Re: from_collapse_limit considerations

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Antonin Houska <ah(at)cybertec(dot)at>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: from_collapse_limit considerations
Date: 2014-09-22 15:43:19
Message-ID: 15116.1411400599@sss.pgh.pa.us
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

Antonin Houska <ah(at)cybertec(dot)at> writes:
> I noticed that - unlike join_collapse_limit - the from_collapse_limit does not
> enforce maximum length of the top-level list. Shouldn't it do?

How would it do that? You want it to fail outright if there are more than
N tables? That seems unhelpful.

> Also, the order of FROM-list items seems to affect the way RTEs are grouped
> into (sub)lists.

Yeah.

regards, tom lane

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Antonin Houska 2014-09-22 17:16:30 from_collapse_limit considerations
Previous Message Andres Freund 2014-09-22 14:07:58 Re: documentation references invalid -A assertion checks option