mysql 建表、查表、查表結構

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進入資料庫:

1 mysql> use sunshine_blog;
輸出:2 Database changed

查資料庫表:

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

 

建表:auto_increment自動遞增;not null 非空;primary key(欄位) 主鍵;

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));
輸出:7 Query OK, 0 rows affected (0.16 sec)

顯示欄位、欄位資訊命令:

 1 mysql> show columns from test;
輸出: 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)

 

mysql 建表、查表、查表結構

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