存储过程4:查询数据
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drop procedure if exists proc_name;delimiter //create procedure proc_name (in parameter integer)beginif parameter=0 thenselect * from student order by no asc;elseselect * from student order by height asc;end if;end;//delimiter ;call proc_name(0);+--------+----------+--------+| no | name | height |+--------+----------+--------+| 122654 | wangwu | 1.36 || 123654 | zhangsan | 1.56 || 129854 | lisi | 1.16 |+--------+----------+--------+call proc_name(5);+--------+----------+--------+| no | name | height |+--------+----------+--------+| 129854 | lisi | 1.16 || 122654 | wangwu | 1.36 || 123654 | zhangsan | 1.56 |+--------+----------+--------+
