CREATE TABLE basketball_match (Team_ID INT, School_ID INT, Team_Name TEXT, ACC_Regular_Season TEXT, ACC_Percent TEXT, ACC_Home TEXT, ACC_Road TEXT, All_Games TEXT, All_Games_Percent INT, All_Home TEXT, All_Road TEXT, All_Neutral TEXT)
CREATE TABLE university (School_ID INT, School TEXT, Location TEXT, Founded FLOAT, Affiliation TEXT, Enrollment FLOAT, Nickname TEXT, Primary_conference TEXT)

Draw a bar chart of affiliation versus sum enrollment, and I want to display y axis from low to high order please.
SELECT Affiliation, SUM(Enrollment) FROM university GROUP BY Affiliation ORDER BY SUM(Enrollment)
SELECT "Affiliation", SUM("Enrollment") FROM "university" GROUP BY "Affiliation" ORDER BY SUM("Enrollment") NULLS FIRST