XQuery - Variables in function definition

Question

Is it possible to declare a variable to be used only inside of function declaration? If so - how to do it?

Answer 1

Variable declaration can only be placed in the prolog of a query, but you can wrap your function code with a FLWOR expression, consisting of a single LET and RETURN clause. An example:

declare function local:func() {
   let $var := ...your variable...
   return
      ...your actual code...
};

Hope this helps, Christian