从表中选择日期在90天以前到现在之间的行，现在在MySQL中
为此使用MySQLINTERVAL。让我们首先创建一个表-
mysql> create table DemoTable ( DueDate date );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable values('2019-07-10');
mysql> insert into DemoTable values('2019-09-02');
mysql> insert into DemoTable values('2019-06-01');
mysql> insert into DemoTable values('2019-05-10');
mysql> insert into DemoTable values('2019-08-21');使用select语句显示表中的所有记录-
mysql> select *from DemoTable;
这将产生以下输出-
+------------+ | DueDate | +------------+ | 2019-07-10 | | 2019-09-02 | | 2019-06-01 | | 2019-05-10 | | 2019-08-21 | +------------+ 5 rows in set (0.00 sec)
以下是从表中选择日期介于-90天以前和现在之间的行的查询-
mysql> select *from DemoTable where DueDate between now() - interval 90 day and now();
这将产生以下输出-
+------------+ | DueDate | +------------+ | 2019-07-10 | | 2019-08-21 | +------------+ 2 rows in set (0.00 sec)