我将所有数据都存储在SQL Server 2005的XML列中。加快SQL Server 2005中的XML查询
随着越来越多的记录被插入,我注意到查询速度变慢了。我试过创建一个主要的XML索引,以及一个辅助的VALUE索引,这对于提高速度没有任何帮助。
我失踪的任何提示,想法或窍门?
样品查看,我查询:
SELECT Id
, CaseNumber
, XmlTest.value('(/CodeFiveReport/ReportEvent/StartDate)[1]', 'varchar(25)') + ' ' + XmlTest.value('(/CodeFiveReport/ReportEvent/StartTime)[1]', 'varchar(25)') as StartDate
, XmlTest.value('(/CodeFiveReport/@Status)[1]', 'varchar(10)') as [Status]
, XmlTest.value('(/CodeFiveReport/ReportEvent/Address/PatrolDistrict/@Name)[1]', 'varchar(100)') as PatrolDistrict
, XmlTest.value('(/CodeFiveReport/PrimaryUnit/@Name)[1]', 'varchar(40)') as PrimaryUnit
, XmlTest.value('(/CodeFiveReport/ReportEvent/Address/@StreetNumber)[1]', 'varchar(50)') + ' ' + XmlTest.value('(/CodeFiveReport/ReportEvent/Address/@StreetName)[1]', 'varchar(50)') + ' ' + XmlTest.value('(/CodeFiveReport/ReportEvent/Address/StreetSuffix/@Name)[1]', 'varchar(50)') + ' ' + XmlTest.value('(/CodeFiveReport/ReportEvent/Address/@City)[1]', 'varchar(50)') + ' ' + XmlTest.value('(/CodeFiveReport/ReportEvent/Address/State/@Abbreviation)[1]', 'varchar(50)') + ' ' + XmlTest.value('(/CodeFiveReport/ReportEvent/Address/@ZipCode)[1]', 'varchar(50)') as Location
, XmlTest.value('(/CodeFiveReport/ReportEvent/ReportType/@Name)[1]', 'varchar(50)') as ReportType
, XmlTest.value('(/CodeFiveReport/ReportEvent/Offenses/OffenseDescription/OffenseType/@CodeAndDescription)[1]', 'varchar(50)') as IncidentType
, XmlTest as Report
, CreatedBy as UserId
, XmlTest.value('(/CodeFiveReport/PrimaryUnit/@ID)[1]', 'integer') as UnitId
, XmlTest.value('(/CodeFiveReport/PrimaryUnit/@Code)[1]', 'varchar(6)') as UnitCode
, XmlTest.value('(/CodeFiveReport/Owner/AgencyID)[1]', 'char(2)') as AgencyId
, IsLocked
, LockedBy
, XmlTest.value('(/CodeFiveReport/VersionUsed)[1]', 'varchar(20)') as VersionUsed
FROM UploadReport
WHERE XmlTest.value('(/CodeFiveReport/Owner/AgencyID)[1]', 'char(2)') = '06'
你可以加速多一点,看我的回复 – CaffGeek 2010-09-16 17:02:35