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Posted by Chris Grazioli
Chris Grazioli
31,225 Points

Database Foundations Numeric and Aggregate Functions Code Challenge Task 2 of 3

I'm having trouble with the Numeric and Aggregate Functions code challenge, particularly task 2 of 3 where it ask you to:

In the "reviews" table, with columns "score" and "movie_id", return the minimum score for the movie with the id of 2. Alias the minimum score as "min_score".

SELECT MIN(score) AS min_score, movie_id FROM reviews WHERE movie_id = 2;

This sql statement keeps yielding an error and I could use a fresh pair of eyes.

This is what it return: Bummer! There's something wrong with your query, alias the MIN(score) AS min_score and SELECT from the 'reviews' table for 'movie_id' 2.

Eric Levy
Eric Levy
14,652 Points

You're returning more information than they're asking for. Review what columns you're selecting.

Chris Grazioli
Chris Grazioli
31,225 Points

Well I only have two columns (the columns they specifically asked for) in the SELECT statement. One of which is being aliased. Are they not asking for movie_id? what am I missing?

3 Answers

Chris Grazioli
Chris Grazioli
31,225 Points

Well I only have two columns (the columns they specifically asked for) in the SELECT statement. One of which is being aliased. Are they not asking for movie_id? what am I missing?

Sam Donald
Sam Donald
36,305 Points
Sam Donald
Sam Donald
36,305 Points

Their asking you to use the movie_id column as a reference point for selecting which results to include from the score column. So the only time you should be using movie_id is with the WHERE clause.

Eric Levy
Eric Levy
14,652 Points
Eric Levy
Eric Levy
14,652 Points

Short of giving you the answer, you're selecting more columns than they're asking for. They don't want a result set with two columns. They only ask for you to "return the minimum score". That's it.