To: Simon Riggs <simon@2ndquadrant.com>
Cc: Karim Nassar <karim.nassar@NAU.EDU>,
	Christopher Kings-Lynne <chriskl@familyhealth.com.au>,
	pgsql-performance@postgresql.org
Subject: Re: Delete query takes exorbitant amount of time 
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Comments: In-reply-to Simon Riggs <simon@2ndquadrant.com>
	message dated "Fri, 25 Mar 2005 15:10:48 +0000"
Date: Fri, 25 Mar 2005 10:17:17 -0500
Message-ID: <23515.1111763837@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>

Simon Riggs <simon@2ndquadrant.com> writes:
> I vote to make this an ERROR in 8.1 - I see little benefit in allowing
> this situation to continue.

Other than spec compliance, you mean?  SQL99 says

            ... The declared type of each referencing column shall be
            comparable to the declared type of the corresponding referenced
            column.

It doesn't say that it has to be indexable, and most definitely not that
there has to be an index.

			regards, tom lane