如何检查日期是否已经过MySQL？
让我们首先创建一个表-
mysql> create table DemoTable1340 -> ( -> Deadline date -> );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable1340 values('2019-09-18');
mysql> insert into DemoTable1340 values('2019-09-23');
mysql> insert into DemoTable1340 values('2018-12-24');
mysql> insert into DemoTable1340 values('2016-11-01');
mysql> insert into DemoTable1340 values('2019-09-28');使用select语句显示表中的所有记录-
mysql> select * from DemoTable1340;
这将产生以下输出-
+------------+ | Deadline | +------------+ | 2019-09-18 | | 2019-09-23 | | 2018-12-24 | | 2016-11-01 | | 2019-09-28 | +------------+ 5 rows in set (0.00 sec)
我们也应该知道当前日期。当前日期如下-
mysql> select curdate(); +------------+ | curdate() | +------------+ | 2019-09-21 | +------------+ 1 row in set (0.00 sec)
这是检查日期是否已过的查询-
mysql> select * from DemoTable1340 where Deadline >= curdate();
这将产生以下输出-
+------------+ | Deadline | +------------+ | 2019-09-23 | | 2019-09-28 | +------------+ 2 rows in set (0.00 sec)