| From: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
|---|---|
| To: | "Pollard, Mike" <mpollard(at)cincom(dot)com> |
| Cc: | Csaba Nagy <nagy(at)ecircle-ag(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Greg Stark <gsstark(at)mit(dot)edu>, "Jonah H(dot) Harris" <jonah(dot)harris(at)gmail(dot)com>, Neil Conway <neilc(at)samurai(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: generalizing the planner knobs |
| Date: | 2005-12-05 08:37:24 |
| Message-ID: | 1133771844.2906.865.camel@localhost.localdomain |
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| Lists: | pgsql-hackers |
On Sun, 2005-12-04 at 13:47 -0500, Pollard, Mike wrote:
> Simon Riggs wrote
> > The system default is to have a prepared statement
> > bound to a plan on its first parameter bind.
>
> We call it deferred optimization.
>
> Do you really stop at the first parameter?
The first bind of parameters to the query, yes.
> You
> can do the same thing with correlated subqueries
Not currently done, AFAIK.
Best Regards, Simon Riggs
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