MySQL 选择 30 天范围内的日期?
mysqlmysqli database
要选择 30 天范围内的日期，您可以使用算术运算 - 带间隔。
语法如下 −
select *from yourTableName where yourDateColumnName > NOW() - INTERVAL 30 DAY and yourDateColumnName < NOW() + INTERVAL 30 DAY;
为了理解上述语法，让我们创建一个表。创建表的查询如下 −
mysql> create table selectDatesDemo -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> ArrivalDate datetime -> ); Query OK, 0 rows affected (0.77 sec)
现在，您可以使用 insert 命令在表中插入一些记录。查询如下 −
mysql> insert into selectDatesDemo(ArrivalDate) values('2019-01-10');
Query OK, 1 row affected (0.12 sec)
mysql> insert into selectDatesDemo(ArrivalDate) values('2019-01-29');
Query OK, 1 row affected (0.21 sec)
mysql> insert into selectDatesDemo(ArrivalDate) values('2019-02-13');
Query OK, 1 row affected (0.14 sec)
mysql> insert into selectDatesDemo(ArrivalDate) values('2019-02-19');
Query OK, 1 row affected (0.14 sec)
mysql> insert into selectDatesDemo(ArrivalDate) values('2018-02-13');
Query OK, 1 row affected (0.17 sec)
mysql> insert into selectDatesDemo(ArrivalDate) values('2018-03-13');
Query OK, 1 row affected (0.19 sec)
使用 select 语句显示表中的所有记录。查询如下 −
mysql> select *from selectDatesDemo;
这是输出 −
+----+---------------------+ | Id | ArrivalDate | +----+---------------------+ | 1 | 2019-01-10 00:00:00 | | 2 | 2019-01-29 00:00:00 | | 3 | 2019-02-13 00:00:00 | | 4 | 2019-02-19 00:00:00 | | 5 | 2018-02-13 00:00:00 | | 6 | 2018-03-13 00:00:00 | +----+---------------------+ 6 rows in set (0.00 sec)
以下是选择 30 天范围内日期的查询 −
mysql> select *from selectDatesDemo -> where ArrivalDate > NOW() - INTERVAL 30 DAY -> and ArrivalDate < NOW() + INTERVAL 30 DAY;
以下是输出 −
+----+---------------------+ | Id | ArrivalDate | +----+---------------------+ | 3 | 2019-02-13 00:00:00 | | 4 | 2019-02-19 00:00:00 | +----+---------------------+ 2 rows in set (0.04 sec)
