MySQL 如何按时间戳排序

要按时间戳排序，请使用ORDER BY，如以下语法所示−

select *from yourTableName ORDER BY STR_TO_DATE(`yourColumnName`,'%m/%d/%Y%h:%i:%s %p');

首先创建一个表示例−

mysql> create table DemoTable
   -> (
   -> `timestamp` varchar(100)
   -> );
Query OK, 0 rows affected (0.56 sec)

使用插入命令在表中插入一些记录−

mysql> insert into DemoTable values('06/22/2019 01:10:20 PM');
Query OK, 1 row affected (0.13 sec)

mysql> insert into DemoTable values('06/22/2019 12:00:27 PM');
Query OK, 1 row affected (0.26 sec)

mysql> insert into DemoTable values('06/22/2019 06:56:20 AM');
Query OK, 1 row affected (0.23 sec)

mysql> insert into DemoTable values('06/22/2019 07:10:11 AM');
Query OK, 1 row affected (0.15 sec)

使用select语句显示表中的所有记录−

mysql> select *from DemoTable;

阅读更多：MySQL 教程

输出

将产生以下输出−

+------------------------+
| timestamp              |
+------------------------+
| 06/22/2019 01:10:20 PM |
| 06/22/2019 12:00:27 PM |
| 06/22/2019 06:56:20 AM |
| 06/22/2019 07:10:11 AM |
+------------------------+
4 rows in set (0.00 sec)

下面是在MySQL中按时间戳排序的查询语句−

mysql> select *from DemoTable ORDER BY STR_TO_DATE(`timestamp`,'%m/%d/%Y%h:%i:%s %p');

输出

将产生以下输出−

+------------------------+
| timestamp              |
+------------------------+
| 06/22/2019 06:56:20 AM |
| 06/22/2019 07:10:11 AM |
| 06/22/2019 12:00:27 PM |
| 06/22/2019 01:10:20 PM |
+------------------------+
4 rows in set (0.00 sec)