MySQL DAY() Function

The MySQL DAY() function returns the day portion of a given date or datetime value. It can be between 1 to 31.

The DAY() function is a synonym for the DAYOFMONTH() function.

Syntax

DAY(datetime)

Parameters

Return Value

Returns the day part of a given date or datetime value.

Example 1:

The example below shows the usage of DAY() function.

mysql> SELECT DAY('2018-08-18');
Result: 18

mysql> SELECT DAY('2018-08-18 10:38:42');
Result: 18

mysql> SELECT DAY('2018-08-18 10:38:42.000004');
Result: 18

mysql> SELECT DAY('2014-10-25');
Result: 25

mysql> SELECT DAY(CURDATE());
Result: 28

Example 2:

Consider a database table called Orders with the following records:

The statement given below can be used to get the day portion of records of column OrderTime:

SELECT *, DAY(OrderTime) AS DAY_Value FROM Orders;

This will produce the result as shown below: