Sådan indstilles en kontekstvariabel for en bruger/forbindelse

Du kan bruge en sessionsvariable i brugerdefineret skema:

postgres=# set myvars.language_id = 10;
SET
postgres=# show myvars.language_id;
 myvars.language_id 
--------------------
 10
(1 row)

eller via funktioner (http://www.postgresql.org/docs /9.4/static/functions-admin.html ):

postgres=# select set_config('myvars.language_id', '20', false);
 set_config 
------------
 20
(1 row)

postgres=# select current_setting('myvars.language_id');
 current_setting 
-----------------
 20
(1 row)