Re: Postgres 9.0 has a bias against indexes

From: Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>
To: Mladen Gogala <mladen(dot)gogala(at)vmsinfo(dot)com>
Cc: Igor Neyman <ineyman(at)perceptron(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, David Wilson <david(dot)t(dot)wilson(at)gmail(dot)com>, Kenneth Marshall <ktm(at)rice(dot)edu>, "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Postgres 9.0 has a bias against indexes
Date: 2011-01-27 20:37:22
Message-ID: AANLkTinZTugcnu+6QUnH2Dh2Lu-WGRjd_rnYyG4YSwH9@mail.gmail.com
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On Thu, Jan 27, 2011 at 1:31 PM, Mladen Gogala
<mladen(dot)gogala(at)vmsinfo(dot)com> wrote:
> There is INDEX UNIQUE SCAN PK_EMP.  Oracle will use an index.

That's because Oracle has covering indexes.

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