How to use the INTERVAL keyword with the MySQL NOW() and CURDATE() functions?

The INTERVAL keyword works similarly to the NOW() and CURDATE() MySQL functions in that 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)

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