ใช้ DATE_SUB() และ NOW() ไวยากรณ์:
SELECT * FROM yourTableName WHERE yourDateTimeColumnName BETWEEN DATE_SUB(DATE(NOW()), INTERVAL 2 DAY) AND DATE_SUB(DATE(NOW()), INTERVAL 1 DAY);
สร้างตาราง:
mysql> create table get2daysAgoDemo ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Name varchar(20), PostDateTime datetime ); Query OK, 0 rows affected (1.70 sec)
แทรกข้อมูล:
mysql> insert into get2daysAgoDemo(Name,PostDateTime) values('Larry',now()); Query OK, 1 row affected (0.68 sec) mysql> insert into get2daysAgoDemo(Name,PostDateTime) values('Mike','2019-02-13'); Query OK, 1 row affected (0.12 sec) mysql> insert into get2daysAgoDemo(Name,PostDateTime) values('Sam','2019-01-31'); Query OK, 1 row affected (0.15 sec) mysql> insert into get2daysAgoDemo(Name,PostDateTime) values('Bob','2019-02-14'); Query OK, 1 row affected (0.29 sec) mysql> insert into get2daysAgoDemo(Name,PostDateTime) values('David','2019-02-12'); Query OK, 1 row affected (0.21 sec) mysql> insert into get2daysAgoDemo(Name,PostDateTime) values('Carol','2019-02-11'); Query OK, 1 row affected (0.22 sec)แสดงข้อมูล (สมมติวันนี้ 2019-02-15):
mysql> select * from get2daysAgoDemo;
ผลลัพธ์:
+----+-------+---------------------+ | Id | Name | PostDateTime | +----+-------+---------------------+ | 1 | Larry | 2019-02-15 21:47:10 | | 2 | Mike | 2019-02-13 00:00:00 | | 3 | Sam | 2019-01-31 00:00:00 | | 4 | Bob | 2019-02-14 00:00:00 | | 5 | David | 2019-02-12 00:00:00 | | 6 | Carol | 2019-02-11 00:00:00 | +----+-------+---------------------+ 6 rows in set (0.00 sec)
คำสั่งดึงข้อมูล 2 วันที่ผ่านมา (13-14 ก.พ.):
mysql> select * from get2daysAgoDemo where PostDateTime between DATE_SUB(DATE(NOW()), INTERVAL 2 DAY) AND DATE_SUB(DATE(NOW()), INTERVAL 1 DAY);
ผลลัพธ์
+----+------+---------------------+ | Id | Name | PostDateTime | +----+------+---------------------+ | 2 | Mike | 2019-02-13 00:00:00 | | 4 | Bob | 2019-02-14 00:00:00 | +----+------+---------------------+ 2 rows in set (0.01 sec)
