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Missing information on Expressional Indexes

From: David Fetter <david(at)fetter(dot)org>
To: PostgreSQL Docs <pgsql-docs(at)postgresql(dot)org>
Subject: Missing information on Expressional Indexes
Date: 2010-03-17 00:14:01
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Lists: pgsql-docs

I think this page should mention that the expressions used in an
expressional index need to be equivalent to an IMMUTABLE function, and
the docs don't say so.  The change should also be back-patched.

I'm thinking that something along the lines of, "Expressions are
limited to those which are equivalent to an [link]IMMUTABLE[/link]

Anybody have a better suggestion for wording?

David Fetter <david(at)fetter(dot)org>
Phone: +1 415 235 3778  AIM: dfetter666  Yahoo!: dfetter
Skype: davidfetter      XMPP: david(dot)fetter(at)gmail(dot)com
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