[xquery-talk] Add value to result before a for loop

David Carlisle davidc at nag.co.uk
Wed Jul 18 06:52:17 PDT 2012


On 18/07/2012 14:04, David Carlisle wrote:
>
>
> for is just an expression

true

  so you could for example use

false sorry, you can't use concat here, the verions below using 
string-join  are OK though.
> concat($hdr,for $i in ......)
>
> of course in this simple example you don't need the variable at all as
> $hdr is already just a call to concat you could return the single
> expression
>
> concat('Id', codepoints-to-string(9), 'Name',
>   codepoints-to-string(10),
> for $i in$doc/item return
> concat($i/id, codepoints-to-string(9), $i/name, codepoints-to-string(10)
> )
>
> or more simply
>
> string-join(
> ('Id	Name',$doc/item/concat(id,'	',name)),'
')
>
> the let and for clauses aren't really needed,
>
> David
>
>
>
>


-- 
google plus: https:/profiles.google.com/d.p.carlisle

________________________________________________________________________
The Numerical Algorithms Group Ltd is a company registered in England
and Wales with company number 1249803. The registered office is:
Wilkinson House, Jordan Hill Road, Oxford OX2 8DR, United Kingdom.

This e-mail has been scanned for all viruses by Star. The service is
powered by MessageLabs. 
________________________________________________________________________


More information about the talk mailing list