TSQL在xml数据类型上的位置

Question

如何在Sql Server 2005中对xml数据类型执行where子句命令？

Xml结构

<User UserId="1" UserName="x">
<User UserId="2" UserName="y">

查询

SELECT XmlColumn from Table where XmlColumn.query('/User[@UserId'+ @dynamicValue +']')

预期输出

获取属性UserId =输入变量

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Answer 1

declare @T table
(
  XMLColumn xml
)

insert into @T values ('<User UserId="1" UserName="x"/>')
insert into @T values ('<User UserId="2" UserName="y"/>')

declare @UserID int
set @UserID = 1

select XMLColumn
from @T
where XMLColumn.exist('/User[@UserId = sql:variable("@UserID")]') = 1

结果：

XMLColumn
---------------------------------
<User UserId="1" UserName="x" />