MySQL DAY() Function
Definition and Usage
The DAY() function returns the day portion of a date value (a number from 1 to 31).
Note: The DAY() function is a synonym for the DAYOFMONTH() function.
Syntax
  DAY(date)Parameter Values
| Parameter | Description | 
|---|---|
| date | Required. The date or datetime value from which to extract the day | 
Technical Details
| Works in: | MySQL 5.7, MySQL 5.6, MySQL 5.5, MySQL 5.1, MySQL 5.0, MySQL 4.1, MySQL 4.0, MySQL 3.23 | 
|---|

