cartodb-postgresql/cartodb_version.sql.in

DO $$ BEGIN IF EXISTS (SELECT * FROM pg_proc p, pg_namespace n WHERE p.proname = 'cdb_transformtowebmercator' AND p.pronamespace = n.oid AND n.nspname = 'public') THEN RAISE EXCEPTION 'Use CREATE EXTENSION cartodb FROM unpackaged'; END IF; END; $$ LANGUAGE 'plpgsql'; -- forbid duplicated extension

CREATE OR REPLACE FUNCTION cartodb.CDB_version()
RETURNS text AS $$
  SELECT '@@VERSION@@'::text;
$$ language 'sql' IMMUTABLE STRICT;