Re: On partitioning

Tom Lane <tgl@sss.pgh.pa.us>

From: Tom Lane <tgl@sss.pgh.pa.us>
To: Alvaro Herrera <alvherre@2ndquadrant.com>
Cc: Greg Stark <stark@mit.edu>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2014-08-29T17:15:16Z
Lists: pgsql-hackers
Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> Tom Lane wrote:
>> One other interesting thought that occurs to me: are we going to support
>> UPDATEs that cause a row to belong to a different partition?  If so, how
>> are we going to handle the update chain links?

> Bah, I didn't mention it?  My current thinking is that it would be
> disallowed; if you have chosen your partitioning key well enough it
> shouldn't be necessary.  As a workaround you can always DELETE/INSERT.
> Maybe we can allow it later, but for a first cut this seems more than
> good enough.

Hm.  I certainly agree that it's a case that could be disallowed for a
first cut, but it'd be nice to have some clue about how we might allow it
eventually.

			regards, tom lane