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date_sub,subdate

Description​

Subtracts the specified time interval from a date.

Syntax​

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

Parameters​

  • date: It must be a valid DATE or DATETIME expression.
  • expr: the time interval you want to subtract. 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, QUARTER, MONTH, DAY, HOUR, MINUTE, SECOND, MILLISECOND (since 3.1.7), and MICROSECOND (since 3.1.7).

Return value​

Returns a DATETIME value. If the date does not exist, for example, 2020-02-30, or if the date is not a DATE or DATETIME value, NULL is returned.

Examples​

select date_sub('2010-11-30 23:59:59', INTERVAL 2 DAY);
+-------------------------------------------------+
| date_sub('2010-11-30 23:59:59', INTERVAL 2 DAY) |
+-------------------------------------------------+
| 2010-11-28 23:59:59                             |
+-------------------------------------------------+

select date_sub('2010-11-30', INTERVAL 2 hour);
+-----------------------------------------+
| date_sub('2010-11-30', INTERVAL 2 HOUR) |
+-----------------------------------------+
| 2010-11-29 22:00:00                     |
+-----------------------------------------+

select date_sub('2010-02-30', INTERVAL 2 DAY);
+----------------------------------------+
| date_sub('2010-02-30', INTERVAL 2 DAY) |
+----------------------------------------+
| NULL                                   |
+----------------------------------------+

select date_sub('2010-11-30 23:59:59', INTERVAL 2 QUARTER);
+-----------------------------------------------------+
| date_sub('2010-11-30 23:59:59', INTERVAL 2 QUARTER) |
+-----------------------------------------------------+
| 2010-05-30 23:59:59                                 |
+-----------------------------------------------------+

select subdate('2010-11-30 23:59:59', INTERVAL 2 millisecond);
+--------------------------------------------------------+
| subdate('2010-11-30 23:59:59', INTERVAL 2 MILLISECOND) |
+--------------------------------------------------------+
| 2010-11-30 23:59:58.998000                             |
+--------------------------------------------------------+

select date_sub('2010-11-30 23:59:59', INTERVAL 2 microsecond);
+---------------------------------------------------------+
| date_sub('2010-11-30 23:59:59', INTERVAL 2 MICROSECOND) |
+---------------------------------------------------------+
| 2010-11-30 23:59:58.999998                              |
+---------------------------------------------------------+