Re: ERROR: cache lookup failed for collation 0 on DELETE query after upgrading from 9.X to 12.3

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: cen <cen(dot)is(dot)imba(at)gmail(dot)com>
Cc: pgsql-bugs(at)lists(dot)postgresql(dot)org
Subject: Re: ERROR: cache lookup failed for collation 0 on DELETE query after upgrading from 9.X to 12.3
Date: 2020-07-14 14:11:52
Message-ID: 2816678.1594735912@sss.pgh.pa.us
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cen <cen(dot)is(dot)imba(at)gmail(dot)com> writes:
> we are upgrading to 12.3 from 9.X and encountered an error with delete
> statements.
> 2020-07-14 15:26:20.728 CEST [67736] ERROR: cache lookup failed for
> collation 0

Please supply a self-contained example. (Mostly, I'm not interested
in trying to guess at your table schema.)

regards, tom lane

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