Umm... I know MySQL doesn't do subselects. In the selection I posted, there aren't any subselections. The module of which I was speaking was so you could actually use SQL-92 style subselections but have them translated into multiple queries which, yes, do create temporary tables. For this particular query, however, there is no need to create a second table.
Updated: Seemed a bit harsh. Just having a bad day :-/
antirice
The first rule of Perl club is - use Perl
The ith rule of Perl club is - follow rule i - 1 for i > 1
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