Re: Re: Should we have an optional limit on the recursion depth of recursive CTEs?

From: Andrew Dunstan <andrew(at)dunslane(dot)net>
To: Magnus Hagander <magnus(at)hagander(dot)net>
Cc: Greg Stark <stark(at)mit(dot)edu>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Peter Geoghegan <peter(at)2ndquadrant(dot)com>, PG Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Re: Should we have an optional limit on the recursion depth of recursive CTEs?
Date: 2011-08-16 11:23:48
Message-ID: 4E4A5344.7040004@dunslane.net
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On 08/16/2011 04:56 AM, Magnus Hagander wrote:
> On Mon, Aug 15, 2011 at 23:49, Greg Stark<stark(at)mit(dot)edu> wrote:
>> On Mon, Aug 15, 2011 at 9:31 PM, Tom Lane<tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>>> ... and that would be a seriously bad API. There are not SUSET
>>> restrictions on other resources such as work_mem. Why do we need
>>> one for this?
>> I think a better analogy would be imposing a maximum number of rows a
>> query can output. That might be a sane thing to have for some
>> circumstances but it's not useful in general.
> Uh. You mean like LIMIT, which we already have?

There is no LIMIT imposed on a query by a server setting, which would be
the right analogy here.

cheers

andrew

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