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months_add

Description​

Adds a specified number of months to the date, accurate to the month.

The add_months function provides similar functionalities.

Syntax​

DATETIME months_add(DATETIME expr1, INT expr2);

Parameters​

  • expr1: the start time. It must be of the DATETIME or DATE type.

  • expr2: the months to add. It must be of the INT type. It can be greater, equal, or less than zero. A negative value subtracts months from date.

Return value​

Returns a DATETIME value.

Examples​

select months_add('2019-08-01 13:21:03', 8);
+--------------------------------------+
| months_add('2019-08-01 13:21:03', 8) |
+--------------------------------------+
| 2020-04-01 13:21:03                  |
+--------------------------------------+

select months_add('2019-08-01', 8);
+-----------------------------+
| months_add('2019-08-01', 8) |
+-----------------------------+
| 2020-04-01 00:00:00         |
+-----------------------------+

select months_add('2019-08-01 13:21:03', -8);
+---------------------------------------+
| months_add('2019-08-01 13:21:03', -8) |
+---------------------------------------+
| 2018-12-01 13:21:03                   |
+---------------------------------------+

select months_add('2019-02-28 13:21:03', 1);
+--------------------------------------+
| months_add('2019-02-28 13:21:03', 1) |
+--------------------------------------+
| 2019-03-28 13:21:03                  |
+--------------------------------------+

select months_add('2019-01-30 13:21:03', 1);
+--------------------------------------+
| months_add('2019-01-30 13:21:03', 1) |
+--------------------------------------+
| 2019-02-28 13:21:03                  |
+--------------------------------------+