让我们首先创建一个表-
create table DemoTable -> ( -> ArrivalDate datetime -> );
使用insert命令在表中插入一些记录。假设当前日期为2019-07-03-
insert into DemoTable values('2019-07-03'); insert into DemoTable values('2019-06-20'); insert into DemoTable values('2019-06-15'); insert into DemoTable values('2018-06-11'); insert into DemoTable values('2018-06-01');
使用select语句显示表中的所有记录-
select *from DemoTable;
输出结果
这将产生以下输出-
+---------------------+ | ArrivalDate | +---------------------+ | 2019-07-03 00:00:00 | | 2019-06-20 00:00:00 | | 2019-06-15 00:00:00 | | 2018-06-11 00:00:00 | | 2018-06-01 00:00:00 | +---------------------+ 5 rows in set (0.00 sec)
以下是获取时间戳为15天以上的记录的查询-
select *from DemoTable where ArrivalDate < date_sub(now(), interval 15 day) order by ArrivalDate DESC;
输出结果
这将产生以下输出-
+---------------------+ | ArrivalDate | +---------------------+ | 2019-06-15 00:00:00 | | 2018-06-11 00:00:00 | | 2018-06-01 00:00:00 | +---------------------+ 3 rows in set (0.00 sec)