text: CREATE TABLE file (
    id serial PRIMARY KEY,
    url text NOT NULL UNIQUE,
    filename text NOT NULL DEFAULT '',
    mime_type text NOT NULL DEFAULT '',
    description text NOT NULL DEFAULT '',
    is_uploaded boolean NOT NULL DEFAULT FALSE,
    created_at timestamp with time zone NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at timestamp with time zone NOT NULL DEFAULT CURRENT_TIMESTAMP
  );
  
  CREATE TRIGGER row_updated_at_on_file_trigger_
    BEFORE UPDATE ON file
    FOR EACH ROW
    EXECUTE PROCEDURE update_row_updated_at_function_ ();
  
  ---- create above / drop below ----
  DROP TABLE file;
  