From: Tom Lane <tgl@sss.pgh.pa.us>
To: gry@ll.mit.edu
Cc: pgsql-sql@postgresql.org
Subject: Re: tid_le comparison for tuple id (ctid) values?
Date: Mon, 21 Nov 2005 16:19:28 -0500
Message-ID: <4271.1132607968@sss.pgh.pa.us> (raw)
In-Reply-To: <20051121160016.282c66c2.gry@ll.mit.edu>
References: <20051121160016.282c66c2.gry@ll.mit.edu>
george young <gry@ll.mit.edu> writes:
> update steps set x=x||'X' from steps s where steps.key1=s.key1 and steps.key2=s.key2 and step.ctid<s.ctid;
> But this fails because there is no less-than operator (or function) on
> type "tid".
Probably a good thing, too, since if there was it wouldn't have anything
reliable to do with the age of the tuple.
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, gry@ll.mit.edu
Subject: Re: tid_le comparison for tuple id (ctid) values?
In-Reply-To: <4271.1132607968@sss.pgh.pa.us>
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