Task: Text to Code
Input (English): SQL: SELECT T1.name FROM Reviewer AS T1 JOIN Rating AS T2 ON T1.rID = T2.rID WHERE T2.stars = "null"
Feedback: In step 2 Find name whose rating stars are valued null for particular date .
Output (English): SELECT DISTINCT name FROM Reviewer AS T1 JOIN Rating AS T2 ON T1.rID  =  T2.rID WHERE ratingDate  =  "null"