Question

我有一个带有XML列的SQL表。该列的值如下所示：

 <StudentGroup xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <StudentIds>
    <int>3000</int>
    <int>3001</int>
    <int>3002</int>
    <int>8</int>
    <int>9</int>
  </StudentIds>
</StudentGroup>

我希望将每个StudentID放在一行而不是一行中。这就是我所做的：

select
    xmlColumn.value('(/StudentGroup/StudentIds)[1]','varchar(max)') as IDs  
from myTable

此select语句返回一行中的ID。像这样：

30003001300289

想要的是

请帮忙！提前谢谢。

Answer 1

当您在变量中包含XML时：

DECLARE @x XML = '
<StudentGroup xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <StudentIds>
    <int>3000</int>
    <int>3001</int>
    <int>3002</int>
    <int>8</int>
    <int>9</int>
  </StudentIds>
</StudentGroup>';

SELECT
    n.v.value('.','INT') AS ID
FROM
    @x.nodes('/StudentGroup/StudentIds/int') AS n(v);

当您在表中使用XML时：

DECLARE @x XML = '
<StudentGroup xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <StudentIds>
    <int>3000</int>
    <int>3001</int>
    <int>3002</int>
    <int>8</int>
    <int>9</int>
  </StudentIds>
</StudentGroup>';

DECLARE @t TABLE(
    x XML
);
INSERT INTO @t(x)VALUES(@x);

SELECT
    n.v.value('.','INT') AS ID
FROM
    @t
    CROSS APPLY x.nodes('/StudentGroup/StudentIds/int') AS n(v);

在SQL中将XML节点值分隔为单独的行

1 个答案: