创建MySQL存储过程示例
下文将教您如何创建MySQL存储过程,并附上了详细的步骤,如果您在MySQL存储过程方面遇到过问题,不妨一看,对您会有所帮助。 --选择数据库 mysql usetest; Databasechanged --创建示例用表 mysql createtablezzm( - idintprimarykeyauto_increment, - nameva
下文将教您如何创建MySQL存储过程,并附上了详细的步骤,如果您在MySQL存储过程方面遇到过问题,不妨一看,对您会有所帮助。
--选择数据库
-
<span><span>mysql</span><span class="tag">></span><span> use test; </span></span>
Copy after login - Database changed
--创建示例用表
-
<span><span>mysql</span><span class="tag">></span><span> create table zzm( </span></span>
Copy after login - -> id int primary key auto_increment,
- -> name varchar(10)
- -> );
- Query OK, 0 rows affected (0.20 sec)
- mysql> insert into zzm(name) values('zhang');
- Query OK, 1 row affected (0.08 sec)
- mysql> insert into zzm(name) values('zeng');
- Query OK, 1 row affected (0.05 sec)
- mysql> insert into zzm(name) values('ming');
- Query OK, 1 row affected (0.05 sec)
- mysql> select * from zzm;
- +----+-------+
- | id | name |
- +----+-------+
- | 1 | zhang |
- | 2 | zeng |
- | 3 | ming |
- +----+-------+
- 3 rows in set (0.00 sec)
--更改命令结束符(因为在procedure中经常要用到默认的命令结束符--分号(;) --所以在创建procedure的时候需要定义新的结束符以说明创建procedure的命令结束) --这里将结束符号改成美元符号--$ mysql> delimiter $ --创建MySQL存储过程p3 --此存储过程的过程名是p3,该过程包含两个参数, --一个是输入类型的(以IN标示),参数名是nameid,类型是int, --一个是输出类型的(以OUT标示),参数名是person_name,类型是varchar(10) --此存储过程的作用是查询出zzm表的全部内容,会输出结果集(data set),然后 --再查询表中记录的ID是nameid的字段name,将其输出到第二个输出类型的参数里面,这个查询 --不会输出结果集。
-
<span><span>mysql</span><span class="tag">></span><span> create procedure p3(IN nameid int, OUT person_name varchar(10)) </span></span>
Copy after login - -> begin
- -> select * from test.zzm;
- -> select zzm.name into person_name from test.zzm where zzm.id = nameid;
- -> end
- -> $
- Query OK, 0 rows affected (0.00 sec)

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