UPDATE users
SET date = DATEADD(MONTH, 1, date)
//Returns Date time
//Takes where to add (as in year, month, day, etc) to
//Takes how much to add
//Takes a datetime in some different formats
DATEADD(month, 1, '2017/08/25')
UPDATE users
SET date = DATE_ADD(date, INTERVAL 1 month )
UPDATE users
SET date = ADD_MONTHS(date, 1)