What is difference b/w reviewer stars and number of ratings here .Here they asked for null ratings not for null stars as per question


#1

What is difference b/w reviewer stars and number of ratings here .Here they asked for null ratings not for null stars as per question .
Why query expects this-> reviewer_stars is null
Instead of this -> number_of_ratings is null.


#2

Hi Mudit,

In the question they asked for the names of reviewers who rated their ratings with null values.
That means the when someone gives a rating he/she can give rating based on stars, so if someone gives NULL in that field that is the reviewer they want not the one who gave 0(zero) ratings.
Because the number of ratings does not depends on reviewer and its a count starting from 0.