Re: Forcing query to use an index

Micheal,

Don't forget to run ANALYZE as well; this does not require a table lock.

> Does using "set enable_seqscan = off" impact anything else on the
> system, or is it connection-specific? Is this the recommended way of
> doing this, or is there another way of coercing Postgres into using
> indexes? I'm making these queries from Perl code running in an XSP
> page, so I'm not sure how flexible this option would be from a
> developer point of view.

Setting enable_seqscan=off is just for testing purposes, to see if the planner
is making a wrong decision so that you can adjust your .conf params, query,
and/or indexes to suit. The setting is *not* intended as a production
solution.

--
-Josh Berkus
Aglio Database Solutions
San Francisco