MySQL LAST_DAY() Function

In MySQL, the LAST_DAY() function returns the last day of the month for the specified date or datetime.

`LAST_DAY()` Syntax

Here is the syntax of MySQL LAST_DAY() function:

LAST_DAY(date)

Parameters

date: Required. A date or datetime expression.

Return value

The MySQL LAST_DAY() function returns the last day of the month for the specified date or datetime.

If the argument is an invalid date or NULL, the LAST_DAY() function will return NULL.

`LAST_DAY()` Examples

Here are some examples of the LAST_DAY() function.

SELECT
    LAST_DAY('2019-02-01'),
    LAST_DAY('2020-02-01'),
    LAST_DAY('2021-02-01'),
    LAST_DAY('2022-02-01'),
    LAST_DAY('2022-02-01 10:11:12')\G

         LAST_DAY('2019-02-01'): 2019-02-28
         LAST_DAY('2020-02-01'): 2020-02-29
         LAST_DAY('2021-02-01'): 2021-02-28
         LAST_DAY('2022-02-01'): 2022-02-28
LAST_DAY('2022-02-01 10:11:12'): 2022-02-28

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