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Re: WIP: parameterized function scan

From: Antonin Houska <antonin(dot)houska(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: WIP: parameterized function scan
Date: 2012-06-07 23:04:53
Message-ID: 4FD13395.2010608@gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers
On 05/24/2012 12:46 AM, Tom Lane wrote:
> Well, it's not per spec: what you did accepts queries that are invalid
> per spec and are very likely to be errors rather than intentional
> invocations of the LATERAL facility.  This might be all right for
>
I think I saw queries where function is joined with no explicit LATERAL().

Nevertheless...
> Quite honestly, I think that something that only handles functions as
> LATERAL righthands is broken by design.  It doesn't meet the spec, and
> it's unlikely to represent much of a step towards a full implementation.
> Remember Polya's Inventor's Paradox: the more general problem may be
> easier to solve.
... sounds more serious. I'll keep it in mind if I get the impression 
that I have a new idea about this problem anytime. Thanks,
Tony H.

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