Find the names of all reviewers who have ratings with a NULL value for the date.
SELECT DISTINCT name FROM Reviewer AS T1 JOIN Rating AS T2 ON T1.rID  =  T2.rID WHERE ratingDate  =  "null"
SELECT DISTINCT name FROM Reviewer AS T1 JOIN Rating AS T2 ON T1.rID  =  T2.rID WHERE ratingDate  =  "null"
[{'Nenhum': 'Nenhum resultado encontrado'}]