mysql> delimiter //

mysql>

mysql> create procedure test1()

-> begin

-> declare l_add_bonus1 int default 1000;

-> declare l_add_bonus2 int default 500;

-> declare l_empno int;

-> declare l_sal,l_bonus decimal(15,2);

->

-> -- 游標結束的標志

-> declare done int default 0;

->

-> -- 聲明游標

-> declare emp_cur cursor for select empno,sal,comm from emp;

->

-> -- 指定游標循環結束時的返回值

-> declare continue handler for not found set done =1;

->

-> -- 打開游標

-> open emp_cur;

->

-> -- 開始loopU型內環

-> e_loop:loop

->

-> -- 根據游標 當前指向一條數據

-> fetch emp_cur into l_empno,l_sal,l_bonus;

->

-> -- 當 游標的返回值為 1 時 退出 loop循環

-> if done = 1 then

-> leave e_loop;

-> end if;

->

-> -- 如果獎金為空加500，如果獎金為0，不加，其它情況下加1000

-> if l_bonus is null then

-> update emp set comm = l_add_bonus2 where empno = l_empno;

-> elseif l_bonus = 0 then

-> begin

-> end;

-> else

-> update emp set comm = l_add_bonus1 + comm where empno = l_empno;

-> end if;

->

-> end loop;

-> -- 關閉游標

-> close emp_cur;

-> end//

Query OK, 0 rows affected (0.00 sec)

mysql>

mysql> delimiter ;

mysql>

mysql>

mysql>

mysql> select * from emp;

+-------+--------+-----------+------+------------+---------+---------+--------+

| empno | ename | job | mgr | hiredate | sal | comm | deptno |

+-------+--------+-----------+------+------------+---------+---------+--------+

| 7369 | SMITH | CLERK | 7902 | 1980-12-17 | 800.00 | NULL | 20 |

| 7499 | ALLEN | SALESMAN | 7698 | 1981-02-20 | 1600.00 | 300.00 | 30 |

| 7521 | WARD | SALESMAN | 7698 | 1981-02-22 | 1250.00 | 500.00 | 30 |

| 7566 | JONES | MANAGER | 7839 | 1981-04-02 | 2975.00 | NULL | 20 |

| 7654 | MARTIN | SALESMAN | 7698 | 1981-09-28 | 1250.00 | 1400.00 | 30 |

| 7698 | BLAKE | MANAGER | 7839 | 1981-05-01 | 2850.00 | NULL | 30 |

| 7782 | CLARK | MANAGER | 7839 | 1981-06-09 | 2450.00 | NULL | 10 |

| 7788 | SCOTT | ANALYST | 7566 | 1987-06-13 | 3000.00 | NULL | 20 |

| 7839 | KING | PRESIDENT | NULL | 1981-11-17 | 5000.00 | NULL | 10 |

| 7844 | TURNER | SALESMAN | 7698 | 1981-09-08 | 1500.00 | 0.00 | 30 |

| 7876 | ADAMS | CLERK | 7788 | 1987-06-13 | 1100.00 | NULL | 20 |

| 7900 | JAMES | CLERK | 7698 | 1981-12-03 | 950.00 | NULL | 30 |

| 7902 | FORD | ANALYST | 7566 | 1981-12-03 | 3000.00 | NULL | 20 |

| 7934 | MILLER | CLERK | 7782 | 1982-01-23 | 1300.00 | NULL | 10 |

+-------+--------+-----------+------+------------+---------+---------+--------+

14 rows in set (0.00 sec)

mysql>

mysql> call test1();

Query OK, 0 rows affected (0.04 sec)

4 rows in set (0.00 sec)

mysql> select * from emp;

+-------+--------+-----------+------+------------+---------+---------+--------+

| empno | ename | job | mgr | hiredate | sal | comm | deptno |

+-------+--------+-----------+------+------------+---------+---------+--------+

| 7369 | SMITH | CLERK | 7902 | 1980-12-17 | 800.00 | 500.00 | 20 |

| 7499 | ALLEN | SALESMAN | 7698 | 1981-02-20 | 1600.00 | 1300.00 | 30 |

| 7521 | WARD | SALESMAN | 7698 | 1981-02-22 | 1250.00 | 1500.00 | 30 |

| 7566 | JONES | MANAGER | 7839 | 1981-04-02 | 2975.00 | 500.00 | 20 |

| 7654 | MARTIN | SALESMAN | 7698 | 1981-09-28 | 1250.00 | 2400.00 | 30 |

| 7698 | BLAKE | MANAGER | 7839 | 1981-05-01 | 2850.00 | 500.00 | 30 |

| 7782 | CLARK | MANAGER | 7839 | 1981-06-09 | 2450.00 | 500.00 | 10 |

| 7788 | SCOTT | ANALYST | 7566 | 1987-06-13 | 3000.00 | 500.00 | 20 |

| 7839 | KING | PRESIDENT | NULL | 1981-11-17 | 5000.00 | 500.00 | 10 |

| 7844 | TURNER | SALESMAN | 7698 | 1981-09-08 | 1500.00 | 0.00 | 30 |

| 7876 | ADAMS | CLERK | 7788 | 1987-06-13 | 1100.00 | 500.00 | 20 |

| 7900 | JAMES | CLERK | 7698 | 1981-12-03 | 950.00 | 500.00 | 30 |

| 7902 | FORD | ANALYST | 7566 | 1981-12-03 | 3000.00 | 500.00 | 20 |

| 7934 | MILLER | CLERK | 7782 | 1982-01-23 | 1300.00 | 500.00 | 10 |

+-------+--------+-----------+------+------------+---------+---------+--------+

14 rows in set (0.00 sec)

總結

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