执行Oracle的insert或update语句时同时返回插入或更新后的字段值

执行Oracle的insert或update语句时同时返回插入或更新后的字段值

  出处: http://wxy0327.itpub.net/post/16888/94033 

    这是一个很有用并常用的语法，可以少一次查询。

insert:

CREATE SEQUENCE seq_emp;
SET SERVEROUTPUT ON
DECLARE   x emp.empno%TYPE; BEGIN   INSERT INTO emp   (empno, ename)   VALUES   (seq_emp.NEXTVAL, 'Morgan')   RETURNING empno   INTO x;
  dbms_output.put_line(x); END; /
DECLARE   x urowid; BEGIN   INSERT INTO emp   (empno, ename)   VALUES   (seq_emp.NEXTVAL, 'Morgan')   RETURNING rowid   INTO x;
  dbms_output.put_line(x); END; /

　

update:

conn hr/hr
  var bnd1 NUMBER   var bnd2 VARCHAR2(30)   var bnd3 NUMBER
  UPDATE employees   SET job_id ='SA_MAN', salary = salary + 1000, department_id = 140   WHERE last_name = 'Jones'   RETURNING salary*0.25, last_name, department_id   INTO :bnd1, :bnd2, :bnd3;
  print bnd1   print bnd2   print bnd3 conn hr/hr
  variable bnd1 NUMBER
  UPDATE employees   SET salary = salary * 1.1   WHERE department_id = 100   RETURNING SUM(salary) INTO :bnd1;
  print bnd1