Syntax:
MONTH(date)

Returns the month for date, in the range 1 to 12 for January to
December, or 0 for dates such as '0000-00-00' or '2008-00-00' that have
a zero month part. Returns NULL if date is NULL.

URL: https://dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html

