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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