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Re: optimising UNION performance

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Am Montag, 28. August 2006 10:23 schrieb Rafal Pietrak:
> Is there a way to speed up the query to my 'grand total' logfile,
> constructed as a UNION of smaller (specialised) logfiles?

If it is sufficient for your purpose, you will find UNION ALL to be 
significantly faster.

-- 
Peter Eisentraut
http://developer.postgresql.org/~petere/


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