Re: [HACKERS] Surjective functional indexes

From: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>
To: Konstantin Knizhnik <k(dot)knizhnik(at)postgrespro(dot)ru>
Cc: Stephen Frost <sfrost(at)snowman(dot)net>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Christoph Berg <myon(at)debian(dot)org>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [HACKERS] Surjective functional indexes
Date: 2018-03-22 20:37:43
Message-ID: 20180322203743.reucnyd7pelkkxom@alvherre.pgsql
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The rd_projidx (list of each nth element in the index list that is a
projection index) thing looks odd. Wouldn't it make more sense to have
a list of index OIDs that are projection indexes?

--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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