Re: Evaluation of secondary sort key.

From: Jesper Krogh <jesper(at)krogh(dot)cc>
To: David Fetter <david(at)fetter(dot)org>
Cc: "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Evaluation of secondary sort key.
Date: 2011-04-09 16:23:25
Message-ID: AA5A90D6-DB18-45EB-AF60-5150C3D9D3DA@krogh.cc
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>
> How would PostgreSQL know that sorting by id leaves no ambiguity for
> the next key to address?

It wouldn't But it could postpone evaluation until ambiguity was actually met.

Jesper
>

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