请教一段sp_xml_preparedocument

[ufo20020427]

USE [Takewin.GMCC.RMC]
GO

DECLARE	@ListEngineParamId nvarchar(max)

set @ListEngineParamId = N'<?xml version="1.0" encoding="utf-16"?>
<ArrayOfString xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <string>0501</string>
  <string>0502</string>
  <string>0503</string>
</ArrayOfString>'


declare @hdoc int
exec sp_xml_preparedocument @hdoc output, @ListEngineParamId	

Select string
From openxml(@hdoc,'/ArrayOfString',2) 
with (string char(4))


exec sp_xml_removedocument @hdoc

请问上例xml，即只有两级的情况下，如何检索出三行数据
我这里只能检索出第一列
备注：不能改变xml结构
谢谢！

[Shawn]

DECLARE	@ListEngineParamId nvarchar(max)

set @ListEngineParamId = N'<?xml version="1.0" encoding="utf-16"?>
<ArrayOfString xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <string>0501</string>
  <string>0502</string>
  <string>0503</string>
</ArrayOfString>'


declare @hdoc int
exec sp_xml_preparedocument @hdoc output, @ListEngineParamId	

Select string
From openxml(@hdoc,'/ArrayOfString/string',2) 
WITH (string CHAR(4) '.')

exec sp_xml_removedocument @hdoc

/*
string
0501
0502
0503
*/

[唐诗三百首]

declare @ListEngineParamId nvarchar(max)
 
set @ListEngineParamId=N'<?xml version="1.0" encoding="utf-16"?>
<ArrayOfString xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <string>0501</string>
  <string>0502</string>
  <string>0503</string>
</ArrayOfString>'

select o.value('.','char(4)') 'str'
from (select cast(@ListEngineParamId as xml) 'x') t
cross apply x.nodes('/ArrayOfString/string') x(o)

/*
str
----
0501
0502
0503

(3 row(s) affected)
*/