text: CREATE OR REPLACE FUNCTION test_function()
  RETURNS trigger
  AS $$
  BEGIN
  RAISE NOTICE 'Test trigger function created'
  RETURN NEW
  END
  $$
  LANGUAGE plpgsql
  CREATE TRIGGER test_trigger
  BEFORE INSERT ON public.posts
  FOR EACH ROW EXECUTE PROCEDURE test_function()
  DROP TRIGGER test_trigger ON public.posts