| From: | Patricio Muñoz <patricio(dot)munoz(at)cmet(dot)net> |
|---|---|
| To: | Carolina Hurtado Londoño <carohurtado(at)yahoo(dot)com> |
| Cc: | pgsql-es-ayuda-owner(at)postgresql(dot)org, pgsql-bugs(at)postgreslq(dot)org, pgsql-es-ayuda(at)postgresql(dot)org |
| Subject: | Re: postgresql |
| Date: | 2005-04-25 17:06:08 |
| Message-ID: | 426D2380.8020808@cmet.net |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-es-ayuda |
Carolina Hurtado Londoño escribió:
> Hi:
> I'm working on a project where I need to know how Postgresql determines
> which "Access Plan" to use when executing specific Select-SQL sentences;
> whether Postgresql decides to use a specific Index or not and how
> Postgresql determines if the index has to be used; and how Postgresql
> parsers a Select-SQL sentence depending on the order of the WHERE clauses.
> Where can I find specific information about this?.
> Thank you very much for your help.
> Carolina Hurtado Londoño
Hello,
The official documents explains:
http://www.postgresql.org/docs/8.0/static/sql-createindex.html
regards :-)
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