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创建MySQL存储过程示例

Jun 07, 2016 pm 04:14 PM
mysql create how storage Example process

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

  1. <span><span>mysql</span><span class="tag">></span><span> use test;  </span></span>
    Copy after login
  2. Database changed 

--创建示例用表

  1. <span><span>mysql</span><span class="tag">></span><span> create table zzm(  </span></span>
    Copy after login
  2. -> id int primary key auto_increment,  
  3. -> name varchar(10)  
  4. -> );  
  5. Query OK, 0 rows affected (0.20 sec)  
  6. mysql> insert into zzm(name) values('zhang');  
  7. Query OK, 1 row affected (0.08 sec)  
  8. mysql> insert into zzm(name) values('zeng');  
  9. Query OK, 1 row affected (0.05 sec)  
  10. mysql> insert into zzm(name) values('ming');  
  11. Query OK, 1 row affected (0.05 sec)  
  12. mysql> select * from zzm;  
  13. +----+-------+  
  14. | id | name |  
  15. +----+-------+  
  16. | 1 | zhang |  
  17. | 2 | zeng |  
  18. | 3 | ming |  
  19. +----+-------+  
  20. 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。

  1. <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
  2. -> begin  
  3. -> select * from test.zzm;  
  4. -> select zzm.name into person_name from test.zzm where zzm.id = nameid;  
  5. -> end  
  6. -> $  
  7. Query OK, 0 rows affected (0.00 sec)  
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