@Shawn Here is a small example on how to find out what's the percentage of NOT NULL value of column maker:   select ((tot_cnt - a.null_maker)/tot_cnt)*100 as pcnt_not_null_maker from (select count(maker) as null_maker from used_cars where maker is NULL) a Left outer join (select count(*) as tot_cnt from used_cars) b   You may try this for all individual columns. ... View more