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sql - 在 SQL Server 2017 中粉碎 XML

问题描述

给定以下 SQL：

drop table if exists #testXML

create table #testXML (InputXML xml)

insert into #testXML
values ('<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<document>
<table name="tableName1">
<column name="ID">000010313500011171011710001 </column>
<column name="StartDate">10/27/2019</column>
<column name="EndDate">11/02/2019</column>
</table>
</document>')

我试图得到这样的输出：

ID                                 StartDate     EndDate
000010313500011171011710001        10/27/2019    11/02/2019

这是我的开始，但我只是在这一点上挣扎。 

SELECT  
       px1.tbl.value('@name','nvarchar(50)') as TableName
      ,px2.col.value('@name','nvarchar(50)') as ColName
from #testXML px
cross apply   inputxml.nodes ('/document/table') as px1(tbl)
cross apply   inputxml.nodes ('/document/table/column') as px2(col)

这是在 SQL Server 2017 上。

标签： sqlsql-serverxmlsql-server-2017

解决方案

@name您的 SQL 需要通过利用属性值进行如下调整。

SQL

-- DDL and sample data population, start
DECLARE @tbl TABLE (InputXML xml)

INSERT INTO @tbl (InputXML)
VALUES ('<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<document>
    <table name="tableName1">
        <column name="ID">000010313500011171011710001</column>
        <column name="StartDate">10/27/2019</column>
        <column name="EndDate">11/02/2019</column>
    </table>
</document>');
-- DDL and sample data population, end

SELECT col.value('(column[@name="ID"]/text())[1]','nvarchar(50)') as ID
    , col.value('(column[@name="StartDate"]/text())[1]','DATE') as StartDate
    , col.value('(column[@name="EndDate"]/text())[1]','DATE') as EndDate
FROM @tbl tbl
    CROSS APPLY tbl.InputXML.nodes('/document/table') AS tab(col);

输出

+-----------------------------+------------+------------+
|             ID              | StartDate  |  EndDate   |
+-----------------------------+------------+------------+
| 000010313500011171011710001 | 2019-10-27 | 2019-11-02 |
+-----------------------------+------------+------------+

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