UPDATE `udemy`.`students` SET `s_country` = 'Canada' WHERE (`ID` = '4');

-- # ID, s_name, s_country, s_grade
-- 1, Richard, Canada, 90
-- 2, Steve, Canada, 80
-- 3, Melisa, USA, 60
-- 4, Bill, Canada, 75
-- 6, Larry, , 65