将VARCHAR数据转换为MySQL日期格式?
要将VARCHAR数据转换为日期格式,可以使用STR_TO_DATE()函数−
mysql> create table DemoTable1989
(
DueDate varchar(20)
);
Query OK, 0 rows affected (0.91 sec)
使用insert命令向表中插入一些记录−
mysql> insert into DemoTable1989 values('31/01/2015');
Query OK, 1 row affected (0.52 sec)
mysql> insert into DemoTable1989 values('01/12/2018');
Query OK, 1 row affected (0.09 sec)
mysql> insert into DemoTable1989 values('25/10/2019');
Query OK, 1 row affected (0.11 sec)
使用select语句显示表中的所有记录−
mysql> select * from DemoTable1989;
这将产生以下输出−
+------------+
| DueDate |
+------------+
| 31/01/2015 |
| 01/12/2018 |
| 25/10/2019 |
+------------+
3 rows in set (0.00 sec)
以下是将日期数据转换为MySQL日期格式的查询:
mysql> select str_to_date(DueDate,'%d/%m/%Y') as MySQLDateFormat from DemoTable1989;
这将产生以下输出−
+-----------------+
| MySQLDateFormat |
+-----------------+
| 2015-01-31 |
| 2018-12-01 |
| 2019-10-25 |
+-----------------+
3 rows in set (0.05 sec)
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