SELECT allergytype FROM Allergy_type GROUP BY allergytype ORDER BY count(*) ASC LIMIT 1
Which allergy type is the least common?
SELECT allergytype FROM Allergy_type GROUP BY allergytype ORDER BY count ( * ) ASC LIMIT 1
select allergytype from allergy_type group by allergytype order by count ( * ) asc limit value
Which allergy type is the least common ?