Re: The query cache - first snapshot (long)

> * PREPARE/EXECUTE
>
> - For tests I use query that not use some table (the executor is
> in boredom state), but is difficult for the parser. An example:
>
> SELECT 'a text ' || (10*10+(100^2))::text || ' next text ' || cast
> (date_part('year', timestamp 'now') AS text );
>
> - (10000 * this query):
>
> standard select: 54 sec
> via prepare/execute: 4 sec (93% better)
>
> IMHO it is nod bad.
>
> - For standard query like:
>
> SELECT u.usename, r.relname FROM pg_class r, pg_user u WHERE
> r.relowner = u.usesysid;
>
> it is with PREPARE/EXECUTE 10-20% faster.
>
>
> I will *very glad* if someone try and test patch; some discussion is wanted
> too.

Wow, just when I thought we couldnd't get much faster. That is great.

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Bruce Momjian | http://candle.pha.pa.us
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