更新以提供说明
这是我遇到问题的一个xml文件的完整副本。
<Grower_Run xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Puller xsi:type="Puller">
<Puller_Number xsi:type="xsd:int">16</Puller_Number>
</Puller>
<Run_ID xsi:type="xsd:string">SA1611030B</Run_ID>
<Crucible xsi:type="Crucible">
<Crucible_Type xsi:type="xsd:string">RWNTYPE</Crucible_Type>
<Section>
<Grower_Run_Section>
<SectionID xsi:type="xsd:string">SA1611030B1</SectionID>
<Crystal_Growth>
<Growth_StartTime xsi:type="xsd:dateTime">2011-03-01T12:59:30</Growth_StartTime>
<Growth_Process>
<Growth_Process>
<Process_Name xsi:type="xsd:string">BODY</Process_Name>
<Single_Moment_Snapshot>
<Single_Moment_Snapshot>
<Snapshot_Name xsi:type="xsd:string">Body Start</Snapshot_Name>
<Snapshot_Datetime xsi:type="xsd:dateTime">2011-03-01T17:11:30</Snapshot_Datetime>
<Ingot_Length xsi:type="xsd:decimal">228.19</Ingot_Length>
<Heater_Temp xsi:type="xsd:decimal">1337.09</Heater_Temp>
<LS_Temp xsi:type="xsd:decimal">1243.00</LS_Temp>
<Heater_Power xsi:type="xsd:decimal">56.10</Heater_Power>
</Single_Moment_Snapshot>
<Single_Moment_Snapshot>
<Snapshot_Name xsi:type="xsd:string">Mid Body</Snapshot_Name>
<Snapshot_Datetime xsi:type="xsd:dateTime">2011-03-01T17:11:30</Snapshot_Datetime>
<Ingot_Length xsi:type="xsd:decimal">228.19</Ingot_Length>
<Heater_Temp xsi:type="xsd:decimal">1337.09</Heater_Temp>
<LS_Temp xsi:type="xsd:decimal">1243.00</LS_Temp>
<Heater_Power xsi:type="xsd:decimal">56.10</Heater_Power>
</Single_Moment_Snapshot>
<Single_Moment_Snapshot>
<Snapshot_Name xsi:type="xsd:string">Tail Start</Snapshot_Name>
<Snapshot_Datetime xsi:type="xsd:dateTime">2011-03-02T01:34:24</Snapshot_Datetime>
<Ingot_Length xsi:type="xsd:decimal">230.40</Ingot_Length>
<Heater_Temp xsi:type="xsd:decimal">1338.20</Heater_Temp>
<LS_Temp xsi:type="xsd:decimal">1243.40</LS_Temp>
<Heater_Power xsi:type="xsd:decimal">56.39</Heater_Power>
</Single_Moment_Snapshot>
</Single_Moment_Snapshot>
</Growth_Process>
</Growth_Process>
<Growth_FinishTime xsi:type="xsd:dateTime">2011-03-02T01:35:24</Growth_FinishTime>
</Crystal_Growth>
</Grower_Run_Section>
<Grower_Run_Section>
<SectionID xsi:type="xsd:string">SA1611030B9</SectionID>
<Crystal_Growth>
<Growth_StartTime xsi:type="xsd:dateTime">2011-03-02T04:02:37</Growth_StartTime>
<Growth_Process>
<Growth_Process>
<Process_Name xsi:type="xsd:string">BODY</Process_Name>
<Single_Moment_Snapshot>
<Single_Moment_Snapshot>
<Snapshot_Name xsi:type="xsd:string">Body Start</Snapshot_Name>
<Snapshot_Datetime xsi:type="xsd:dateTime">2011-03-02T07:54:39</Snapshot_Datetime>
<Ingot_Length xsi:type="xsd:decimal">231.80</Ingot_Length>
<Heater_Temp xsi:type="xsd:decimal">1340.00</Heater_Temp>
<LS_Temp xsi:type="xsd:decimal">1246.70</LS_Temp>
<Heater_Power xsi:type="xsd:decimal">56.60</Heater_Power>
</Single_Moment_Snapshot>
<Single_Moment_Snapshot>
<Snapshot_Name xsi:type="xsd:string">Mid Body</Snapshot_Name>
<Snapshot_Datetime xsi:type="xsd:dateTime">2011-03-02T07:54:39</Snapshot_Datetime>
<Ingot_Length xsi:type="xsd:decimal">231.80</Ingot_Length>
<Heater_Temp xsi:type="xsd:decimal">1340.00</Heater_Temp>
<LS_Temp xsi:type="xsd:decimal">1246.70</LS_Temp>
<Heater_Power xsi:type="xsd:decimal">56.60</Heater_Power>
</Single_Moment_Snapshot>
<Single_Moment_Snapshot>
<Snapshot_Name xsi:type="xsd:string">Tail Start</Snapshot_Name>
<Snapshot_Datetime xsi:type="xsd:dateTime">2011-03-03T06:47:19</Snapshot_Datetime>
<Ingot_Length xsi:type="xsd:decimal">1778.00</Ingot_Length>
<Heater_Temp xsi:type="xsd:decimal">1388.80</Heater_Temp>
<LS_Temp xsi:type="xsd:decimal">1330.70</LS_Temp>
<Heater_Power xsi:type="xsd:decimal">63.50</Heater_Power>
</Single_Moment_Snapshot>
</Single_Moment_Snapshot>
</Growth_Process>
</Growth_Process>
<Growth_FinishTime xsi:type="xsd:dateTime">2011-03-03T06:48:19</Growth_FinishTime>
</Crystal_Growth>
</Grower_Run_Section>
</Section>
</Crucible>
</Grower_Run>
好的，所以澄清这里是我的完整查询。
DECLARE @FILES TABLE(FILENAME VARCHAR(20),DEPTH INT,FILE_FLAG INT)
DECLARE @XML_TABLE TABLE(
xmlFileName VARCHAR(300),
xml_data xml
)
DECLARE @xmlFileName VARCHAR(300)
DECLARE @FILENAME VARCHAR(20)
INSERT INTO @FILES
EXEC Master.dbo.xp_DirTree '\\SASSOAPPSRV\Grower XML Files\',1,1
DECLARE XML_CURSOR CURSOR FOR SELECT FILENAME FROM @FILES
OPEN XML_CURSOR
FETCH NEXT FROM XML_CURSOR
INTO @FILENAME
WHILE @@FETCH_STATUS = 0
BEGIN
SELECT @xmlFileName = '\\SASSOAPPSRV\Grower XML Files\' + @FILENAME
INSERT INTO @XML_TABLE(xmlFileName, xml_data)
EXEC('
SELECT ''' + @xmlFileName + ''', xmlData
FROM
(
SELECT *
FROM OPENROWSET (BULK ''' + @xmlFileName + ''' , SINGLE_BLOB) AS XMLDATA
) AS FileImport (XMLDATA)
')
FETCH NEXT FROM XML_CURSOR
INTO @FILENAME
END
CLOSE XML_CURSOR
DEALLOCATE XML_CURSOR
DECLARE @PARSED_XML TABLE(
S VARCHAR(200),
RUN_ID VARCHAR(20)
,SECTION_ID VARCHAR(50)
)
INSERT INTO @PARSED_XML
SELECT
T.xmlFileName AS S,
t.xml_data.value('(/Grower_Run/Run_ID)[1]', 'varchar(50)') AS 'RunID',
Section.value('(Grower_Run_Section/SectionID)[1]', 'varchar(50)') as 'SectionID'
FROM
@xml_table t
CROSS APPLY
t.xml_data.nodes('/Grower_Run/Crucible/Section') AS Tmp(Section)
SELECT
S
,RUN_ID
,SECTION_ID
FROM @PARSED_XML
WHERE RUN_ID = 'SA1611030B'
ORDER BY RUN_ID
这就是我得到的结果。
\\SASSOAPPSRV\Grower XML Files\SA1611030B.xml SA1611030B SA1611030B1
这是问题，因为我需要在不同的行中查看来自节点的两个副本的数据。
所以我有很多具有以下结构的XML文档
<Grower_Run xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Run_ID xsi:type="xsd:string">SA0111023B</Run_ID>
<Crucible xsi:type="Crucible">
<Section>
<Grower_Run_Section>
<SectionID xsi:type="xsd:string">SA0111023B1</SectionID>
</Grower_Run_Section>
</Section>
<Section>
<Grower_Run_Section>
<SectionID xsi:type="xsd:string">SA0111023B9</SectionID>
</Grower_Run_Section>
</Section>
</Crucible>
</Grower_Run>
我已导入临时表的XML字段，我正在使用这样的查询来查询
SELECT
CAST(XML_DATA.query('data(/Grower_Run/Run_ID)') AS VARCHAR(20)) AS [RUN ID]
,CAST(XML_DATA.query('data(/Grower_Run/Crucible/Section/Grower_Run_Section/SectionID)') AS VARCHAR(50)) AS [SECTION ID]
FROM @XML_TABLE
所以问题是我的“SectionID”标签的多个实例的结果显示在同一行。
即
RunID | SectionID
--------------------------
SA0111023B | SA0111023B1 SA0111023B9
什么时候应该
RunID | SectionID
-----------------------------
SA0111023B | SA0111023B1
SA0111023B | SA0111023B9
如果我有[1]那么结束xml查询就像这样
CAST(XML_DATA.query('data(/Grower_Run/Crucible/Section/Grower_Run_Section/SectionID)')[1]
它会将第二部分ID全部放在一起但是不起作用因为我需要两者。
任何帮助？
答案 0 :(得分：4)
如果要从XML文档中选择多个“行”，则需要使用.nodes() SQL Server XML函数 - 如下所示：
SELECT
@XMLTable.value('(/Grower_Run/Run_ID)[1]', 'varchar(50)') AS 'RunID',
Section.value('(Grower_Run_Section/SectionID)[1]', 'varchar(50)') as 'SectionID'
FROM
@XMLTable.nodes('/Grower_Run/Crucible/Section') AS Tmp(Section)
FROM子句中的XPath语句基本上定义了XML元素的“伪表” - 基于该XPath。因此，您可以在XML中为每个<Section>条目获取一个伪表 - 然后您可以使用.value()函数从中选择单个元素。
如果要从包含XML类型列的表中选择，可能需要检查CROSS APPLY命令：
SELECT
t.SomeColumn,
t.XmlColumn.value('(/Grower_Run/Run_ID)[1]', 'varchar(50)') AS 'RunID',
Section.value('(Grower_Run_Section/SectionID)[1]', 'varchar(50)') as 'SectionID'
FROM
dbo.YourTable t
CROSS APPLY
t.XmlColumn.nodes('/Grower_Run/Crucible/Section') AS Tmp(Section)
答案 1 :(得分：1)
这将起作用......，例如：
pref.value('(OriginatorAgency/text())[1]','varchar(50)'),
pref.value('(OriginatorAgency/text())[2]','varchar(50)'),
pref.value('(OriginatorAgency/text())[3]','varchar(50)')
如果有3个OriginatorAgency项目。