On Wed, Jan 17, 2007 at 01:52:25PM +0100, Marcin St?pnicki wrote:
> I see this in postgresql logs:
>
> [6210] DEBUG: query: select * from "zew_patients"
> [6210] DEBUG: query: SELECT "A1"."p_nr_pesel" FROM "zew_patients"
> "A1" WHERE ("A1"."p_patient_id" = 19300)
>
> The point is, I don't why oh why the first select is issued (some cache?),
<speculation level="rank">
I bet it's getting the column list from the table or some such thing.
This is a lousy way to do it (the information_schema would be more
correct, although maybe no faster).
The reason it isn't repeated, I bet, is that your connection is
persistent, so the information gets cached.
</speculation>
A
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