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From: Robert Haas <robertmhaas@gmail.com>
To: Pavel Stehule <pavel.stehule@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Subject: Re: proposal: schema variables
Date: Thu, 2 Nov 2017 18:05:54 +0530
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On Thu, Oct 26, 2017 at 12:51 PM, Pavel Stehule <pavel.stehule@gmail.com> wrote:
> The variables can be modified by SQL command SET (this is taken from
> standard, and it natural)
>
> SET varname = expression;

Overloading SET to handle both variables and GUCs seems likely to
create problems, possibly including security problems.  For example,
maybe a security-definer function could leave behind variables to
trick the calling code into failing to set GUCs that it intended to
set.  Or maybe creating a variable at the wrong time will just break
things randomly.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company


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  Subject: Re: proposal: schema variables
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