Between Sac State Union and Sac State American River Courtyard, which location sold the most Dog n Suds root beer?
Between Sac State Union and Sac State American River Courtyard refers to LocationName IN('Sac State American River Courtyard', 'Sac State Union'); Dog n Suds refers to BrandName = 'Dog n Suds'; sold the most root beer refers to MAX(COUNT(BrandID));
SELECT T3.LocationName FROM rootbeer AS T1 INNER JOIN rootbeerbrand AS T2 ON T1.BrandID = T2.BrandID INNER JOIN location AS T3 ON T1.LocationID = T3.LocationID WHERE T2.BrandName = 'Dog n Suds' AND T3.LocationName IN ('Sac State American River Courtyard', 'Sac State Union') GROUP BY T1.LocationID ORDER BY COUNT(T1.BrandID) DESC LIMIT 1