สร้างตารางมีคอลัมน์ datetime:
mysql> create table Add6Hour ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, ArrivalTime datetime ); Query OK, 0 rows affected (0.56 sec)
แทรกข้อมูล:
mysql> insert into Add6Hour(ArrivalTime) values(now()); Query OK, 1 row affected (0.12 sec)
แสดงข้อมูล:
mysql> select * from Add6Hour;
ผลลัพธ์:
+----+---------------------+ | Id | ArrivalTime | +----+---------------------+ | 1 | 2019-02-14 18:35:24 | +----+---------------------+ 1 row in set (0.00 sec)
บวก 6 ชั่วโมงด้วย INTERVAL (ไม่ใช้ DATE_ADD):
mysql> select Id, ArrivalTime, (ArrivalTime + INTERVAL 6 HOUR) AS AfterAdding6HourINNOW from Add6Hour;
ผลลัพธ์
+----+---------------------+-----------------------+ | Id | ArrivalTime | AfterAdding6HourINNOW | +----+---------------------+-----------------------+ | 1 | 2019-02-14 18:35:24 | 2019-02-15 00:35:24 | +----+---------------------+-----------------------+ 1 row in set (0.00 sec)
