MySQL 如何使用查询更改表列中日期的格式

要更改日期格式，请使用DATE_FORMAT（）函数。首先，让我们创建一个表 –

mysql> create table DemoTable1906
   (
   DueTime datetime
   );
Query OK, 0 rows affected (0.00 sec)

使用插入命令在表中插入一些记录 –

mysql> insert into DemoTable1906 values(now());
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1906 values(curdate());
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1906 values('2017-10-11');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1906 values('2015-01-12');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1906 values('2018-04-25');
Query OK, 1 row affected (0.00 sec)

使用select语句显示来自表的所有记录 –

mysql> select * from DemoTable1906;

这将产生以下输出 –

+---------------------+
| DueTime             |
+---------------------+
| 2019-12-11 13:54:22 |
| 2019-12-11 00:00:00 |
| 2017-10-11 00:00:00 |
| 2015-01-12 00:00:00 |
| 2018-04-25 00:00:00 |
+---------------------+
5 rows in set (0.00 sec)

以下是更改日期格式的查询 –

mysql> select date_format(DueTime,'%d-%m-%Y') from DemoTable1906;

这将产生以下输出 –

+---------------------------------+
| date_format(DueTime,'%d-%m-%Y') |
+---------------------------------+
| 11-12-2019                      |
| 11-12-2019                      |
| 11-10-2017                      |
| 12-01-2015                      |
| 25-04-2018                      |
+---------------------------------+
5 rows in set (0.00 sec)