无法在 SQL Server 存储过程中使用 FOR XML PATH 生成正确的 XML 格式答案

【问题标题】：Cannot produce correct XML format using FOR XML PATH in SQL Server Stored Procedure无法在 SQL Server 存储过程中使用 FOR XML PATH 生成正确的 XML 格式
【发布时间】：2014-06-09 14:15:29
【问题描述】：

我是 XML 新手，我正在努力理解如何编写 SQL Server 存储过程以从下表生成 XML 文件。

Contract,ContractSection,ClaimReference,TransactionReference,ClaimReference,Ccy,PTT_Ind,PTT_Fees**
P000013-140, P000013-140_001, C000011-14, CLP00000036, C000011-14, GBP, 50, 100
P000066-888, P000066-888_001,   C000031-28, CLP00000041, C000011-14, GBP, 75, 200

我尝试使用FOR XML PATH 生成所需的格式，但未成功，如下所示：

<ReportingContractEntry>
    <Contract>
        <ReinsRef>P000013-140 </ReinsRef>
    <Contract>
    <ReportingSectionEntry>
        <SectionRef>P000013-140_001 </ SectionRef >
    </ReportingSectionEntry>
    <ReportingTransactionEntry>
<ReportingTransactionAmountEntry>
    <EntryReference>CLP00000036</EntryReference>
        <TechAccountAmtItem Type="ptt_ind">
            <Amt Share="reinsurer_share" Ccy="GBP">20.00</Amt>
    </TechAccountAmtItem>
        <TechAccountAmtItem Type="ptt_fees">
            <Amt Share="reinsurer_share" Ccy="GBP">590.00</Amt>
    </TechAccountAmtItem>
</ReportingTransactionAmountEntry>
</ReportingTransactionEntry>
</ReportingContractEntry>
<ReportingContractEntry>
    <Contract>
        <ReinsRef>P000066-888 </ReinsRef>
    <Contract>
    <ReportingSectionEntry>
        <SectionRef>P000013-140_001 </ SectionRef >
    </ReportingSectionEntry>
    <ReportingTransactionEntry>
<ReportingTransactionAmountEntry>
    <EntryReference>CLP00000041</EntryReference>
        <TechAccountAmtItem Type=" ptt_ind ">
            <Amt Share="reinsurer_share" Ccy="GBP">75.00</Amt>
    </TechAccountAmtItem>
        <TechAccountAmtItem Type="ptt_fees">
            <Amt Share="reinsurer_share" Ccy="GBP">200.00</Amt>
    </TechAccountAmtItem>
</ReportingTransactionAmountEntry>
</ReportingTransactionEntry>
</ReportingContractEntry>

到目前为止，我的最大努力是这样，但这仅适用于每个 ReportingTransactionEntry 的单个 TechAccountAmtItem。而且我需要添加多个TechAccountAmtItems

SELECT  
   RTRIM(policyRef) AS 'Contract/ReinsRef',
   RTRIM(policyRef) + '_001' AS 'ReportingSectionEntry/SectionRef',
   RTRIM(TransactionReference) AS 'ReportingTransactionEntry/ReportingTransactionAmountEntry/EntryReference' ,
   'ptt_ind' AS 'ReportingTransactionEntry/ReportingTransactionAmountEntry/TechAccountAmtItem/@Type',
   'reinsurer_share' AS 'ReportingTransactionEntry/ReportingTransactionAmountEntry/TechAccountAmtItem/Amt/@Share'  ,
   CASE WHEN currency_id = 26 THEN 'GBP' ELSE 'EUR' END AS 'ReportingTransactionEntry/ReportingTransactionAmountEntry/TechAccountAmtItem/Amt/@Ccy'  ,
   SUM(Paid_This_Time_Indemnity) AS 'ReportingTransactionEntry/ReportingTransactionAmountEntry/TechAccountAmtItem/Amt'
   --,SUM(Paid_This_Time_Fees) -- I can't figure out how to get a second <TechAmountItem> within the same <ReportingTransactionAmountEntry> ???????
FROM 
    #tmpClm2
GROUP BY
    policyRef, ClaimReference, TransactionReference, ClaimReference, currency_id
FOR XML PATH ('ReportingContractEntry')

正如我所说，XML 对我来说是全新的，因此非常感谢任何建议。

我什至不确定使用 FOR XML PATH 是否是解决此问题的正确方法。

这似乎是最简单、最灵活的选择。

【问题讨论】：

您的架构中有两列名为“ClaimReference”。我不明白这是怎么回事。
另外，您引用了policyRef，但此列未显示在您的架构中。清理它以减少混乱可能是个好主意。

标签： sql-server xml

【解决方案1】：

您示例中的架构与您的查询不对应，但问题很简单。在您的查询中，您可以使用希望返回多个元素的子查询。

代替：

   'ptt_ind' AS 'ReportingTransactionEntry/ReportingTransactionAmountEntry/TechAccountAmtItem/@Type',
    'reinsurer_share' AS 'ReportingTransactionEntry/ReportingTransactionAmountEntry/TechAccountAmtItem/Amt/@Share'  ,
    CASE WHEN currency_id = 26 THEN 'GBP' ELSE 'EUR' END AS 'ReportingTransactionEntry/ReportingTransactionAmountEntry/TechAccountAmtItem/Amt/@Ccy'  ,
    SUM(Paid_This_Time_Indemnity) AS 'ReportingTransactionEntry/ReportingTransactionAmountEntry/TechAccountAmtItem/Amt'

试试：

(
    SELECT * FROM
    (
        SELECT
        'ptt_ind' AS 'TechAccountAmtItem/@Type',
        'reinsurer_share' AS 'TechAccountAmtItem/Amt/@Share'  ,
        CASE WHEN currency_id = 26 THEN 'GBP' ELSE 'EUR' END AS 'TechAccountAmtItem/Amt/@Ccy'  ,
        SUM(Paid_This_Time_Indemnity) AS 'TechAccountAmtItem/Amt'
        UNION
        SELECT
        'ptt_fees' AS 'TechAccountAmtItem/@Type',
        'reinsurer_share' AS 'TechAccountAmtItem/Amt/@Share'  ,
        CASE WHEN currency_id = 26 THEN 'GBP' ELSE 'EUR' END AS 'TechAccountAmtItem/Amt/@Ccy'  ,
        SUM(Paid_This_Time_Fees) AS 'TechAccountAmtItem/Amt'
    ) iq FOR XML PATH(''), TYPE
) AS 'ReportingTransactionEntry/ReportingTransactionAmountEntry'

【讨论】：

感谢您查看我格式错误的示例并发现问题。子查询修复了它。非常感谢