mysql实例：在存储过程中创建临时表

在mysql的存储过程创建临时表的例子，是学习mysql 临时表操作的不错的例子。

操作步骤：

mysql>
mysql>
mysql> CREATE TABLE Employee( //创建普通表
    ->     id            int,
    ->     first_name    VARCHAR(15),
    ->     last_name     VARCHAR(15),
    ->     start_date    DATE,
    ->     end_date      DATE,
    ->     salary        FLOAT(8,2),
    ->     city          VARCHAR(10),
    ->     description   VARCHAR(15)
    -> );
Query OK, 0 rows affected (0.03 sec)

mysql>
mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->              values (1,‘Jason‘,    ‘Martin‘,  ‘19960725‘,  ‘20060725‘, 1234.56, ‘Toronto‘,  ‘Programmer‘);
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->               values(2,‘Alison‘,   ‘Mathews‘,  ‘19760321‘, ‘19860221‘, 6661.78, ‘Vancouver‘,‘Tester‘);
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->               values(3,‘James‘,    ‘Smith‘,    ‘19781212‘, ‘19900315‘, 6544.78, ‘Vancouver‘,‘Tester‘);
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->               values(4,‘Celia‘,    ‘Rice‘,     ‘19821024‘, ‘19990421‘, 2344.78, ‘Vancouver‘,‘Manager‘);
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->               values(5,‘Robert‘,   ‘Black‘,    ‘19840115‘, ‘19980808‘, 2334.78, ‘Vancouver‘,‘Tester‘);
Query OK, 1 row affected (0.01 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->               values(6,‘Linda‘,    ‘Green‘,    ‘19870730‘, ‘19960104‘, 4322.78,‘New York‘,  ‘Tester‘);
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->               values(7,‘David‘,    ‘Larry‘,    ‘19901231‘, ‘19980212‘, 7897.78,‘New York‘,  ‘Manager‘);
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,   salary,  City,       Description)
    ->               values(8,‘James‘,    ‘Cat‘,     ‘19960917‘,  ‘20020415‘, 1232.78,‘Vancouver‘, ‘Tester‘);
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> select * from Employee; //查询数据
+------+------------+-----------+------------+------------+---------+-----------+-------------+
| id   | first_name | last_name | start_date | end_date   | salary  | city      | description |
+------+------------+-----------+------------+------------+---------+-----------+-------------+
|    1 | Jason      | Martin    | 1996-07-25 | 2006-07-25 | 1234.56 | Toronto   | Programmer  |
|    2 | Alison     | Mathews   | 1976-03-21 | 1986-02-21 | 6661.78 | Vancouver | Tester      |
|    3 | James      | Smith     | 1978-12-12 | 1990-03-15 | 6544.78 | Vancouver | Tester      |
|    4 | Celia      | Rice      | 1982-10-24 | 1999-04-21 | 2344.78 | Vancouver | Manager     |
|    5 | Robert     | Black     | 1984-01-15 | 1998-08-08 | 2334.78 | Vancouver | Tester      |
|    6 | Linda      | Green     | 1987-07-30 | 1996-01-04 | 4322.78 | New York  | Tester      |
|    7 | David      | Larry     | 1990-12-31 | 1998-02-12 | 7897.78 | New York  | Manager     |
|    8 | James      | Cat       | 1996-09-17 | 2002-04-15 | 1232.78 | Vancouver | Tester      |
+------+------------+-----------+------------+------------+---------+-----------+-------------+
8 rows in set (0.00 sec)

mysql>
mysql>
mysql>
mysql> delimiter $$
mysql>
mysql> CREATE PROCEDURE myProc() //创建存储过程、并创建临时表
    ->
    -> BEGIN
    ->   DROP TEMPORARY TABLE IF EXISTS employeeTemp;
    ->   CREATE TEMPORARY TABLE employeeTemp AS
    ->   SELECT id,start_date
    ->     FROM employee;
    -> END$$
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql> delimiter ;
mysql> call myProc(); //调用存储过程
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> select * from employeeTemp;
+------+------------+
| id   | start_date |
+------+------------+
|    1 | 1996-07-25 |
|    2 | 1976-03-21 |
|    3 | 1978-12-12 |
|    4 | 1982-10-24 |
|    5 | 1984-01-15 |
|    6 | 1987-07-30 |
|    7 | 1990-12-31 |
|    8 | 1996-09-17 |
+------+------------+
8 rows in set (0.00 sec)

mysql> drop TEMPORARY TABLE employeeTemp; //删除临时表
Query OK, 0 rows affected (0.00 sec)

mysql> drop procedure myProc; //删除存储过程
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql>
mysql>
mysql>
mysql> drop table Employee; //删除普通表
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql>

/*******************************/

一，创建数据库

mysql>create database db_proc;

二，创建表

mysql>CREATE TABLE `proc_test` (
`id` tinyint(4) NOT NULL AUTO_INCREMENT,  #ID,自动增长
`username` varchar(20) NOT NULL, #用户名
`password` varchar(20) NOT NULL, #密码
PRIMARY KEY (`id`) #主键
) ENGINE=MyISAM AUTO_INCREMENT=50 DEFAULT CHARSET=utf8; #设置表引擎和字符集

三、创建存储过程

create procedure mytest(in name varchar(20),in pwd varchar(20))#定义传入的参数
begin
insert into proc_test(username,password) values(name,pwd);
#把传进来的参数name和pwd插入表中，别忘记分号
end; #注意这个分号别忘记了

四、测试调用存储过程
用法：call 存储过程名称（传入的参数）

call proc_test("绝心是凉白开","www.ttlsa.com")

username为”绝心是凉白开“传入数据库中,密码”www.ttlsa.com“

五、查看数据库中有无加入的数据

select * from proc_test where username=‘绝心是凉白开’;#如果有内容说明成功了

六、删除存储过程
drop procdure 存储过程名;