mysql实现联合查询视图的方法实例
mysql实现联合查询视图的方法实例

mysql>
mysql> create table employee(
    ->     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 (0.02 sec)

mysql>
mysql> create table job (
    ->   id         int,
    ->   title      varchar(20)
    -> );
query ok, 0 rows affected (0.06 sec)

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