我有以下查询，8179 条记录大约需要 39 秒。
SELECT PT.P_Name as Prisoner_Type, PE.PID_No,PE.Jail_Code,PE.Entry_Year,Convert(varchar(10),PE.Admission_Date,103) Admission_Date,
PE.JID_No,Convert(varchar(10),PE.Release_Date,103) Release_Date
, PM.Prisoner_Name, SUBSTRING(PM.Father_Name, 0, 17)as Father_Name, PM.Mother_Name,PM.Spouse_Name,PM.Caste_Code, PM.Religion_Code
,PM.Occupation_Code,PM.Qualification,PM.Tendency_Type,PM.Risk_Type,PM.Annual_Income_Code,PM.Marital_Status_Code,PM.Id_Mark
, PM.Sex_Code,PM.Nationality_Code,PM.Off_Code,PM.Present_Add, Age as age ,PM.Permt_Add
, LS.Location AS Location
,NT.Nation_Name
, JT.Jail_Address
,OT.Offence_Name
,QT.Qualification as quali
,IT.Annual_Income_Range
,CT.Caste_Name
,RT.Religion_Name
,MT.Marital_Status_Name
,OFT.Occ_Name AS Occupation
, STUFF(( SELECT ', ' + cc.Act_Sec AS [text()] FROM CourtCases cc WHERE cc.PID_NO = PE.PID_NO and cc.Case_No in (SELECT value from fnNTextToIntTable(pe.Case_No)) group by cc.Act_Sec FOR XML PATH('') ),1, 1, '' ) AS [Act_Sec]
, STUFF(( SELECT ', ' + Convert(varchar(10),CC.Fir_Date,103) AS [text()] FROM CourtCases cc WHERE cc.PID_NO = PE.PID_NO and cc.Case_No in (SELECT value from fnNTextToIntTable(pe.Case_No)) group by Convert(varchar(10),CC.Fir_Date,103) FOR XML PATH('') ),1, 1, '' ) AS [Fir_Date]
,STUFF(( SELECT ', ' + FIR_No AS [text()] FROM CourtCases cc WHERE cc.PID_NO = PE.PID_NO and cc.Case_No in (SELECT value from fnNTextToIntTable(pe.Case_No)) group by FIR_No FOR XML PATH('') ),1, 1, '' ) AS [FIR_No]
, STUFF(( SELECT ', ' + ct.Court_Name AS [text()] FROM CourtCases cc inner join Court_Tab as ct ON cc.Court_Code=convert(nvarchar(50),ct.Court_Code) WHERE cc.PID_NO = PE.PID_NO and cc.Case_No in (SELECT value from fnNTextToIntTable(pe.Case_No)) group by ct.Court_Name FOR XML PATH('') ),1, 1, '' ) AS [Court_Name]
, STUFF(( SELECT ', ' + pt.PS_Name AS [text()] FROM CourtCases cc inner join PS_Tab as pt ON convert(nvarchar(50),cc.PS_Code)=convert(nvarchar(50),pt.PS_Code) WHERE cc.PID_NO = PE.PID_NO and cc.Case_No in (SELECT value from fnNTextToIntTable(pe.Case_No)) group by pt.PS_Name FOR XML PATH('') ),1, 1, '' ) AS [PS_Name]
FROM PrisonMaster AS PM INNER JOIN PrisonerEntry AS PE ON PE.PID_No = PM.PID_No AND PE.Jail_Code=141INNER JOIN Nation_Tab AS NT ON PM.Nationality_Code = NT.Nation_Code
INNER JOIN Sex_Tab AS S ON PM.Sex_Code = S.Sex_Code
INNER JOIN Jail_Tab AS JT ON PE.Jail_Code = JT.Jail_Code
INNER JOIN Prisoner_Tab AS PT ON PE.Prisoner_Type=PT.P_Type
INNER JOIN Loc_Status AS LS ON PE.Location=LS.Loc_Status
left JOIN Offence_Tab AS OT ON OT.Offence_Code=PM.Occupation_Code
left JOIN Qualification_Tab AS QT ON QT.Q_Code=PM.Qualification
left JOIN Income_Tab AS IT ON IT.Annual_Income_Code=PM.Annual_Income_Code
left JOIN Caste_Tab AS CT ON CT.Caste_Code=PM.Caste_Code
LEFT JOIN Religion_Tab AS RT ON RT.Religion_Code=PM.Religion_Code
LEFT JOIN Marital_Tab AS MT ON MT.Marital_Status_Code=PM.Marital_Status_Code
LEFT JOIN Occupation_Tab AS OFT ON OFT.Occ_Code=PM.Occupation_Code
WHERE PE.Admission_Date BETWEEN convert(datetime,'Jan 1 2009 12:00AM',103) and convert(datetime,'Dec 31 2009 12:00AM',103)order by PE.PID_No
如果我 commnet 出for xml path 5 列，它会在 1 秒内运行。
, STUFF(( SELECT ', ' + cc.Act_Sec AS [text()] FROM CourtCases cc WHERE cc.PID_NO = PE.PID_NO and cc.Case_No in (SELECT value from fnNTextToIntTable(pe.Case_No)) group by cc.Act_Sec FOR XML PATH('') ),1, 1, '' ) AS [Act_Sec]
, STUFF(( SELECT ', ' + Convert(varchar(10),CC.Fir_Date,103) AS [text()] FROM CourtCases cc WHERE cc.PID_NO = PE.PID_NO and cc.Case_No in (SELECT value from fnNTextToIntTable(pe.Case_No)) group by Convert(varchar(10),CC.Fir_Date,103) FOR XML PATH('') ),1, 1, '' ) AS [Fir_Date]
,STUFF(( SELECT ', ' + FIR_No AS [text()] FROM CourtCases cc WHERE cc.PID_NO = PE.PID_NO and cc.Case_No in (SELECT value from fnNTextToIntTable(pe.Case_No)) group by FIR_No FOR XML PATH('') ),1, 1, '' ) AS [FIR_No]
, STUFF(( SELECT ', ' + ct.Court_Name AS [text()] FROM CourtCases cc inner join Court_Tab as ct ON cc.Court_Code=convert(nvarchar(50),ct.Court_Code) WHERE cc.PID_NO = PE.PID_NO and cc.Case_No in (SELECT value from fnNTextToIntTable(pe.Case_No)) group by ct.Court_Name FOR XML PATH('') ),1, 1, '' ) AS [Court_Name]
, STUFF(( SELECT ', ' + pt.PS_Name AS [text()] FROM CourtCases cc inner join PS_Tab as pt ON convert(nvarchar(50),cc.PS_Code)=convert(nvarchar(50),pt.PS_Code) WHERE cc.PID_NO = PE.PID_NO and cc.Case_No in (SELECT value from fnNTextToIntTable(pe.Case_No)) group by pt.PS_Name FOR XML PATH('') ),1, 1, '' ) AS [PS_Name]
我如何组合这五列以便优化查询。我已经在所有表PID_No上创建了索引。Case_No
和查询中的这一部分
and cc.Case_No in (SELECT value from fnNTextToIntTable(pe.Case_No))
因为监狱表有逗号分隔 Case_No