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Posted by Lolidie Jeena Zubiri
Lolidie Jeena Zubiri
13,238 Points

mySQL Grouping, Joining and Cleaning Challenge 3 of 3

Help! I don't know why my code is not working.

Here's the challenge: Group by "movie_id" on reviews, select average "score" as "average", filter out averages over 2 and do an outer join on the movies table. Bring back the movie "title" first then the average. Clean up the average and set it to 0 if null.

What's wrong in my answer? SELECT title, IFNULL(AVG(score) . 0) as average FROM movies LEFT OUTER JOIN reviews ON movies.id = reviews.movie_id GROUP BY movie_id HAVING average < 2;

Richard Crawford-Wilson
Richard Crawford-Wilson
6,094 Points

IFNULL(AVG(score) . 0), that period is supposed to be a comma

Lolidie Jeena Zubiri
Lolidie Jeena Zubiri
13,238 Points

Thank you Richard. ^_^

Samantha Ferrer
Samantha Ferrer
7,809 Points
Samantha Ferrer
Samantha Ferrer
7,809 Points

Hello! I did write the same code as before, but it's not working. I refreshed the browser and did again the previews two challenges but I'm stuck in this stage, some help?

1 Answer

Lolidie Jeena Zubiri
Lolidie Jeena Zubiri
13,238 Points

Thanks Andrew Chalkley! Can't wait for the next Stages in mySQL ^_^