DECLARE
	v_sql VARCHAR2(200);
	v_table VARCHAR2(30);
	v_clums NUMBER;
	CURSOR C1 IS SELECT TABLE_NAME FROM USER_TABLES WHERE TABLE_NAME LIKE 'UE_GW_%';
	BEGIN
		OPEN C1;
		LOOP
			FETCH C1 INTO v_table;
				select count(column_name) INTO v_clums from user_tab_columns where table_name= v_table AND COLUMN_NAME = 'HZZSY';
				IF v_clums = 0 THEN
				v_sql:='ALTER TABLE '||v_table||' ADD HZZSY VARCHAR2(50)';
				EXECUTE IMMEDIATE v_sql;
				END IF;
		END LOOP;
	CLOSE C1;
END;