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Databases

Erick Amezcua
Erick Amezcua
21,826 Points
Posted by Erick Amezcua
Erick Amezcua
21,826 Points

Problem with SQL AVG code challenge

We're in a movie database. There's a reviews table with the columns of id, movie_id, username, review and rating. The movie "Starman" has an id of 6. Movie ids are stored in the movie_id column. Calculate the average rating for "Starman". Alias the average as average_rating.

My query:

SELECT AVG(rating) averange_rating FROM reviews WHERE movie_id = 6;

Another possible query:

SELECT AVG(rating) averange_rating FROM reviews GROUP BY movie_id = 6 HAVING movie_id = 6;

I really don't see a problem with both queries, both return the actual correct average, but the playground still telling me it's not the expected value.

1 Answer

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

You nearly had it the first time, but you gave the column an alias name of "averange_rating" (with an extra "n") instead of "average_rating".

Erick Amezcua
Erick Amezcua
21,826 Points
Erick Amezcua
Erick Amezcua
21,826 Points

Yes, it's true, I'm surprised that it was because in other code challenge Treehouse warns me when the problem is the alias, but in this case, it marked that the problem was directly the calculation. Thank you very much.