Construct XQuery element attributes

Question

I have this XQuery element that is giving me an error:

let $mx := 7
for $b in doc("abc.xml")//test
   where $b/@attr = $mx
return 
<mytag myattr="$mx">

{$b/data(@name)}

</mytag>    

I want to return the value of $mx as the myattr attribute. Any pointers?

Answer 1

Use AVTs (Attribute Value Templates) for this:

<mytag myattr="{$mx}">