在SQL Server 2008中使用OPENXML存储过程 – INSERT命令与XML文

我正在使用SQL Server 2008的 XML解析功能来迭代 XML文档并执行INSERT每个元素.

但是,我的存储过程似乎是按照与文档中的顺序不同的顺序将每个元素插入到表中.

此外,我尝试这次的次数越多,INSERT顺序似乎就会发生变化.

这是XML文档的一个示例 – 没有什么太花哨的了.

<ts>
    <t id="36a3c8c1-b958-42f0-82d1-dfa6bf9b99a1" encryptedAccountId="fQ/XF8lpeR9wEDUV3yMzvQ==" uploaded="2012-04-03T15:49:19.9615097Z" visible="1">
        <tv fieldId="301" officialValue="0,0" friendlyValue="0,0" />
        <tv fieldId="302" officialValue="0,1" friendlyValue="0,1" />
        <tv fieldId="303" officialValue="0,2" friendlyValue="0,2" />
        <tv fieldId="304" officialValue="0,3" friendlyValue="0,3" />
        <tv fieldId="305" officialValue="0,4" friendlyValue="0,4" />
        <tv fieldId="306" officialValue="0,5" friendlyValue="0,5" />
    </t>
    <t id="9d56d082-4b6a-4bdf-a7a2-f5c6af88344e" encryptedAccountId="fQ/XF8lpeR9wEDUV3yMzvQ==" uploaded="2012-04-03T15:49:19.9615097Z"  visible="1">
        <tv fieldId="301" officialValue="1,0" friendlyValue="1,0" />
        <tv fieldId="302" officialValue="1,1" friendlyValue="1,1" />
        <tv fieldId="303" officialValue="1,2" friendlyValue="1,2" />
        <tv fieldId="304" officialValue="1,3" friendlyValue="1,3" />
        <tv fieldId="305" officialValue="1,4" friendlyValue="1,4" />
        <tv fieldId="306" officialValue="1,5" friendlyValue="1,5" />
    </t>
    <t id="27db47a3-ad3f-4279-8f4f-0a8944ce32d4" encryptedAccountId="fQ/XF8lpeR9wEDUV3yMzvQ==" uploaded="2012-04-03T15:49:19.9615097Z" visible="1">
        <tv fieldId="301" officialValue="2,0" friendlyValue="2,0" />
        <tv fieldId="302" officialValue="2,1" friendlyValue="2,1" />
        <tv fieldId="303" officialValue="2,2" friendlyValue="2,2" />
        <tv fieldId="304" officialValue="2,3" friendlyValue="2,3" />
        <tv fieldId="305" officialValue="2,4" friendlyValue="2,4" />
        <tv fieldId="306" officialValue="2,5" friendlyValue="2,5" />
    </t>
    <t id="867ea26b-0341-4d60-ac48-f305492a60f0" encryptedAccountId="fQ/XF8lpeR9wEDUV3yMzvQ==" uploaded="2012-04-03T15:49:19.9615097Z" visible="1">
        <tv fieldId="301" officialValue="3,0" friendlyValue="3,0" />
        <tv fieldId="302" officialValue="3,1" friendlyValue="3,1" />
        <tv fieldId="303" officialValue="3,2" friendlyValue="3,2" />
        <tv fieldId="304" officialValue="3,3" friendlyValue="3,3" />
        <tv fieldId="305" officialValue="3,4" friendlyValue="3,4" />
        <tv fieldId="306" officialValue="3,5" friendlyValue="3,5" />
    </t>
</ts>

存储过程发生了一些操作,但我已经注释掉其他部分,只留下插入< t />的SQL.元素,然后< tv />元素.

存储过程中的SQL如下所示.

(@xmlTransaction是包含上述XML的NVARCHAR(MAX)输入参数)

BEGIN
    SET NOCOUNT ON;

    DECLARE @encryptedAccountID AS VARCHAR(200)

    BEGIN TRANSACTION
        BEGIN TRY
            DECLARE @Handle AS INT
            DECLARE @TransactionCount AS INT

            EXEC sp_xml_preparedocument @Handle OUTPUT,@xmlTransaction

            /* encryptedAccountId is always the same for each @xmlTransaction param */
            /* Just take the value from the first <t/> element */
            SET @encryptedAccountID = (SELECT eID FROM OPENXML (@Handle,'/ts/t[1]',2) WITH ( eID VARCHAR '@encryptedAccountId' ))

            /* Go through each <t/> element in the XML document and INSERT */
            INSERT INTO
            [Transactions] 
            (
                [ID],[EncryptedAccountID]
            )
            SELECT
                *
            FROM
                OPENXML (@Handle,'/ts/t',2)
            WITH
            (
                rID UNIQUEIDENTIFIER '@id',rEncryptedAccountID VARCHAR (200) '@encryptedAccountId'
            )

            /* Loop through each TransactionValue in the XML document and INSERT */
            INSERT INTO
            [TransactionValues]
            (
                FieldID,TransactionID,OfficialValue,FriendlyValue
            )
            SELECT
                *
            FROM
                OPENXML (@Handle,'/ts/t/tv',2)
            WITH
            (
                rFieldID INT '@fieldId',rTransactionID UNIQUEIDENTIFIER '../@id',rOfficialValue NVARCHAR (500) '@officialValue',rFriendlyValue NVARCHAR (500) '@friendlyValue'
            )

            /* Dispose of the XML document */
            EXEC sp_xml_removedocument @Handle

        COMMIT TRANSACTION
    END TRY
    BEGIN CATCH

        RETURN @@ERROR

        ROLLBACK TRANSACTION        
    END CATCH

END

应该相当简单.然而,如果我查询结果,它们与XML文档的顺序不同. < tv />的第二个INSERT语句元素确实以正确的顺序将元素存储到第二个表中,但< t />元素不以正确的顺序存储在其表中.

（编辑：源码网）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!