Question

我有表：TestXml有2列（pk，xCol）。这是我的表：

    create table TestXml (
pk int primary key, xCol xml)
on [Primary]
insert into Store.dbo.TestXml(pk,xCol) values (1,'<docs><doc id="12"><section> Section 1</section></doc>
<doc id="123"><section> Section 1</section>
<section> Section 2</section>
</doc>
</docs>'
)

我插入的xml值如下所示：

   <docs>
  <doc id="12">
    <section> Section 1</section>
  </doc>
  <doc id="123">
    <section> Section 1</section>
    <section> Section 2</section>
  </doc>
</docs>

如何将“<section>”元素置于“<doc id = "123">”？

Answer 1

试试这个：

SELECT c.d.value('(.)[1]', 'varchar (100)') AS Section
FROM Store.dbo.TestXml tx
    CROSS APPLY tx.xCol.nodes('./docs/doc') AS a(b)
    CROSS APPLY a.b.nodes('./section') AS c(d)
WHERE a.b.value('(@id)[1]', 'int') = 123

如何通过T-SQL从xml中选择数据？

1 个答案: