WEEKOFYEAR()
WEEKOFYEAR(date)This function returns the calendar week of the year for a given date. It was added in version 4.1.1 of MySQL and is synonymous with WEEK(), but with the mode of 3 for that function only. There’s no way to change the mode for this function. Here is an example:
SELECT CURDATE( ) AS Date, WEEKOFYEAR(CURDATE( )) AS Week; +------------+------+ | Date | Week | +------------+------+ | 2005-01-11 | 2 | +------------+------+