Excerpts from Fabrízio de Royes Mello's message of mié oct 03 09:27:41 -0300 2012:
> 2012/10/2 Fabrízio de Royes Mello <fabriziomello@gmail.com> > > > > > You're right... the latest proposed patch don't implements it. > > > > I'll change the patch and send soon... > > > > > What is more reasonable? > * show a syntax error or > * show a message that you can not use the INE with contained objects
Second one.
Maybe something like this?
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("IF NOT EXISTS cannot be used with schema elements"),