query: SELECT T2.title ,  T1.stars ,  T2.director ,  max(T1.stars) FROM Rating AS T1 JOIN Movie AS T2 ON T1.mID  =  T2.mID WHERE director != "null" GROUP BY director
question: For each director, what are the titles and ratings for all the movies they review?
query_toks: SELECT T2.title , T1.stars , T2.director , max ( T1.stars ) FROM Rating AS T1 JOIN Movie AS T2 ON T1.mID = T2.mID WHERE director ! = `` null '' GROUP BY director
query_toks_no_value: select t2 . title , t1 . stars , t2 . director , max ( t1 . stars ) from rating as t1 join movie as t2 on t1 . mid = t2 . mid where director ! = value group by director
question_toks: For each director, what are the titles and ratings for all the movies they review?