我有一个查询,可以很好地将XML数据引入SQL表(通常)。我当前的问题是我尝试将此查询与更大的XML文件一起使用,并且它最大化了我的tempdb(和磁盘空间)并且失败了。有人可以帮忙吗?
;WITH XMLNAMESPACES(DEFAULT 'http://www.adc.ca/ETS/v3')
INSERT INTO [CC-DB].[dbo].[TourTimeLogs] ([Rig],[Job],[Date],[Sheet],[Rev],[TourID],[StartTime],[EndTime],[Mins],[Code],[Detail])
SELECT
RIG = XC.value('(../../../../../../Rig/RigId)[1]', 'varchar(100)'),
JOB = XC.value('(../../../../../../JobNo)[1]', 'varchar(100)'),
DATE = XC.value('(../../../../Date)[1]', 'date'),
SHEET = XC.value('(../../../../SheetNo)[1]', 'varchar(100)'),
REV = XC.value('(../../../../Revision)[1]', 'varchar(100)'),
TOURID = XC.value('(../../@tourId)[1]', 'varchar(100)'),
STARTTIME = XC.value('(FromTime)[1]', 'datetime'),
ENDTIME = XC.value('(ToTime)[1]', 'datetime'),
MINS = datediff(minute, XC.value('(FromTime)[1]', 'datetime'), XC.value('(ToTime)[1]', 'datetime')),
TIMECODE = XC.value('(TimeCodeNo)[1]', 'varchar(100)'),
DETAIL = XC.value('(Detail)[1]', 'varchar(100)')
FROM
[CC-DB].[dbo].[XmlSourceTable] SRC
CROSS APPLY
SRC.XmlData.nodes('/ETS/WellTours/WellTour/DayTours/DayTour/Tours/Tour/TimeLogs/TimeLog') AS XT(XC)
答案 0 :(得分:1)
如果没有实际的XML,那就是阅读魔术玻璃灯泡,但我会尝试一下:
致电
.nodes('/ETS/WellTours/WellTour/DayTours/DayTour/Tours/Tour/TimeLogs/TimeLog')
告诉我,有一个XML具有根节点 ETS 和嵌套的 1:n-structure WellTours , DayTours , Tours 和 TimeLogs 。
您可以尝试这样的事情:
;WITH XMLNAMESPACES(DEFAULT 'http://www.adc.ca/ETS/v3')
INSERT INTO [CC-DB].[dbo].[TourTimeLogs] ([Rig],[Job],[Date],[Sheet],[Rev],[TourID],[StartTime],[EndTime],[Mins],[Code],[Detail])
SELECT
RIG = WT.value('(Rig/RigId)[1]', 'varchar(100)'),
JOB = WT.value('(JobNo)[1]', 'varchar(100)'),
[DATE] = DT.value('(Date)[1]', 'date'),
SHEET = DT.value('(SheetNo)[1]', 'varchar(100)'),
REV = DT.value('(Revision)[1]', 'varchar(100)'),
TOURID = T.value('@tourId', 'varchar(100)'),
STARTTIME = TL.value('(FromTime)[1]', 'datetime'),
ENDTIME = TL.value('(ToTime)[1]', 'datetime'),
MINS = datediff(minute, TL.value('(FromTime)[1]', 'datetime'), TL.value('(ToTime)[1]', 'datetime')),
TIMECODE = TL.value('(TimeCodeNo)[1]', 'varchar(100)'),
DETAIL = TL.value('(Detail)[1]', 'varchar(100)')
FROM
[CC-DB].[dbo].[XmlSourceTable] SRC
CROSS APPLY
SRC.XmlData.nodes('/ETS/WellTours/WellTour') AS A(WT)
CROSS APPLY
WT.nodes('DayTours/DayTour') AS B(DT)
CROSS APPLY
DT.nodes('Tours/Tour') AS C(T)
CROSS APPLY
T.nodes('TimeLogs/TimeLog') AS D(TL)
关注如果没有返回任何内容,请尝试使用OUTER APPLY
。没有真正的XML来测试它,它是盲目飞行 ......
如此阅读:
<WellTour>
- 元素<DayTour>
- 每个<WellTour>
下面的元素<Tour>
- 每个<DayTour>
下面的元素<TimeLog>
- 每个<Tour>
下面的元素从实际级别读取数据。不要向后跳。 XML最好是仅向前(如果可能)。