Question

delimiter//
create procedure exercise(out stat char(10),out fee double)
begin
    if stat=='AC executive' then set fee=100;
    else if stat=='AC Economi' then set fee=50;
    else set saldo=20;
    end if;
end//
delimiter;

Answer 1

您的if-else if不正确，应该是

if condition then do something
elseif condition then do something
else do something

elseif之间没有空格。另外，我想你的意思是fee而不是saldo。 out stat char(10)应为in stat varchar(100)，因为您使用参数作为输入

delimiter //
create procedure exercise(in stat varchar(100),out fee double)
begin
    if stat ='AC executive' then set fee=100;
    elseif stat = 'AC Economi' then set fee=50;
    else set fee=20;
    end if;
end;//

delimiter;

这是对mysql的测试

mysql> delimiter //
mysql> create procedure exercise(in stat varchar(100),out fee double)
    -> begin
    ->     if stat ='AC executive' then set fee=100;
    ->     elseif stat = 'AC Economi' then set fee=50;
    ->     else set fee=20;
    ->     end if;
    -> end;//
Query OK, 0 rows affected (0.00 sec)

mysql> delimiter ;


mysql> call exercise('AC executive',@o);
Query OK, 0 rows affected (0.00 sec)

mysql> select @o ;
+------+
| @o   |
+------+
|  100 |
+------+
1 row in set (0.00 sec)

sql if-else procedure prob，cant create procedure

1 个答案: