那些遇到过的问题

在SQL Server 2005中查询XML时,文档的多个标记位于同一行

Neb*_*eru 5 xml sql-server sql-server-2005 xquery-sql

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>
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好的,为了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
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这就是我得到的结果.

\\SASSOAPPSRV\Grower XML Files\SA1611030B.xml   SA1611030B  SA1611030B1
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这是问题,因为我需要在单独的行中查看来自节点的两个副本的数据.

所以我有许多具有以下结构的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>
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我已经导入临时表的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
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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
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什么时候应该 

RunID       |   SectionID
-----------------------------
SA0111023B  |    SA0111023B1  
SA0111023B  |    SA0111023B9
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如果我有[1]然后结束这样的xml查询

CAST(XML_DATA.query('data(/Grower_Run/Crucible/Section/Grower_Run_Section/SectionID)')[1]
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它会将第二部分ID全部放在一起但这不起作用因为我需要两者.

有帮助吗？

mar*_*c_s 4

如果您想从 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)
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该子句中的 XPath 语句FROM基本上定义了 XML 元素的“伪表”——基于该 XPath。因此，在这里您将获得 XML 中每个条目的伪表<Section>- 然后您可以使用该.value()函数从中选择单个元素。

如果您想从包含类型列的表中选择它XML，您可能需要检查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)
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  • *叮*，你刚刚帮我得到了它。我刚刚将 Grower_Run_Section 向下移动到伪表声明，因为它是我需要枚举的节点。 (2认同)

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