Error: SELECT Make,HMakeCode FROM MakeRef WHERE Sitename='wipermotors.net' Group By Make Order By Make

Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'qapminis_sites.MakeRef.HMakeCode' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by