time]=ANY([IndusLynk].[dbo].[Candidate_Instance].[Instance_End_Time] as [ci].[Instance_End_Time]), [c].[Candidate_Id]=ANY([IndusLynk].[dbo].[Candidate].[Candidate_Id] as [c].[Candidate_Id]), [rr].[Assessment_ID]=ANY([IndusLynk].[dbo].[Processed_Response].[Assessment_ID] as [rr].[Assessment_ID]), [s].[Section_Title]=ANY([IndusLynk].[dbo].[Section].[Section_Title] as [s].[Section_Title]), [s].[Section_Description]=ANY([IndusLynk].[dbo].[Section].[Section_Description] as [s].[Section_Description]), [s].[Section_Duration]=ANY([IndusLynk].[dbo].[Section].[Section_Duration] as [s].[Section_Duration]))) 
            |--Nested Loops(Inner Join, WHERE:([IndusLynk].[dbo].[Processed_Response].[Candidate_Instance_ID] as [rr].[Candidate_Instance_ID]=@ItemDetailTable.[Candidate_Instance_Id] as [id].[Candidate_Instance_Id] AND [IndusLynk].[dbo].[Processed_Response].[Section_ID] as [rr].[Section_ID]=@ItemDetailTable.[Section_ID] as [id].[Section_ID] AND @ItemDetailTable.[Item_ID] as [id].[Item_ID]=[IndusLynk].[dbo].[Processed_Response].[Item_ID] as [rr].[Item_ID])) 
              |--Sort(ORDER BY:([rr].[Candidate_Instance_ID] ASC, [c].[First_Name] ASC, [c].[Last_Name] ASC, [rr].[Section_ID] ASC)) 
              | |--Nested Loops(Inner Join, OUTER REFERENCES:([ci].[Candidate_Id])) 
              |   |--Nested Loops(Left Semi Join, WHERE:([IndusLynk].[dbo].[Candidate_Instance].[Instance_Status] as [ci].[Instance_Status]=[status])) 
              |   | |--Nested Loops(Inner Join, OUTER REFERENCES:([rr].[Candidate_Instance_ID])) 
              |   | | |--Nested Loops(Inner Join, OUTER REFERENCES:([s].[Section_Id])) 
              |   | | | |--Nested Loops(Inner Join, OUTER REFERENCES:([rr].[Section_ID])) 
              |   | | | | |--Compute Scalar(DEFINE:([Expr1030]=isnull([IndusLynk].[dbo].[Processed_Response].[Marks_Obtained] as [rr].[Marks_Obtained],(0.000000000000000e+000)), [Expr1031]=CASE WHEN [IndusLynk].[dbo].[Processed_Response].[Display_Type_ID] as [rr].[Display_Type_ID]=(2) THEN CASE WHEN [IndusLynk].[dbo].[Processed_Response].[IsAttempted] as [rr].[IsAttempted] IS NULL THEN CASE WHEN [IndusLynk].[dbo].[Processed_Response].[Response_Time] as [rr].[Response_Time]>(0.000000000000000e+000) THEN (1) ELSE (0) END ELSE CONVERT_IMPLICIT(int,isnull([IndusLynk].[dbo].[Processed_Response].[IsAttempted] as [rr].[IsAttempted],(0)),0) END ELSE CONVERT_IMPLICIT(int,isnull([IndusLynk].[dbo].[Processed_Response].[IsAttempted] as [rr].[IsAttempted],(0)),0) END, [Expr1032]=CASE WHEN [IndusLynk].[dbo].[Processed_Response].[Marks_Obtained] as [rr].[Marks_Obtained]>(0.000000000000000e+000) THEN (1) ELSE (0) END, [Expr1033]=isnull([IndusLynk].[dbo].[Processed_Response].[Response_Time] as [rr].[Response_Time],(0.000000000000000e+000)))) 
              |   | | | | | |--Clustered Index Scan(OBJECT:([IndusLynk].[dbo].[Processed_Response].[PK_Processed_Response] AS [rr]), WHERE:([IndusLynk].[dbo].[Processed_Response].[Assessment_ID] as [rr].[Assessment_ID]=[@AssessmentID] AND [IndusLynk].[dbo].[Processed_Response].[Client_ID] as [rr].[Client_ID]=[@UserID])) 
              |   | | | | |--Index Seek(OBJECT:([IndusLynk].[dbo].[Section].[IX_Section] AS [s]), SEEK:([s].[Assessment_Id]=[@AssessmentID] AND [s].[Section_Id]=[IndusLynk].[dbo].[Processed_Response].[Section_ID] as [rr].[Section_ID]) ORDERED FORWARD) 
              |   | | | |--Clustered Index Seek(OBJECT:([IndusLynk].[dbo].[Section].[PK_Section] AS [s]), SEEK:([s].[Section_Id]=[IndusLynk].[dbo].[Section].[Section_Id] as [s].[Section_Id]) LOOKUP ORDERED FORWARD) 
              |   | | |--Clustered Index Seek(OBJECT:([IndusLynk].[dbo].[Candidate_Instance].[PK_Candidate_Instance] AS [ci]), SEEK:([ci].[Candidate_Instance_Id]=[IndusLynk].[dbo].[Processed_Response].[Candidate_Instance_ID] as [rr].[Candidate_Instance_ID]) ORDERED FORWARD) 
              |   | |--Table Scan(OBJECT:(@AssessmentStatuses)) 
              |   |--Clustered Index Seek(OBJECT:([IndusLynk].[dbo].[Candidate].[PK_Candidate] AS [c]), SEEK:([c].[Candidate_Id]=[IndusLynk].[dbo].[Candidate_Instance].[Candidate_Id] as [ci].[Candidate_Id]) ORDERED FORWARD) 
              |--Table Scan(OBJECT:(@ItemDetailTable AS [id])) 
    |--Table Insert(OBJECT:(@AssessmentDetailTable), SET:([Candidate_Id] = [IndusLynk].[dbo].[Candidate].[Candidate_Id] as [c].[Candidate_Id],[Candidate_Instance_Id] = [IndusLynk].[dbo].[Processed_Response].[Candidate_Instance_ID] as [rr].[Candidate_Instance_ID],[Assessment_Id] = [IndusLynk].[dbo].[Processed_Response].[Assessment_ID] as [rr].[Assessment_ID],[First_Name] = [IndusLynk].[dbo].[Candidate].[First_Name] as [c].[First_Name],[Last_Name] = [Expr1018],[OverAllScore] = [Expr1019],[Instance_Start_Time] = [Expr1020],[AttempteCount] = [Expr1015],[CorrectCount] = [Expr1016],[Respone_Time] = [Expr1021],[InvitationID] = [IndusLynk].[dbo].[Candidate_Instance].[Invitation_Id] as [ci].[Invitation_Id],[Email_ID] = [Expr1023],[RowNumber] = [Expr1024],[Percentile] = NULL)) 
     |--Compute Scalar(DEFINE:([Expr1024]=CONVERT_IMPLICIT(int,[Expr1022],0))) 
      |--Top(ROWCOUNT est 0) 
       |--Compute Scalar(DEFINE:([Expr1023]=CONVERT_IMPLICIT(varchar(50),[IndusLynk].[dbo].[Candidate].[Email_Id] as [c].[Email_Id],0))) 
         |--Sequence Project(DEFINE:([Expr1022]=row_number)) 
          |--Segment 
           |--Sort(ORDER BY:([ci].[Instance_End_Time] DESC, [rr].[Candidate_Instance_ID] DESC, [c].[Candidate_Id] ASC)) 
            |--Compute Scalar(DEFINE:([Expr1018]=isnull([IndusLynk].[dbo].[Candidate].[Last_Name] as [c].[Last_Name],''), [Expr1019]=round([Expr1014],(2)), [Expr1020]=isnull([IndusLynk].[dbo].[Candidate_Instance].[Instance_Start_Time] as [ci].[Instance_Start_Time],dateadd(minute, -[@AssessmentDuration],[IndusLynk].[dbo].[Candidate_Instance].[Instance_End_Time] as [ci].[Instance_End_Time])), [Expr1021]=CASE WHEN [Expr1017]/(6.000000000000000e+001)>CONVERT_IMPLICIT(float(53),[@AssessmentDuration],0) THEN CONVERT_IMPLICIT(float(53),[@AssessmentDuration],0) ELSE [Expr1017]/(6.000000000000000e+001) END)) 
              |--Stream Aggregate(GROUP BY:([c].[Email_Id], [rr].[Candidate_Instance_ID]) DEFINE:([Expr1014]=SUM([Expr1026]), [Expr1015]=SUM([Expr1027]), [Expr1016]=SUM([Expr1028]), [Expr1017]=SUM([Expr1029]), [ci].[Instance_End_Time]=ANY([IndusLynk].[dbo].[Candidate_Instance].[Instance_End_Time] as [ci].[Instance_End_Time]), [c].[Candidate_Id]=ANY([IndusLynk].[dbo].[Candidate].[Candidate_Id] as [c].[Candidate_Id]), [rr].[Assessment_ID]=ANY([IndusLynk].[dbo].[Processed_Response].[Assessment_ID] as [rr].[Assessment_ID]), [c].[First_Name]=ANY([IndusLynk].[dbo].[Candidate].[First_Name] as [c].[First_Name]), [c].[Last_Name]=ANY([IndusLynk].[dbo].[Candidate].[Last_Name] as [c].[Last_Name]), [ci].[Instance_Start_Time]=ANY([IndusLynk].[dbo].[Candidate_Instance].[Instance_Start_Time] as [ci].[Instance_Start_Time]), [ci].[Invitation_Id]=ANY([IndusLynk].[dbo].[Candidate_Instance].[Invitation_Id] as [ci].[Invitation_Id]))) 
               |--Sort(ORDER BY:([c].[Email_Id] ASC, [rr].[Candidate_Instance_ID] ASC)) 
                |--Nested Loops(Inner Join, OUTER REFERENCES:([ci].[Candidate_Id])) 
                 |--Nested Loops(Left Semi Join, WHERE:([IndusLynk].[dbo].[Candidate_Instance].[Instance_Status] as [ci].[Instance_Status]=[status])) 
                 | |--Nested Loops(Inner Join, OUTER REFERENCES:([rr].[Candidate_Instance_ID])) 
                 | | |--Compute Scalar(DEFINE:([Expr1026]=isnull([IndusLynk].[dbo].[Processed_Response].[Marks_Obtained] as [rr].[Marks_Obtained],(0.000000000000000e+000)), [Expr1027]=CASE WHEN [IndusLynk].[dbo].[Processed_Response].[Display_Type_ID] as [rr].[Display_Type_ID]=(2) THEN CASE WHEN [IndusLynk].[dbo].[Processed_Response].[IsAttempted] as [rr].[IsAttempted] IS NULL THEN CASE WHEN [IndusLynk].[dbo].[Processed_Response].[Response_Time] as [rr].[Response_Time]>(0.000000000000000e+000) THEN (1) ELSE (0) END ELSE CONVERT_IMPLICIT(int,isnull([IndusLynk].[dbo].[Processed_Response].[IsAttempted] as [rr].[IsAttempted],(0)),0) END ELSE CONVERT_IMPLICIT(int,isnull([IndusLynk].[dbo].[Processed_Response].[IsAttempted] as [rr].[IsAttempted],(0)),0) END, [Expr1028]=CASE WHEN [IndusLynk].[dbo].[Processed_Response].[Marks_Obtained] as [rr].[Marks_Obtained]>(0.000000000000000e+000) THEN (1) ELSE (0) END, [Expr1029]=isnull([IndusLynk].[dbo].[Processed_Response].[Response_Time] as [rr].[Response_Time],(0.000000000000000e+000)))) 
                 | | | |--Clustered Index Scan(OBJECT:([IndusLynk].[dbo].[Processed_Response].[PK_Processed_Response] AS [rr]), WHERE:([IndusLynk].[dbo].[Processed_Response].[Assessment_ID] as [rr].[Assessment_ID]=[@AssessmentID] AND [IndusLynk].[dbo].[Processed_Response].[Client_ID] as [rr].[Client_ID]=[@UserID])) 
                 | | |--Clustered Index Seek(OBJECT:([IndusLynk].[dbo].[Candidate_Instance].[PK_Candidate_Instance] AS [ci]), SEEK:([ci].[Candidate_Instance_Id]=[IndusLynk].[dbo].[Processed_Response].[Candidate_Instance_ID] as [rr].[Candidate_Instance_ID]) ORDERED FORWARD) 
                 | |--Table Scan(OBJECT:(@AssessmentStatuses)) 
                 |--Clustered Index Seek(OBJECT:([IndusLynk].[dbo].[Candidate].[PK_Candidate] AS [c]), SEEK:([c].[Candidate_Id]=[IndusLynk].[dbo].[Candidate_Instance].[Candidate_Id] as [ci].[Candidate_Id]) ORDERED FORWARD) 
    |--Table Insert(OBJECT:(@AssessmentFilteredTable), SET:([Candidate_Id] = [Candidate_Id],[Candidate_Instance_Id] = [Candidate_Instance_Id],[Assessment_Id] = [Assessment_Id],[First_Name] = [First_Name],[Last_Name] = [Last_Name],[OverAllScore] = [OverAllScore],[Instance_Start_Time] = [Instance_Start_Time],[AttempteCount] = [AttempteCount],[CorrectCount] = [CorrectCount],[Respone_Time] = [Respone_Time],[Percentile] = [Percentile],[RowNumber] = [Expr1009])) 
     |--Compute Scalar(DEFINE:([Expr1009]=CONVERT_IMPLICIT(int,[Expr1008],0))) 
      |--Top(ROWCOUNT est 0) 
       |--Sequence Project(DEFINE:([Expr1008]=row_number)) 
         |--Segment 
          |--Sort(ORDER BY:([RowNumber] ASC)) 

    |--Compute Scalar(DEFINE:([Expr1003]=CASE WHEN @SectionDetailTable.[OverAllScore] as [i].[OverAllScore]>(0.000000000000000e+000) THEN isnull(@SectionDetailTable.[Percentile] as [i].[Percentile],(1.000000000000000e+002)) ELSE isnull(@SectionDetailTable.[Percentile] as [i].[Percentile],(0.000000000000000e+000)) END)) 
     |--Table Scan(OBJECT:(@SectionDetailTable AS [i])) 
    |--Compute Scalar(DEFINE:([Expr1004]=CASE WHEN [OverAllScore]>(0.000000000000000e+000) THEN isnull([Percentile],(1.000000000000000e+002)) ELSE isnull([Percentile],(0.000000000000000e+000)) END)) 
     |--Table Scan(OBJECT:(@AssessmentDetailTable)) 
    |--Compute Scalar(DEFINE:([Expr1006]=[Expr1004])) 
     |--Compute Scalar(DEFINE:([Expr1004]=CONVERT_IMPLICIT(int,[Expr1009],0))) 
      |--Stream Aggregate(DEFINE:([Expr1009]=Count(*))) 
       |--Table Scan(OBJECT:(@AssessmentDetailTable)) 

Answer 1

SPs sont précompilés, il peut être qu'un plan de requête « mauvais » est utilisé qui est pas bon pour les arguments passés dans la SP. Vous pouvez ajouter un OPTION (RECOMPILE) aux requêtes dans le SP pour forcer SQL Server à réexécuter la requête via l'optimiseur de requête et trouver la meilleure requête pour les paramètres donnés.

Voir here ou here quelques exemples et informations de fond ...