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date_sub

Description

Subtracts the specified time interval from a date.

Syntax

DATETIME DATE_SUB(DATETIME date,INTERVAL expr type)

Parameters

  • date: It must be a valid date expression.
  • expr: the time interval you want to subtract.
  • type: 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, or if the date is not a 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('2010-02-30', INTERVAL 2 DAY);
+----------------------------------------+
| date_sub('2010-02-30', INTERVAL 2 DAY) |
+----------------------------------------+
| NULL                                   |
+----------------------------------------+