mysql学习记录（十）--存储过程(四)
er $$
mysql> create procedure payment_stat()
-> begin
-> DECLARE i_staff_id int;
-> DECLARE d_amount int;
-> declare tmp_name varchar(30) default "";
-> DECLARE cur_payment cursor for select staff_id,amount from payment;
-> DECLARE EXIT HANDLER FOR NOT FOUND CLOSE cur_payment;
->
-> set @x1 = 0 ;
-> set @x2 = 0 ;
->
-> open cur_payment;
-> fetch cur_payment into i_staff_id,d_amount;
-> while(i_staff_id <=3 )
-> do
-> if i_staff_id < 3 then
-> set @x1 = @x1+ i_staff_id;
-> else
-> set @x2 = @x2+ d_amount;
-> end if;
-> fetch cur_payment into i_staff_id,d_amount;
-> end while;
-> close cur_payment;
->
-> select @x1,@x2;
-> end;
-> $$
Query OK, 0 rows affected (0.01 sec)
mysql> call payment_stat();
-> $$
+------+-------+
| @x1 | @x2 |
+------+-------+
| 3 | 30000 |
+------+-------+
1 row in set (0.01 sec)
Query OK, 0 rows affected (0.01 sec)
mysql> delimiter $$
mysql> create procedure payment_stat()
-> begin
-> DECLARE i_staff_id int;
-> DECLARE d_amount int;
->
-> DECLARE cur_payment cursor for select staff_id,amount from payment;
-> DECLARE EXIT HANDLER FOR NOT FOUND CLOSE cur_payment;
->
-> set @x1 = 0 ;
-> set @x2 = 0 ;
->
-> open cur_payment;
-> fetch cur_payment into i_staff_id,d_amount;
-> while(i_staff_id <=3 )
-> do
-> if i_staff_id < 3 then
-> set @x1 = @x1+ i_staff_id + 1;
-> else
-> set @x2 = @x2+ d_amount ;
-> end if;
-> fetch cur_payment into i_staff_id,d_amount;
-> end while;
-> close cur_payment;
->
-> select @x1,@x2;
-> end;
-> $$
Query OK, 0 rows affected (0.00 sec)
mysql> delimiter ;
mysql> call payment_stat();
+------+-------+
| @x1 | @x2 |
+------+-------+
| 3 | 30000 |
+------+-------+
1 row in set (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
mysql>
drop procedure payment_stat;
Query OK, 0 rows affected (0.00 sec)
mysql> delimiter $$
mysql> create procedure payment_stat()
-> begin
-> DECLARE i_staff_id int;
-> DECLARE d_amount int;
->
-> DECLARE cur_payment cursor for select staff_id,amount from payment;
-> DECLARE EXIT HANDLER FOR NOT FOUND CLOSE cur_payment;
->
-> set @x1 = 0 ;
-> set @x2 = 0 ;
->
-> open cur_payment;
-> fetch cur_payment into i_staff_id,d_amount;
-> while(i_staff_id <=3 )
-> do
-> if i_staff_id < 3 then
-> set @x1 = @x1+ i_staff_id;
-> else
-> set @x2 = @x2+ d_amount;
-> end if;
-> fetch cur_payment into i_staff_id,d_amount;
-> end while;
-> close cur_payment;
->
-> select @x1,@x2;
-> end;
-> $$
Query OK, 0 rows affected (0.00 sec)
mysql> delimiter ;
mysql> call payment_stat();
+------+-------+
| @x1 | @x2 |
+------+-------+
| 3 | 30000 |
+------+-------+
1 row in set (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
mysql> delimiter $$
mysql> create procedure payment_stat()
-> begin
-> DECLARE i_staff_id int;
-> DECLARE d_amount int;
->
-> DECLARE cur_payment cursor for select staff_id,amount from payment;
-> DECLARE EXIT HANDLER FOR NOT FOUND CLOSE cur_payment;
->
-> set @x1 = 0 ;
-> set @x2 = 0 ;
->
-> open cur_payment;
-> fetch cur_payment into i_staff_id,d_amount;
-> while(i_staff_id <=3 )
-> do
-> if i_staff_id < 3 then
-> set @x1 = @x1+ i_staff_id + 1;
-> else
-> set @x2 = @x2+ d_amount;
-> end if;
-> fetch cur_payment into i_staff_id,d_amount;
-> end while;
-> close cur_payment;
->
-> select @x1,@x2;
-> end;
-> $$
Query OK, 0 rows affected (0.01 sec)
mysql> delimiter ;
mysql> call payment_stat();
+------+-------+
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