Re: Relpartbound, toasting and pg_class

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Andres Freund <andres(at)anarazel(dot)de>
Cc: Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Relpartbound, toasting and pg_class
Date: 2017-06-12 21:43:33
Message-ID: 11481.1497303813@sss.pgh.pa.us
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Andres Freund <andres(at)anarazel(dot)de> writes:
> On 2017-06-12 17:10:28 -0400, Peter Eisentraut wrote:
>> Cases where relacl became too large have been known to exist. I'm not
>> sure whether relpartbound can really be that large to change the
>> scenario significantly.

> Because it's further increasing the size by something unbounded in size,
> which'll not uncommonly be large? It makes a fair amount of sense to
> partition by multiple columns at once (using the expression syntax).

How about gathering some actual evidence on the point --- ie, how big
a partition expression do you need to make it fall over?

regards, tom lane

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