Thread: Modifying search_path in a stored procedure

I know I can SET the schema search_path in a stored procedure, but is
there any way to retrieve it first so that I can get the current value
and manipulate that rather than just replace it?

I've got two sets of data and two sets of functions in 4 respective
schemas. I want to select one set of data and one set of functions. It
is fairly straight forward. However, it would be nice if I want to swap
the schemas with the functions, I don't have to remember what data
schema I was using.

Thanks.

Eric Brown
408-571-6341
www.propel.com

On Tue, Jan 11, 2005 at 01:19:55PM -0800, Eric Brown wrote:

> I know I can SET the schema search_path in a stored procedure, but is
> there any way to retrieve it first so that I can get the current value
> and manipulate that rather than just replace it?

See the current_setting() and set_config() functions in the "Functions
and Operators" chapter of the documentation.  In 7.3 and 7.4 they're
in the "Miscellaneous Functions" section; in 8.0 they're in "System
Administration Functions."

--
Michael Fuhr
http://www.fuhr.org/~mfuhr/

Eric Brown <eric.brown@propel.com> writes:
> I know I can SET the schema search_path in a stored procedure, but is
> there any way to retrieve it first so that I can get the current value
> and manipulate that rather than just replace it?

current_setting() would produce the value you want to give back to SET
(or more likely set_config()).  There's also current_schema() and
current_schemas() if you want a more digested form.  See "System
Information Functions" and "System Administration Functions" in TFM.

It might also be that SET LOCAL would solve your problem with less fuss.

            regards, tom lane