| From: | Neil Conway <neilc(at)samurai(dot)com> |
|---|---|
| To: | Reece Hart <reece(at)in-machina(dot)com> |
| Cc: | "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: explicit casting required for index use |
| Date: | 2003-10-27 09:18:53 |
| Message-ID: | 1067246333.457.12.camel@tokyo |
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| Thread: | |
| Lists: | pgsql-general pgsql-performance |
On Sat, 2003-10-25 at 13:49, Reece Hart wrote:
> Having to explicitly cast criterion is very non-intuitive. Moreover,
> it seems quite straightforward that PostgreSQL might incorporate casts
This is a well-known issue with the query optimizer -- search the
mailing list archives for lots more information. The executive summary
is that this is NOT a trivial issue to fix, and it hasn't been fixed in
7.4, but there is some speculation on how to fix it at some point in the
future.
-Neil
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