Re: INSERT ... ON CONFLICT {UPDATE | IGNORE}

From: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
To: Peter Geoghegan <pg(at)heroku(dot)com>
Cc: Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>, Craig Ringer <craig(at)2ndquadrant(dot)com>
Subject: Re: INSERT ... ON CONFLICT {UPDATE | IGNORE}
Date: 2014-09-26 22:11:05
Message-ID: 20140926221105.GH5311@eldon.alvh.no-ip.org
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Peter Geoghegan wrote:

> Can you really say that you won't have serious misgivings
> about something like the "tuple->xmin = InvalidTransactionId"
> swapping, if I actually formally propose it? That's very invasive to a
> lot of places. And right now, I have no idea how we could do better.

FWIW there are 28 callers of HeapTupleHeaderGetXmin.

--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

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