Re: Re: new patch of MERGE (merge_204) & a question about duplicated ctid

From: "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov>
To: <greg(at)2ndquadrant(dot)com>,<heikki(dot)linnakangas(at)enterprisedb(dot)com>
Cc: <simon(at)2ndquadrant(dot)com>,<marko(dot)tiikkaja(at)cs(dot)helsinki(dot)fi>, <bxzhai2010(at)gmail(dot)com>, <robertmhaas(at)gmail(dot)com>, <pgsql-hackers(at)postgresql(dot)org>, <sfrost(at)snowman(dot)net>
Subject: Re: Re: new patch of MERGE (merge_204) & a question about duplicated ctid
Date: 2011-01-04 12:04:48
Message-ID: 4D22B8800200002500038F93@gw.wicourts.gov
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Greg Smith wrote:

> I could see shipping this with the automatic heavy LOCK TABLE in
> there.

How would you handle or document behavior in REPEATABLE READ
isolation? The lock doesn't do much good unless you acquire it
before you get your snapshot, right?

-Kevin

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