mysql创建存储过程测试

1.创建数据库test3：create databse test3；

2.创建表t2：
use test3;
create table t2 (id int,name char(50),dtime timestamp);

mysql> select * from t2;
Empty set (0.00 sec)

3.创建procedure来循环插入数据到新建的t2表中

mysql> DELIMITER $$
mysql> CREATE PROCEDURE t2insert(IN count INT)
    -> BEGIN
    -> DECLARE i INT DEFAULT 0;
    -> WHILE i<count
    -> DO
    -> insert into t2 values(i,concat('yoo',i),CURRENT_TIMESTAMP());
    -> SET i=i+1;
    -> END WHILE ;
    -> END$$
Query OK, 0 rows affected (0.06 sec)

4.查看存储过程的信息：
DELIMITER ;
show procedure status like '%insert%' \G;
show create procedure t2insert \G;
select * from information_schema.routines where routine_name = 't2insert' \G;

mysql> show procedure status like '%insert%' \G;
*************************** 1. row ***************************
                  Db: test3
                Name: t2insert
                Type: PROCEDURE
             Definer: root@localhost
            Modified: 2018-06-10 22:13:09
             Created: 2018-06-10 22:13:09
       Security_type: DEFINER
             Comment:
character_set_client: gbk
collation_connection: gbk_chinese_ci
  Database Collation: utf8_general_ci
1 row in set (0.00 sec)

5.调用存储过程

mysql> call t2insert(10);
Query OK, 1 row affected (0.65 sec)

mysql> select * from t2;
+------+------+---------------------+
| id   | name | dtime               |
+------+------+---------------------+
|    0 | yoo0 | 2018-06-10 22:18:25 |
|    1 | yoo1 | 2018-06-10 22:18:26 |
|    2 | yoo2 | 2018-06-10 22:18:26 |
|    3 | yoo3 | 2018-06-10 22:18:26 |
|    4 | yoo4 | 2018-06-10 22:18:26 |
|    5 | yoo5 | 2018-06-10 22:18:26 |
|    6 | yoo6 | 2018-06-10 22:18:26 |
|    7 | yoo7 | 2018-06-10 22:18:26 |
|    8 | yoo8 | 2018-06-10 22:18:26 |
|    9 | yoo9 | 2018-06-10 22:18:26 |
+------+------+---------------------+
10 rows in set (0.00 sec)

6.可以使用alter修改存储过程的简单特性但并不能修改过程体,所以要修改过程体的SQL语句只能
   drop删除后重新创建
alter procedure
drop procedure t2insert;