Question

I want to delete some nodes from menu xml that is being stored in a typed xml column in database.
Snippet from menu xml –

<menu xmlns="http://xxx" ..>
<menuItem name="Menu1">
    <menuItem name="SubMenu1">
        <role>role1</role>
        <url target="webPage1.aspx" />
    </menuItem> 
</menuItem> 

I am trying to delete <role> under menuItem = "SubMenu1" using following XML DML –

UPDATE [dbo].[MenuTest]
SET xmlMenu.modify('
    declare namespace ns="http://xxx";
    delete(/ns:menu/ns:menuItem[@name="Menu1"]/ns:menuItem[@name="SubMenu1"]/ns:role[1])
')

But getting this error:

Msg 6965, Level 16, State 1, Line 1
XML Validation: Invalid content. Expected element(s):http://xxx:role where element ‘http://xxx:url’ was specified.

Can please guide what I am missing here.

Thank you!

Answer 1

It looks like your XML column is hooked up to a XML-schema that requires a <role> node before the <url> node.

What you have posted here works just fine.

declare @T table 
(
  xmlMenu xml
)

insert into @T values
('<menu xmlns="http://xxx">
     <menuItem name="Menu1">
       <menuItem name="SubMenu1">
         <role>role1</role>
         <url target="webPage1.aspx" />
       </menuItem> 
    </menuItem>
  </menu>')


UPDATE @T
SET xmlMenu.modify('
    declare namespace ns="http://xxx";
    delete(/ns:menu/ns:menuItem[@name="Menu1"]/ns:menuItem[@name="SubMenu1"]/ns:role[1])
')

Result

<menu xmlns="http://xxx">
  <menuItem name="Menu1">
    <menuItem name="SubMenu1">
      <url target="webPage1.aspx" />
    </menuItem>
  </menuItem>
</menu>