Which business had the most number of high risk violations? Give the name of the business.
the most number of high risk violations refers to MAX(COUNT(business_id)) where risk_category = 'High';
SELECT T2.name FROM violations AS T1 INNER JOIN businesses AS T2 ON T1.business_id = T2.business_id WHERE T1.risk_category = 'High Risk' GROUP BY T2.name ORDER BY COUNT(T2.name) DESC LIMIT 1