mysql 建表、查表、查表结构

1 mysql> use sunshine_blog;
输出：
2 Database changed

1 mysql> show tables;
输出：
2 +-------------------------+
3 | Tables_in_sunshine_blog |
4 +-------------------------+
5 | test                    |
6 | user                    |
7 +-------------------------+
8 2 rows in set (0.00 sec)

1 mysql> create table test(
2 -> name varchar(15),
3 -> email varchar(25),
4 -> phone_number int,
5 -> id int not null auto_increment,
6 -> primary key(id));
输出：
7 Query OK, 0 rows affected (0.16 sec)

 1 mysql> show columns from test;
输出：
 2 +--------------+-------------+------+-----+---------+----------------+
 3 | Field        | Type        | Null | Key | Default | Extra          |
 4 +--------------+-------------+------+-----+---------+----------------+
 5 | name         | varchar(15) | YES  |     | NULL    |                |
 6 | email        | varchar(25) | YES  |     | NULL    |                |
 7 | phone_number | int(11)     | YES  |     | NULL    |                |
 8 | id           | int(11)     | NO   | PRI | NULL    | auto_increment |
 9 +--------------+-------------+------+-----+---------+----------------+
10 4 rows in set (0.01 sec)