Subject: Re: [xsl] a sorting conundrum From: Dimitre Novatchev <dnovatchev@xxxxxxxxx> Date: Fri, 4 Mar 2005 07:04:17 +1100 |
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
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