adddate,days_add

Description

Adds a specified time interval to a date.

Syntax

DATETIME ADDDATE(DATETIME|DATE date,INTERVAL expr type)

Parameters

  • date: It must be a valid date or datetime expression.
  • expr: the time interval you want to add. It must be of the INT type.
  • type: the unit of the time interval. It can only be set to any of the following values: YEAR, MONTH, DAY, HOUR, MINUTE, SECOND.

Return value

Returns a DATETIME value. If the date does not exist, for example, 2020-02-30, NULL is returned. If the date is a DATE value, it will be converted into a DATETIME value.

Examples

select adddate('2010-11-30 23:59:59', INTERVAL 2 DAY);
+-------------------------------------------------+
| adddate('2010-11-30 23:59:59', INTERVAL 2 DAY) |
+-------------------------------------------------+
| 2010-12-02 23:59:59                             |
+-------------------------------------------------+

select adddate('2010-12-03', INTERVAL 2 DAY);
+----------------------------------------+
| adddate('2010-12-03', INTERVAL 2 DAY) |
+----------------------------------------+
| 2010-12-05 00:00:00                    |
+----------------------------------------+
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