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Matthew Floyd
7,413 PointsChallenge Grouping, Joining and Cleaning Up
I feel like I'm over looking something easy, or am I just grasping at straws with this code?
Group all reviews by "movie_id" and get the average "score" and alias it as "average".
SELECT AVG(score) AS average GROUP BY movie_id
3 Answers
Dave McFarland
Treehouse Teacheryou need to specify the table too:
SELECT AVG(score) AS average FROM reviews GROUP BY movie_id;
Gabi Udrescu
11,539 Pointswell... the copy paste did work for the first line, I managed to get through the second line, but the 3rd one seems impossible:
I'm trying to figure it out with the following command:
SELECT movies.title, IFNULL(AVG(reviews.score),0) AS average FROM reviews left OUTER JOIN movies on movies.id = reviews.movie_id GROUP BY movie_id having average < 2
but I bump into this error: Bummer! There's something wrong with your query.
I'm stuck with this. Can someone give me a hint on this one, please?
ryanjones6
13,797 PointsGood code examples here: https://teamtreehouse.com/community/code-challenge-3-2
Gabi Udrescu
11,539 PointsGabi Udrescu
11,539 PointsI must admit, I used the embarrassing method of copy pasting this solution, because the question is very ambiguous. I believe you should rewrite confusing questions as they probably frustrate everybody, even though they are a valuable lesson before engaging in solving real world problems.