[Wolves] mysql select help
Mark Rogers
mark at quarella.co.uk
Tue Mar 13 11:24:16 UTC 2012
On 13/03/12 01:52, Chris Ellis wrote:
> You can also use an aggregate function in your subquery rather than a order
> and limit, this should be more efficient: SELECT * FROM phonelist WHERE
> trydate = ( SELECT MIN( trydate ) FROM phonelist WHERE trydate > DATE(NOW()) )
Good point; it may well be that MySQL will optimise the query to achieve the
same results but using MIN makes more sense than order and limit. Also, making
sure that trydate is indexed will make a huge difference.
--
Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450
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