From: Tom Lane <tgl@sss.pgh.pa.us>
To: Christopher Kings-Lynne <chriskl@familyhealth.com.au>
Cc: Karim Nassar <karim.nassar@NAU.EDU>
Cc: pgsql-performance@postgresql.org
Subject: Re: Delete query takes exorbitant amount of time
Date: Fri, 25 Mar 2005 01:58:20 -0500
Message-ID: <20845.1111733900@sss.pgh.pa.us> (raw)
In-Reply-To: <4243879B.10200@familyhealth.com.au>
References: <1111709457.9085.127.camel@k2.cet.nau.edu>
<2630.1111711927@sss.pgh.pa.us>
<1111715131.9085.174.camel@k2.cet.nau.edu>
<3750.1111715318@sss.pgh.pa.us>
<4243879B.10200@familyhealth.com.au>
Christopher Kings-Lynne <chriskl@familyhealth.com.au> writes:
>> In that case there's a datatype mismatch between the referencing and
>> referenced columns, which prevents the index from being used for the
>> FK check.
> Is creating such a foreign key a WARNING yet?
I believe so as of 8.0. It's a bit tricky since 8.0 does allow some
cross-type cases to be indexed, but IIRC we have a test that understands
about that...
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, chriskl@familyhealth.com.au, karim.nassar@NAU.EDU
Subject: Re: Delete query takes exorbitant amount of time
In-Reply-To: <20845.1111733900@sss.pgh.pa.us>
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