How can I use INTERVAL keyword with MySQL NOW() and CURDATE() functions?

INTERVAL keyword with NOW() and CURDATE() MySQL functions can be used in similar fashion as it can be used with time, date or datetime units of a date value.

Example

Using INTERVAL with MySQL NOW()

mysql> Select NOW() + INTERVAL 2 day;
+------------------------+
| NOW() + INTERVAL 2 day |
+------------------------+
| 2017-10-30 09:19:31    |
+------------------------+
1 row in set (0.00 sec)

mysql> Select NOW() - INTERVAL 2 day;
+------------------------+
| NOW() - INTERVAL 2 day |
+------------------------+
| 2017-10-26 09:19:45    |
+------------------------+
1 row in set (0.00 sec)

mysql> Select NOW() - INTERVAL 2 hour;
+-------------------------+
| NOW() - INTERVAL 2 hour |
+-------------------------+
| 2017-10-28 07:19:51     |
+-------------------------+
1 row in set (0.00 sec)

Example

Using INTERVAL with MySQL CURDATE()

mysql> Select CURDATE() - INTERVAL 2 day;
+----------------------------+
| CURDATE() - INTERVAL 2 day |
+----------------------------+
| 2017-10-26                 |
+----------------------------+
1 row in set (0.00 sec)

mysql> Select CURDATE() + INTERVAL 2 day;
+----------------------------+
| CURDATE() + INTERVAL 2 day |
+----------------------------+
| 2017-10-30                 |
+----------------------------+
1 row in set (0.00 sec)