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mysql基础 default 向有默认值的字段中添加数据

  •        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 29 Server version: 8.0.12 MySQL Community Server - GPL Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved. 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; Database changed mysql> desc t_fruit; +--------------+------------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +--------------+------------------+------+-----+---------+----------------+ | id | int(10) unsigned | NO | PRI | NULL | auto_increment | | name | varchar(15) | NO | UNI | NULL | | | count | int(11) | NO | | NULL | | | price | decimal(6,3) | NO | | NULL | | | is_sales | tinyint(1) | NO | | 1 | | | note | varchar(255) | YES | | 无 | | | gmt_create | datetime | NO | | NULL | | | gmt_modified | datetime | NO | | NULL | | +--------------+------------------+------+-----+---------+----------------+ 8 rows in set (0.00 sec) mysql> insert into t_fruit (name,count,price,is_sales,note,gmt_create,gmt_modified) values('甜瓜',10,3.21,1,default,now(),now()); Query OK, 1 row affected (0.02 sec) mysql> select * from t_fruit; +----+--------+-------+-------+----------+------+---------------------+---------------------+ | id | name | count | price | is_sales | note | gmt_create | gmt_modified | +----+--------+-------+-------+----------+------+---------------------+---------------------+ | 1 | 甜瓜 | 10 | 3.210 | 1 | 无 | 2018-10-27 19:42:56 | 2018-10-27 19:42:56 | +----+--------+-------+-------+----------+------+---------------------+---------------------+ 1 row in set (0.00 sec) mysql> exit Bye stu@Ubuntu:~$

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最后修改时间:2021-12-16 18:01:08
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