MySQL 查询查找当前日期和时间介于加入日期和卸任日期之间的日期记录
mysqlmysqli database
使用 BETWEEN 查找加入日期和卸任日期之间的日期和时间。NOW() 用于获取当前日期和时间进行比较。
首先我们创建一个表 −
mysql> create table DemoTable771 ( Joiningdate datetime, Relievingdate datetime ); Query OK, 0 rows affected (1.15 sec)
使用 insert 命令在表中插入一些记录 −
mysql> insert into DemoTable771 values('2016-01-21','2016-09-23');
Query OK, 1 row affected (0.27 sec)
mysql> insert into DemoTable771 values('2019-01-21','2019-09-23');
Query OK, 1 row affected (0.16 sec)
mysql> insert into DemoTable771 values('2017-04-01','2018-12-31');
Query OK, 1 row affected (0.20 sec)
mysql> insert into DemoTable771 values('2019-04-01','2019-12-31');
Query OK, 1 row affected (0.25 sec)
使用 select 语句显示表中的所有记录 −
mysql> select *from DemoTable771;
这将产生以下输出 -
+---------------------+---------------------+ | Joiningdate | Relievingdate | +---------------------+---------------------+ | 2016-01-21 00:00:00 | 2016-09-23 00:00:00 | | 2019-01-21 00:00:00 | 2019-09-23 00:00:00 | | 2017-04-01 00:00:00 | 2018-12-31 00:00:00 | | 2019-04-01 00:00:00 | 2019-12-31 00:00:00 | +---------------------+---------------------+ 4 rows in set (0.00 sec)
以下是 MySQL 查询，用于查找当前日期和时间介于 JoiningDate 和 RelievingDate 之间的日期记录 −
mysql> select *from DemoTable771 where NOW() between Joiningdate and Relievingdate;
这将产生以下输出 -
+---------------------+---------------------+ | Joiningdate | Relievingdate | +---------------------+---------------------+ | 2019-01-21 00:00:00 | 2019-09-23 00:00:00 | | 2019-04-01 00:00:00 | 2019-12-31 00:00:00 | +---------------------+---------------------+ 2 rows in set (0.07 sec)
