"Andreas 'ads' Scherbaum" <adsmail@wars-nicht.de> writes:
> following this old discussion:
> http://archives.postgresql.org/pgsql-patches/2008-03/msg00402.php
> i modifies the patch to use the "CREATE [OR REPLACE] LANGUAGE" syntax.
This is not an "OR REPLACE" operation, because it doesn't replace
the existing definition. What you've got here is a CREATE IF NOT EXISTS
implementation that arbitrarily uses the other syntax. The point of
the previous discussion was summed up here:
http://archives.postgresql.org/pgsql-patches/2008-03/msg00416.php
namely that CREATE OR REPLACE should leave the object having the
properties specified in the command.
regards, tom lane