How to run an ad-hoc script in PostgreSQL?

Question

I\'m trying to run this in PostgreSQL 9.2:

RAISE NOTICE \'hello, world!\';

And the server says:

Error : ERROR:  syntax erro         


        

Answer 1

raise is PL/pgSQL only.

http://www.postgresql.org/docs/current/static/plpgsql-errors-and-messages.html

create or replace function r(error_message text) returns void as $$
begin
    raise notice '%', error_message;
end;
$$ language plpgsql;

select r('an error message');
NOTICE:  an error message