CREATE TABLE IF NOT EXISTS "image" ( "id" SERIAL PRIMARY KEY NOT NULL, "mime_type" VARCHAR(100) NOT NULL, "deleted_time" TIMESTAMP, "created_time" TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, "updated_time" TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ); CREATE OR REPLACE TRIGGER "update_image_updated_time" BEFORE UPDATE ON "image" FOR EACH ROW EXECUTE FUNCTION update_updated_time_column();