Ashley Sheridan wrote:
On Mon, 2008-12-08 at 23:23 +0000, ceo@xxxxxxxxx wrote:
Presumable, the EXISTS sub-query can be optimized sometimes to just stop processing the sub-query and kick things back out to the outer query.
IN has to process them all and find them all.
Don't forget the special case use as well:
IF NOT EXISTS `universe` THEN bigbang()
Ash
www.ashleysheridan.co.uk
any chance of writing the implementation of that bigbang() function?
give you a pound!
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