Re: How to add function schema in search_path in option definitio

On 7/8/23 10:00, Lorusso Domenico wrote:
> Hello Adrian,
> I've created a schema to handle some specific features.
> In the schema there are a couple of tables used by many functions (more
> than 20).
> In other words, I've created a schema as a package (as suggested in many
> points).
>
> I wish, in a function of this schema, to be able to call each other
> functions of this schema without adding the schema name in the call
> instruction.
>
> For example:
> in schema my_schema there are function foo and bar.
>
> in foo I need to call bar:
> foo as $$
> begin
>     [...]
>     _returnOfBar=my_schema.bar(p1,p2,..,pn);
>     [...]
> end;
> $$
>
> I'd like to use just _returnOfBar=bar(p1,p2,..,pn);

I see three choices:

1) On connection do

select set_config('search_path', 'test, ' ||
current_setting('search_path'), 'f');

with 't' to restrict to the transaction or with 'f' to restrict to session.

2) Include the search_path reset inside each function.

Or use the SET configuration_parameter { TO value | = value | FROM
CURRENT } to CREATE FUNCTION per:

https://www.postgresql.org/docs/current/sql-createfunction.html

3) If all this is being done by one role and for this purpose only then
from here:

https://www.postgresql.org/docs/current/sql-alterrole.html

ALTER ROLE { role_specification | ALL } [ IN DATABASE database_name ]
SET configuration_parameter { TO | = } { value | DEFAULT }

Be sure and read the complete docs for the caveats.

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> Il giorno sab 8 lug 2023 alle ore 17:46 Adrian Klaver
> <adrian(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>> ha scritto:
>
> On 7/8/23 08:06, Lorusso Domenico wrote:
> > Hello guys,
> > there is a comfortable way to add the schema of the function as in
> > search path?
> >
> > something like
> > create my_schema.function() as $body$...$body$
> > set search_path to function_schema() || search_path
>
> You can do something like:
>
>
> show  search_path ;
>     search_path
> -----------------
>   public, history
>
>
> select set_config('search_path', 'test, ' ||
> current_setting('search_path'), 'f');
>        set_config
> -----------------------
>   test, public, history
>
> show  search_path ;
>        search_path
> -----------------------
>   test, public, history
>
> >
> > --
> > Domenico L.
> >
> > per stupire mezz'ora basta un libro di storia,
> > io cercai di imparare la Treccani a memoria... [F.d.A.]
>
> --
> Adrian Klaver
> adrian(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>
>
>
>
> --
> Domenico L.
>
> per stupire mezz'ora basta un libro di storia,
> io cercai di imparare la Treccani a memoria... [F.d.A.]

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com