From: | Federico Di Gregorio <federico(dot)digregorio(at)dndg(dot)it> |
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To: | psycopg(at)postgresql(dot)org |
Subject: | Re: Is there anything I should watch out for when creating temporary tables with psycopg2? |
Date: | 2011-08-17 09:57:46 |
Message-ID: | 4E4B909A.2020407@dndg.it |
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Lists: | psycopg |
On 12/08/11 19:59, W. Matthew Wilson wrote:
> I'm breaking one gigantic query into several temporary tables and,
> then I'll join those and then do a select.
>
> Is there anything I should watch out for?
>
> Also, what are some other good methods to reduce gigantic queries into
> manageable amounts?
It depends on what you want. Speed? To easily manage query SQL? Here we
don't use temporary table but table-returning SQL procedures (not
plpgsql, just plain sql) and then do something like:
SELECT * FROM procedure1(customer_id, date) A, procedure2(...) B
WHERE A.id = B.id ...
and so on.
federico
--
Federico Di Gregorio federico(dot)digregorio(at)dndg(dot)it
Studio Associato Di Nunzio e Di Gregorio http://dndg.it
The number of the beast: vi vi vi. -- Delexa Jones
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