"Dimitre" == Dimitre Novatchev <dnovatchev(_at_)gmail(_dot_)com> 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.
--
Colin Paul Adams
Preston Lancashire
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