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General Discussion

Damian Sieczkowski
Damian Sieczkowski
9,730 Points
Posted by Damian Sieczkowski
Damian Sieczkowski
9,730 Points

grouping-joining-and-cleaning-up challenge task 1

I can't seem to make task 1 of this challenge pass - http://teamtreehouse.com/library/grouping-joining-and-cleaning-up.

The question...

Group all reviews by "movie_id" and get the average "score" and alias it as "average".

My answer...

SELECT movie_id, AVG(score) AS average FROM reviews GROUP BY movie_id;

http://screencast.com/t/qA1TwOyqfYZ

Response

Bummer! There's something wrong with your query.

movie_id    average
2   0.30732E1
3   0.38333E1
4   0.27E1
5   0.36154E1
6   0.15E1
8   0.29167E1

http://screencast.com/t/l2bdZ5pYos

3 Answers

Matej Lukášik
Matej Lukášik
27,440 Points
Matej Lukášik
Matej Lukášik
27,440 Points

Hi there, here is the answer that worked for me:

SELECT AVG(score) AS average FROM reviews GROUP BY movie_id;
Damian Sieczkowski
Damian Sieczkowski
9,730 Points
Damian Sieczkowski
Damian Sieczkowski
9,730 Points

Nice - thanks! I thought i needed to select the movie_id as well as the score for some reason.

Matt Keck
Matt Keck
1,231 Points
Matt Keck
Matt Keck
1,231 Points

Thanks I was doing the same thing!