SELECT mID ,  avg(stars) FROM Rating WHERE mID NOT IN (SELECT T1.mID FROM Rating AS T1 JOIN Reviewer AS T2 ON T1.rID  =  T2.rID WHERE T2.name  =  "Brittany Harris") GROUP BY mID
Find the average rating star for each movie that are not reviewed by Brittany Harris.
create table Movie(
	mID int primary key, 
	title text, 
	year int, 
	director text
);
create table Reviewer(
	rID int primary key, 
	name text);
create table Rating(
	rID int, 
	mID int, 
	stars int, 
	ratingDate date,
	FOREIGN KEY (mID) references Movie(mID),
	FOREIGN KEY (rID) references Reviewer(rID)
);
INSERT into Movie values(101, 'Gone with the Wind', 1939, 'Victor Fleming');
INSERT into Reviewer values(201, 'Sarah Martinez');
INSERT into Rating values(201, 101, 2, '2011-01-22');
INSERT INTO Movie VALUES [(101, 'Gone with the Wind', 1939, 'Victor Fleming'), (102, 'Star Wars', 1977, 'George Lucas')]
INSERT INTO Reviewer VALUES [(201, 'Sarah Martinez'), (202, 'Daniel Lewis')]
INSERT INTO Rating VALUES [(201, 101, 2, '2011-01-22'), (201, 101, 4, '2011-01-27')]