Re: a sorting conundrum

On 03 Mar 2005 19:54:28 +0000, Colin Paul Adams
<colin@xxxxxxxxxxxxxxxxxx> wrote:
> >>>>> "Dimitre" == Dimitre Novatchev <dnovatchev@xxxxxxxxx> writes:
> 
>    Dimitre> If we want to have a more efficient variant of the above,
>    Dimitre> which avoids the translate(), (and we assume an
>    Dimitre> intelligent optimizer),
> 
>    Dimitre> then the following should be much more efficient:
> 
>    Dimitre> substring(., string-length(substring-before(.,' ')) +
>    Dimitre> (string-length(substring-before(.,' ')) > 0) )
> 
> You can remove that assumption of an intelligent optimizer, by placing
> the common sub-expression into a variable.

Not in this case -- it is not possible to have an xsl:variable as a
preceding-sibling of an xsl:sort.

Sorry.


Cheers,
Dimitre