Re: Performance problem on RH7.1 - Mailing list pgsql-general

From Tom Lane
Subject Re: Performance problem on RH7.1
Date
Msg-id 29248.1088446222@sss.pgh.pa.us
Whole thread Raw
In response to Re: Performance problem on RH7.1  (Együd Csaba <csegyud@vnet.hu>)
Responses Re: Performance problem on RH7.1  (Együd Csaba <csegyud@vnet.hu>)
List pgsql-general
=?iso-8859-2?Q?Egy=FCd_Csaba?= <csegyud@vnet.hu> writes:
>> I'd also suggest dropping the EXECUTE approach, as this is costing you
>> a re-plan on every call without buying much of anything.

> Do you mean I should use PERFORM instead? Or what else?
> Do you mean the "for R in execute" statements? How can I run a dynamic query
> in other way?

No, I mean the most straightforward way:

   for R in select ... where stockid = $1 and ...

This lets plpgsql cache the plan for the SELECT.

            regards, tom lane

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