Question

I have an xml string and need to manipulate it within sql.

<RuleData ReturnVariable="">
  <MateProperties>
    <Property Key="value" DisplayName="name value" />
    <Property Key="value2" DisplayName="name value2" />
  </MateProperties>
  <ReferenceNames>
    <Item Name="0" Value="=CouplerType + &quot;-1&quot;" />
    <Item Name="1" Value="Driveshaft-1" />
  </ReferenceNames>
  <ReferenceFeatures>
    *<Item Name="=CouplerType + &quot;-1&quot;" Value="CSYS_BOREB" />
    <Item Name="Driveshaft-1" Value="CSYS_CouplerINSIDE" />*
  </ReferenceFeatures>
</RuleData>

These two lines I need to convert them.

<Item Name="=CouplerType + &quot;-1&quot;" Value="CSYS_BOREB" />
<Item Name="Driveshaft-1" Value="CSYS_CouplerINSIDE" />

To This new format.

<Value>
  <Column Value="=CouplerType + &quot;" />
  <Column Value="CSYS_BOREB" />
</Value>
<Value>
  <Column Value="Driveshaft-1" />
  <Column Value="CSYS_CouplerINSIDE" />
</Value>

Essentially each line has to be split in two and re-named. I Can take care of the re-naming i just am having trouble splitting the columns. I have to do exactly the same thing in the ReferenceNames Section as well. That one is easier as Its always “0” and “1” so i can simply convert the xml to string and find replace with that. The ReferenceFeatures section though is more complicated because anything can be in the name section.

Answer 1

declare @xml xml =
    N'<RuleData>
        <ReferenceFeatures>
            <Item Name="=CouplerType + &quot;-1&quot;" Value="CSYS_BOREB" />
            <Item Name="Driveshaft-1" Value="CSYS_CouplerINSIDE" />
        </ReferenceFeatures>
    </RuleData>'

;with items as
(
    select
        row_number() over (order by (select 1)) as RowNumber
        ,t.n.value('@Name', 'nvarchar(255)') as Name
        ,t.n.value('@Value', 'nvarchar(255)') as Value
    from @xml.nodes('//RuleData/ReferenceFeatures/Item') as t(n)
)
select
    (select it.Name as [@Value] for xml path ('Column'), type),
    (select it.Value as [@Value] for xml path ('Column'), type)
from items it
order by it.RowNumber
for xml raw ('Value'), type