• 创建数据表：

mysql> use simonwang

Database changed

mysql> show tables;

Empty set (0.00 sec)

mysql> create table t1 (`id` int(4), `name` char(40));

Query OK, 0 rows affected (0.01 sec)

• 插入数据：

mysql> insert into studytable values(1,'test');

Query OK, 1 row affected (0.00 sec)

mysql> select * from studytable;

+------+------+

| id   | name |

+------+------+

|    1 | test |

+------+------+

1 row in set (0.00 sec)

• 修改数据：

mysql> update studytable set name='updatetest' where id='1';

Query OK, 1 row affected (0.00 sec)

Rows matched: 1  Changed: 1  Warnings: 0

mysql> select * from studytable;

+------+------------+

| id   | name       |

+------+------------+

|    1 | updatetest |

+------+------------+

1 row in set (0.00 sec)

• 清空数据表：

mysql> truncate table studytable;

Query OK, 0 rows affected (0.00 sec)

mysql> select * from studytable;

Empty set (0.00 sec)

• 删除数据表：

mysql> drop table studytable;

Query OK, 0 rows affected (0.00 sec)

• 删除数据库：

mysql> drop database simonwang;

Query OK, 0 rows affected (0.01 sec)