如何更新 MySQL 表的时间戳字段?
mysqlmysqli database
首先我们创建一个表 −
mysql> create table DemoTable -> ( -> PunchOut timestamp, -> PunchStatus tinyint(1) -> ); Query OK, 0 rows affected (0.51 sec)
使用 insert 命令在表中插入一些记录 −
mysql> insert into DemoTable values('2019-01-31 6:30:10',1); Query OK, 1 row affected (0.22 sec) mysql> insert into DemoTable values('2019-02-06 4:10:13',0); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('2018-12-16 03:00:30',0); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('2016-11-25 02:10:00',1); Query OK, 1 row affected (0.22 sec)
使用 select 语句显示表中的所有记录 −
mysql> select *from DemoTable;
输出
+---------------------+-------------+ | PunchOut | PunchStatus | +---------------------+-------------+ | 2019-01-31 06:30:10 | 1 | | 2019-02-06 04:10:13 | 0 | | 2018-12-16 03:00:30 | 0 | | 2016-11-25 02:10:00 | 1 | +---------------------+-------------+ 4 rows in set (0.00 sec)
以下是更新 MySQL 表的时间戳字段的查询。我们已将当前日期设置为 PunchStatus 0 − 的字段
注意 − 当前日期和时间是 2019-06-30 13:43:45
mysql> update DemoTable set PunchOut=now() where PunchStatus=0; Query OK, 2 rows affected (0.19 sec) Rows matched: 2 Changed: 2 Warnings: 0
让我们再次检查表记录 −
mysql> select *from DemoTable;
输出
+---------------------+-------------+ | PunchOut | PunchStatus | +---------------------+-------------+ | 2019-01-31 06:30:10 | 1 | | 2019-06-30 13:43:45 | 0 | | 2019-06-30 13:43:45 | 0 | | 2016-11-25 02:10:00 | 1 | +---------------------+-------------+ 4 rows in set (0.00 sec)
