Re: Custom session variables? - Mailing list pgsql-general

From Tom Lane
Subject Re: Custom session variables?
Date
Msg-id 16931.1172871930@sss.pgh.pa.us
Whole thread Raw
In response to Re: Custom session variables?  (David Fetter <david@fetter.org>)
Responses Re: Custom session variables?  ("Adam Rich" <adam.r@sbcglobal.net>)
List pgsql-general
David Fetter <david@fetter.org> writes:
> On Fri, Mar 02, 2007 at 01:53:28PM -0600, Adam Rich wrote:
>> Is there any way to define custom variables per session scope?

> You can have them in PL/Perl(U), PL/Tcl(U) and PL/PythonU and other
> such PLs, and you can create SQL accessors for them.

Another possibility is the "customized GUC options" route: you can take
advantage of the fact that the backend will let you set variables that
don't exist yet, if they are in a namespace that postgresql.conf says
is OK.
http://www.postgresql.org/docs/8.2/static/runtime-config-custom.html
This approach probably doesn't scale nicely to a whole lotta values,
but for a dozen or so strings it'd work well enough.

            regards, tom lane

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