oracle RETURNING 子句使用方法

UPDATE table_name SET expr1
RETURNING column_name
INTO xxx

VARIABLE var_name varchar2(10)
UPDATE table_name SET expr1
RETURNING column_name INTO :var_name;

CREATE TABLE TEST111(
    A1 VARCHAR(10),
    A2 VARCHAR(20)
);

CREATE SEQUENCE TEST111_S1
START WITH 1
INCREMENT BY 1
CACHE 20
MAXVALUE 999999999999999999999999999
CYCLE;

DECLARE 
 SEQ NUMBER;
BEGIN
 INSERT INTO TEST111 VALUES(TEST111_S1.NEXTVAL,'AAA2')
 RETURNING A1 INTO SEQ;
 DBMS_OUTPUT.PUT_LINE(SEQ);
END; 

DECLARE 
 SEQ NUMBER;
BEGIN
 INSERT INTO TEST111 VALUES(TEST111_S1.NEXTVAL,'AAA3');
 SELECT TEST111_S1.CURRVAL INTO SEQ FROM DUAL;
 COMMIT;
 DBMS_OUTPUT.PUT_LINE(SEQ);
END; 

DECLARE
TYPE table_type IS TABLE OF column_name%TYPE;
v_tab table_type;
BEGIN
 UPDATE table_name
 SET expr1
 RETURNING column_name BULK COLLECT INTO v_tab;

 FOR i IN v_tab.first .. v_tab.last LOOP
 DBMS_OUTPUT.put_line( l_tab(i));
END LOOP;

COMMIT;
END;

create or replace procedure p_stu_info(s_id number, s_name varchar2) is
 v_name  varchar2(10);
 v_age  number;
 v_ErrMsg varchar2(200);
begin
 execute immediate 'select name,age from student_test where id=:1 and name=:2'
  using s_id, s_name
  returning into v_name, v_age;
 dbms_output.put_line(v_name || '的年龄为' || to_char(v_age));
exception
 when others then
  v_ErrMsg := SUBSTRB(SQLERRM, 1, 200);
  dbms_output.put_line('找不到相应学生');
end p_stu_info;

create or replace procedure p_stu_info(s_id number, s_name varchar2) is
 v_name  varchar2(10);
 v_age  number;
 v_ErrMsg varchar2(200);
begin
 execute immediate 'select name,age from student_test where id=:1 and name=:2'
  into v_name, v_age
  using s_id, s_name;
 dbms_output.put_line(v_name || '的年龄为' || to_char(v_age));
exception
 when others then
  v_ErrMsg := SUBSTRB(SQLERRM, 1, 200);
  dbms_output.put_line('找不到相应学生，错误原因'||v_ErrMsg);
end p_stu_info;