mysql基础 show full fields 查看表中所有字段的注释

原创云散月明 All China Database Union 2021-04-23

954

OS : Ubuntu 18.04.1 LTS
DBMS : mysql 8.0.12

示例

stu@Ubuntu:~$ mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 27
Server version: 8.0.12 MySQL Community Server - GPL

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Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> use db_chinese_medicine;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> create table `t_fruit`(
    -> `id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键,自增长',
    -> `name` varchar(15) NOT NULL COMMENT '名称,唯一',
    -> `count` int(11) NOT NULL COMMENT '数量',
    -> `price` decimal(6,3) NOT NULL COMMENT '每两价格',
    -> `is_sales` tinyint(1) not null default 1 comment'销售状态，1为正在销售,0为停售',
    -> `note` varchar(255) default '无' comment'备注，默认：无',
    -> `gmt_create` datetime NOT NULL COMMENT '创建时间',
    -> `gmt_modified` datetime NOT NULL COMMENT '最后修改时间',
    -> PRIMARY KEY (`id`),
    -> UNIQUE KEY `name` (`name`)
    -> )
    -> ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='果部药物表';
Query OK, 0 rows affected (0.13 sec)

mysql> show full fields from t_fruit;
+--------------+------------------+--------------------+------+-----+---------+----------------+---------------------------------+--------------------------------------------+
| Field        | Type             | Collation          | Null | Key | Default | Extra          | Privileges                      | Comment                                    |
+--------------+------------------+--------------------+------+-----+---------+----------------+---------------------------------+--------------------------------------------+
| id           | int(10) unsigned | NULL               | NO   | PRI | NULL    | auto_increment | select,insert,update,references | 主键,自增长                                |
| name         | varchar(15)      | utf8mb4_0900_ai_ci | NO   | UNI | NULL    |                | select,insert,update,references | 名称,唯一                                  |
| count        | int(11)          | NULL               | NO   |     | NULL    |                | select,insert,update,references | 数量                                       |
| price        | decimal(6,3)     | NULL               | NO   |     | NULL    |                | select,insert,update,references | 每两价格                                   |
| is_sales     | tinyint(1)       | NULL               | NO   |     | 1       |                | select,insert,update,references | 销售状态，1为正在销售,0为停售              |
| note         | varchar(255)     | utf8mb4_0900_ai_ci | YES  |     | 无      |                | select,insert,update,references | 备注，默认：无                             |
| gmt_create   | datetime         | NULL               | NO   |     | NULL    |                | select,insert,update,references | 创建时间                                   |
| gmt_modified | datetime         | NULL               | NO   |     | NULL    |                | select,insert,update,references | 最后修改时间                               |
+--------------+------------------+--------------------+------+-----+---------+----------------+---------------------------------+--------------------------------------------+
8 rows in set (0.01 sec)

mysql> exit
Bye
stu@Ubuntu:~$ 

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