在MySQL中获取特定年份的开始和结束日期
为此，请使用MySQLYEAR()函数。让我们首先创建一个表-
mysql> create table DemoTable1843
(
StartDate date,
EndDate date
);使用插入命令在表中插入一些记录-
mysql> insert into DemoTable1843 values('2019-01-21','2019-10-12');
mysql> insert into DemoTable1843 values('2018-10-12','2018-12-31');
mysql> insert into DemoTable1843 values('2016-04-01','2017-05-02');使用select语句显示表中的所有记录-
mysql> select * from DemoTable1843;
这将产生以下输出-
+------------+------------+ | StartDate | EndDate | +------------+------------+ | 2019-01-21 | 2019-10-12 | | 2018-10-12 | 2018-12-31 | | 2016-04-01 | 2017-05-02 | +------------+------------+ 3 rows in set (0.00 sec)
这是从选定年份获取开始日期和结束日期的查询-
mysql> select * from DemoTable1843
where year(StartDate)='2018'
or
year(EndDate)='2018';这将产生以下输出-
+------------+------------+ | StartDate | EndDate | +------------+------------+ | 2018-10-12 | 2018-12-31 | +------------+------------+ 1 row in set (0.00 sec)