要找到差异,请使用DATEDIFF()
方法。让我们首先创建一个表-
mysql> create table DemoTable1446 -> ( -> DueDate date -> );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable1446 values('2019-01-21'); mysql> insert into DemoTable1446 values('2019-02-01'); mysql> insert into DemoTable1446 values('2019-09-30');
使用select语句显示表中的所有记录-
mysql> select * from DemoTable1446;
这将产生以下输出-
+------------+ | DueDate | +------------+ | 2019-01-21 | | 2019-02-01 | | 2019-09-30 | +------------+ 3 rows in set (0.10 sec)
当前日期如下-
mysql> select curdate(); +------------+ | curdate() | +------------+ | 2019-10-01 | +------------+ 1 row in set (0.12 sec)
以下是查询获取表中当前日期和日期记录之间的差异-
mysql> select datediff(curdate(),DueDate) from DemoTable1446;
这将产生以下输出-
+-----------------------------+ | datediff(curdate(),DueDate) | +-----------------------------+ | 253 | | 242 | | 1 | +-----------------------------+ 3 rows in set (0.00 sec)