Re: Selectivity of "=" (Re: [HACKERS] Index not used on simple select)

From: Thomas Lockhart <lockhart(at)alumni(dot)caltech(dot)edu>
To: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
Cc: Hannu Krosing <hannu(at)trust(dot)ee>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Ole Gjerde <gjerde(at)icebox(dot)org>, pgsql-hackers(at)postgreSQL(dot)org
Subject: Re: Selectivity of "=" (Re: [HACKERS] Index not used on simple select)
Date: 1999-07-28 04:19:21
Message-ID: 379E84C9.504DAB63@alumni.caltech.edu
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> Yes, I think we index nulls. What are partial indexes?

http://www.PostgreSQL.ORG/docs/postgres/partial-index.htm

Postgres had support for this at one time, and probably still does.

- Thomas

--
Thomas Lockhart lockhart(at)alumni(dot)caltech(dot)edu
South Pasadena, California

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