语法:
repeat SQL until 条件 end repeat;
就是相当于其他语言中的:
do{ # }while();
mysql> create procedure p1p() -> begin -> declare count int default 0; -> repeat -> select user(); -> set count = count + 1; -> until count>3 end repeat; -> end$ Query OK, 0 rows affected (0.00 sec) mysql> call p1p()$ +----------------+ | user() | +----------------+ | root@localhost | +----------------+ 1 row in set (0.00 sec) +----------------+ | user() | +----------------+ | root@localhost | +----------------+ 1 row in set (0.01 sec) +----------------+ | user() | +----------------+ | root@localhost | +----------------+ 1 row in set (0.01 sec) +----------------+ | user() | +----------------+ | root@localhost | +----------------+ 1 row in set (0.02 sec) Query OK, 0 rows affected (0.02 sec) mysql>
时间: 2024-12-25 15:20:21