Re: When are index scans used over seq scans? - Mailing list pgsql-performance

From Richard van den Berg
Subject Re: When are index scans used over seq scans?
Date
Msg-id 4268BE11.6070200@trust-factory.com
Whole thread Raw
In response to Re: When are index scans used over seq scans?  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-performance
Tom Lane wrote:
> Are the tables in question particularly wide (many columns)?

Yes they are. They both have 20 columns. If I cut down the duration
table to just 1 column of timestamps, the planner uses the index.

Interesting, so I could store just the timestamps in another table (view
doesn't help) to speed up this query.

I am using the debian package. How can I tell if profiling is enabled?

Thanks a lot,

--
Richard van den Berg, CISSP
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