如何从MySQL列中的所有日期记录中减去秒数？

首先，让我们创建一个表 –

mysql> create table DemoTable833(ArrivalTime datetime);
Query OK, 0 rows affected (0.79 sec)

使用插入命令将一些记录插入表中 –

mysql> insert into DemoTable833 values('2019-01-10 12:40:50');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable833 values('2019-02-16 11:10:30');
Query OK, 1 row affected (0.20 sec)
mysql> insert into DemoTable833 values('2018-03-17 10:00:10');
Query OK, 1 row affected (0.20 sec)

使用select语句从表中显示所有记录 –

mysql> select *from DemoTable833;

将产生以下输出 –

+---------------------+
| ArrivalTime         |
+---------------------+
| 2019-01-10 12:40:50 |
| 2019-02-16 11:10:30 |
| 2018-03-17 10:00:10 |
+---------------------+
3 rows in set (0.00 sec)

以下是从MySQL日期中减去秒的查询 –

mysql> select ArrivalTime-interval 10 SECOND from DemoTable833;

将产生以下输出 –

+--------------------------------+
| ArrivalTime-interval 10 SECOND |
+--------------------------------+
| 2019-01-10 12:40:40            |
| 2019-02-16 11:10:20            |
| 2018-03-17 10:00:00            |
+--------------------------------+
3 rows in set (0.00 sec)

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