【SQL】利用sql语句在mysql的表中插入date类型的数据，

╰半橙微兮° 2022-11-19 15:58 154阅读 0赞

一. 创建一个数据库

create database test

二. 在数据库中创建表

create TABLE employees (emp_no int(4) not null,birth_date date  not null,first_name varchar(14) not null,last_name varchar(16) not null,gender char(1) not null,hire_dare date not null,primary key (emp_no));

三. 表结构

四. 插入记录

mysql> insert into employees values(2,1998-07-14,'li','bc','w',2019-02-21);
    Query OK, 1 row affected, 2 warnings (0.00 sec)

可以看到有告警

五. 查看表内容

mysql> select * from employees;
    +--------+------------+------------+-----------+--------+------------+
    | emp_no | birth_date | first_name | last_name | gender | hire_dare  |
    +--------+------------+------------+-----------+--------+------------+
    |      1 | 0000-00-00 | mai        | yp        | m      | 0000-00-00 |
    |      2 | 0000-00-00 | li         | bc        | w      | 0000-00-00 |

插入date类型的字段失效

六. 解决

mysql> insert into employees values(3,1998-07-14,'li','bc','w',20190211);
    ERROR 1062 (23000): Duplicate entry '3' for key 'PRIMARY'
    mysql> insert into employees values(4,1998-07-14,'li','bc','w',20190211);
    Query OK, 1 row affected, 1 warning (0.05 sec)
    
    mysql> select * from employees;
    +--------+------------+------------+-----------+--------+------------+
    | emp_no | birth_date | first_name | last_name | gender | hire_dare  |
    +--------+------------+------------+-----------+--------+------------+
    |      1 | 0000-00-00 | mai        | yp        | m      | 0000-00-00 |
    |      2 | 0000-00-00 | li         | bc        | w      | 0000-00-00 |
    |      3 | 0000-00-00 | li         | bc        | w      | 0000-00-00 |
    |      4 | 0000-00-00 | li         | bc        | w      | 2019-02-11 |
    +--------+------------+------------+-----------+--------+------------+
    4 rows in set (0.00 sec)

参考：[https://blog.csdn.net/lycyl/article/details/45689163][https_blog.csdn.net_lycyl_article_details_45689163]

[https_blog.csdn.net_lycyl_article_details_45689163]: https://blog.csdn.net/lycyl/article/details/45689163