Sql server 如何解析SQL Server中存储在列中的XML_Sql Server_Xml_Parsing

Sql server 如何解析SQL Server中存储在列中的XML

sql-server xml parsing

Sql server 如何解析SQL Server中存储在列中的XML,sql-server,xml,parsing,Sql Server,Xml,Parsing,我想解析存储在SQL Server列中的XML： XML是： <?xml version="1.0" encoding="UTF-8"?> <propertylist id="root"> <property expanded="Y" id="createsdi" selectedindex="0" type="

我想解析存储在SQL Server列中的XML：

XML是：

 <?xml version="1.0" encoding="UTF-8"?>
    <propertylist id="root">
       <property expanded="Y" id="createsdi" selectedindex="0" type="collection">
          <collection>
             <propertylist id="1305619640064">
                <property expanded="Y" id="columnvalues" selectedindex="0" type="collection">
                   <collection>
                      <propertylist id="1396440519721" />
                   </collection>
                </property>
                <property expanded="Y" id="tests" selectedindex="0" type="collection">
                   <collection>
                      <propertylist id="p1602059752707" sequence="1000000">
                         <property id="id" type="simple"><![CDATA[item1]]></property>
                         <property id="workitemid" type="simple"><![CDATA[SOURAVTESTER|1]]></property>
                      </propertylist>
                   </collection>
                </property>
                <property expanded="Y" id="specs" selectedindex="0" type="collection">
                   <collection>
                      <propertylist id="p1602059825237" sequence="1000000">
   

                  <property id="id" type="simple"><![CDATA[item1]]></property>
                     <property id="specid" type="simple"><![CDATA[EMSpec|1]]></property>
                  </propertylist>
               </collection>
            </property>
         </propertylist>
      </collection>
   </property>
   <property expanded="Y" id="workorder" type="propertylist">
      <propertylist id="root_0">
         <property expanded="Y" id="graceperiod" type="propertylist">
            <propertylist id="root_0_workorder_0">
               <property expanded="Y" id="graceperiod" type="propertylist">
                  <propertylist id="root_0_workorder_0_graceperiod_0" />
               </property>
               <property expanded="Y" id="deviation" type="propertylist">
                  <propertylist id="root_0_workorder_0_graceperiod_0" />
               </property>
            </propertylist>
         </property>
      </propertylist>
   </property>
</propertylist>

但我犯了个错误

XMLDT方法“节点”只能在xml类型的列上调用

结果应该是：

workitemid  SOURAVTESTER
specid      EMSpec

请尝试以下解决方案

它做了以下工作：

删除使用UTF-8编码的XML prolog。SQLServer隐式地将任何XML在内部转换为UTF-16
将NVARCHAR（）数据类型转换为XML数据类型。在那之后，XQuery 处理XML的方法变得可用

SQL

-- DDL and sample data population, start
DECLARE @tbl TABLE (ID INT IDENTITY PRIMARY KEY, col NVARCHAR(MAX));
INSERT INTO @tbl (col) VALUES
(N'<?xml version="1.0" encoding="UTF-8"?>
<propertylist id="root">
    <property expanded="Y" id="createsdi" selectedindex="0" type="collection">
        <collection>
            <propertylist id="1305619640064">
                <property expanded="Y" id="columnvalues" selectedindex="0"
                          type="collection">
                    <collection>
                        <propertylist id="1396440519721"/>
                    </collection>
                </property>
                <property expanded="Y" id="tests" selectedindex="0"
                          type="collection">
                    <collection>
                        <propertylist id="p1602059752707" sequence="1000000">
                            <property id="id" type="simple"><![CDATA[item1]]></property>
                            <property id="workitemid" type="simple"><![CDATA[SOURAVTESTER|1]]></property>
                        </propertylist>
                    </collection>
                </property>
                <property expanded="Y" id="specs" selectedindex="0"
                          type="collection">
                    <collection>
                        <propertylist id="p1602059825237" sequence="1000000">


                            <property id="id" type="simple"><![CDATA[item1]]></property>
                            <property id="specid" type="simple"><![CDATA[EMSpec|1]]></property>
                        </propertylist>
                    </collection>
                </property>
            </propertylist>
        </collection>
    </property>
    <property expanded="Y" id="workorder" type="propertylist">
        <propertylist id="root_0">
            <property expanded="Y" id="graceperiod" type="propertylist">
                <propertylist id="root_0_workorder_0">
                    <property expanded="Y" id="graceperiod" type="propertylist">
                        <propertylist id="root_0_workorder_0_graceperiod_0"/>
                    </property>
                    <property expanded="Y" id="deviation" type="propertylist">
                        <propertylist id="root_0_workorder_0_graceperiod_0"/>
                    </property>
                </propertylist>
            </property>
        </propertylist>
    </property>
</propertylist>')
, (NULL);
-- DDL and sample data population, end

--DECLARE @startPos INT = LEN('<?xml version="1.0" encoding="utf-8"?>') + 1;
DECLARE @prolog NVARCHAR(100) = '<?xml version="1.0" encoding="utf-8"?>';

;WITH rs AS
(
    SELECT ID
        --, TRY_CAST(SUBSTRING(col
        --  , @startPos
        --  , LEN(col)) AS XML) AS xmldata
        , TRY_CAST('<root>' + REPLACE(col, @prolog, '') + '</root>' AS XML) AS xmldata  FROM @tbl
)
SELECT ID
    , c.value('(./text())[1]', 'VARCHAR(100)') AS Item
FROM rs
    CROSS APPLY xmldata.nodes('//property[@id=("specid","workitemid")]') AS t(c);

请编辑您的文章并指定所需的输出。有一列包含所有XML。我必须检查所有XML并找到值。请检查描述中附带的图像。@sourav，您有责任提供DDL和样本数据填充。不是IT的图片。@sourav，我调整了答案。'Table column with XML在此图片中'-请检查上面的链接，先生。@sourav，我调整了答案。过来看。

-- DDL and sample data population, start
DECLARE @tbl TABLE (ID INT IDENTITY PRIMARY KEY, col NVARCHAR(MAX));
INSERT INTO @tbl (col) VALUES
(N'<?xml version="1.0" encoding="UTF-8"?>
<propertylist id="root">
    <property expanded="Y" id="createsdi" selectedindex="0" type="collection">
        <collection>
            <propertylist id="1305619640064">
                <property expanded="Y" id="columnvalues" selectedindex="0"
                          type="collection">
                    <collection>
                        <propertylist id="1396440519721"/>
                    </collection>
                </property>
                <property expanded="Y" id="tests" selectedindex="0"
                          type="collection">
                    <collection>
                        <propertylist id="p1602059752707" sequence="1000000">
                            <property id="id" type="simple"><![CDATA[item1]]></property>
                            <property id="workitemid" type="simple"><![CDATA[SOURAVTESTER|1]]></property>
                        </propertylist>
                    </collection>
                </property>
                <property expanded="Y" id="specs" selectedindex="0"
                          type="collection">
                    <collection>
                        <propertylist id="p1602059825237" sequence="1000000">


                            <property id="id" type="simple"><![CDATA[item1]]></property>
                            <property id="specid" type="simple"><![CDATA[EMSpec|1]]></property>
                        </propertylist>
                    </collection>
                </property>
            </propertylist>
        </collection>
    </property>
    <property expanded="Y" id="workorder" type="propertylist">
        <propertylist id="root_0">
            <property expanded="Y" id="graceperiod" type="propertylist">
                <propertylist id="root_0_workorder_0">
                    <property expanded="Y" id="graceperiod" type="propertylist">
                        <propertylist id="root_0_workorder_0_graceperiod_0"/>
                    </property>
                    <property expanded="Y" id="deviation" type="propertylist">
                        <propertylist id="root_0_workorder_0_graceperiod_0"/>
                    </property>
                </propertylist>
            </property>
        </propertylist>
    </property>
</propertylist>')
, (NULL);
-- DDL and sample data population, end

--DECLARE @startPos INT = LEN('<?xml version="1.0" encoding="utf-8"?>') + 1;
DECLARE @prolog NVARCHAR(100) = '<?xml version="1.0" encoding="utf-8"?>';

;WITH rs AS
(
    SELECT ID
        --, TRY_CAST(SUBSTRING(col
        --  , @startPos
        --  , LEN(col)) AS XML) AS xmldata
        , TRY_CAST('<root>' + REPLACE(col, @prolog, '') + '</root>' AS XML) AS xmldata  FROM @tbl
)
SELECT ID
    , c.value('(./text())[1]', 'VARCHAR(100)') AS Item
FROM rs
    CROSS APPLY xmldata.nodes('//property[@id=("specid","workitemid")]') AS t(c);

+----+----------------+
| ID |      Item      |
+----+----------------+
|  1 | SOURAVTESTER|1 |
|  1 | EMSpec|1       |
+----+----------------+