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Databases Reporting with SQL Aggregate and Numeric Functions Practice Session

Sean Flanagan
Sean Flanagan
33,235 Points
Posted by Sean Flanagan
Sean Flanagan
33,235 Points

Challenge 3 - Movie Average Rating

Hi. I'm having a problem with this challenge.

"-- Calculate the average rating for each movie and round it to one decimal place"

Here's my attempt:

SELECT ROUND(0, 1) AVG(rating) FROM reviews;

Output:

Error: near "(": syntax error

I would appreciate any feedback please.

2 Answers

Sean Flanagan
Sean Flanagan
33,235 Points
Sean Flanagan
Sean Flanagan
33,235 Points

That worked. Thanks Dale. I've given your solution an up vote and Best Answer.

Philip Schultz
Philip Schultz
11,437 Points
Philip Schultz
Philip Schultz
11,437 Points

I don't this would get you the average rating for each movie, right? Wouldn't this make more sense?

SELECT movie_id, ROUND(AVG(rating), 1) FROM reviews GROUP BY movie_id;
christian mbouwen
christian mbouwen
1,180 Points

Hey Dale, by any chance would you know why I am getting "error title does not exist" when I do.

SELECT title, ROUND(AVG(rating), 1) AS average FROM reviews GROUP BY title;

?