MySQL 查询从月份范围内获取记录?
mysqlmysqli database更新于 2023/11/5 20:06:00
首先我们创建一个表 −
mysql> create table DemoTable1795 ( Name varchar(20), DueDate date ); Query OK, 0 rows affected (0.00 sec)
使用 insert 命令在表中插入一些记录 −
mysql> insert into DemoTable1795 values('John','2018-07-21');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1795 values('Sam','2019-10-21');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1795 values('Sam','2019-01-10');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1795 values('Mike','2018-12-31');
Query OK, 1 row affected (0.00 sec)
使用 select 语句显示表中的所有记录 −
mysql> select * from DemoTable1795;
这将产生以下输出 −
+------+------------+ | Name | DueDate | +------+------------+ | John | 2018-07-21 | | Sam | 2019-10-21 | | Sam | 2019-01-10 | | Mike | 2018-12-31 | +------+------------+ 4 rows in set (0.00 sec)
以下查询用于获取一系列月份的记录 −
mysql> select * from DemoTable1795 where (YEAR(DueDate) = YEAR(DATE_SUB(CURDATE(), INTERVAL 1 YEAR)) AND MONTH(DueDate) BETWEEN 7 AND 12) OR (YEAR(DueDate) = YEAR(CURRENT_DATE()) AND MONTH(DueDate) BETWEEN 1 AND 7);
这将产生以下输出 −
+------+------------+ | Name | DueDate | +------+------------+ | John | 2018-07-21 | | Sam | 2019-01-10 | | Mike | 2018-12-31 | +------+------------+ 3 rows in set (0.00 sec)
