CREATE TABLE Dogs (breed_code VARCHAR(255)); CREATE TABLE Breeds (breed_name VARCHAR(255), breed_code VARCHAR(255))
What is the name of the breed with the most dogs?
    
SQL: SELECT T1.breed_name FROM Breeds AS T1 JOIN Dogs AS T2 ON T1.breed_code = T2.breed_code GROUP BY T1.breed_name ORDER BY COUNT(*) DESC LIMIT 1