SQL 中 sp_xml_preparedocument,openxml的使用

目的通过解析 XML 获取
QuestionID,QuestionTypeID,OptionText
SP:
create proc dbo.TestSaveSurvey
(
@XML ntext
)
as
begin
   declare @doc int
   declare @nError int
    set @nError=50001
    --sp_xml_preparedocument要读取的XML文档时@XML,
   exec sp_xml_preparedocument @doc output,@xml
   --通过OpenXML获取行集视图,
   --/UIResponse/SurveyDetails/s/p/q/o 表示我要出来的节点
    select * into #NullOptionTemp from openxml(@doc,'/UIResponse/SurveyDetails/s/p/q/o',1)
              /*
              QuestionID 列名称
              int 数据类型
              ../@QuestionId:Xpath，将那些节点映射到列
              */
              with
              (
               QuestionId int '../@QuestionId',
               QuestionTypeId int '../@QuestionTypeId',
               OptionText nvarchar(100) '@OptionText'
              ) 
              where OptionText is null and QuestionTypeid in(2,3,4,5,6,10)
              if exists(select * from #NullOptionTemp)
              begin
                  set @nError=50003
                  goto error
              end
              delete from #NullOptionTemp
     error:
          exec sp_xml_removedocument @doc
        return @nError
end

Exec TestSaveSurvey '''text/xsl'' href=''styles/GenericPage.xslt''?>

''t like it!" NonSelect="0" OptionValue="1" VariableName="" PipingVariableName="" Fixed="0" Exclusive="0" />

'