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Databases Reporting with SQL Aggregate and Numeric Functions Practice Session

Freddie Kuhle
Freddie Kuhle
8,036 Points
Posted by Freddie Kuhle
Freddie Kuhle
8,036 Points

SQL - How can I add a column from one table to my results from another table?

I'm working on the 3rd question in the SQL Playground - Stage 3 Practice questions after this video and need a bit of help: https://teamtreehouse.com/library/reporting-with-sql/aggregate-and-numeric-functions/practice-session

Is it possible for me to SELECT the 'title' column from the 'movies' table, and show it alongside the columns I SELECT from the 'reviews' table?

I'm looking to SELECT the 'title' column (from the 'movies' table), the 'movie_id' column ('reviews' table) and the average 'rating' column ('reviews' table).

The 'movie_id' column in the 'reviews' table matches with the 'id' column in the 'movies' table.

Thanks in advance!

1 Answer

Freddie Kuhle
Freddie Kuhle
8,036 Points
Freddie Kuhle
Freddie Kuhle
8,036 Points

Solved it! With thanks to this page: https://stackoverflow.com/questions/20585010/sql-getting-a-column-from-another-table-to-join-this-query

For anyone that has the same problem in the future, here is the code I used:

SELECT movies.title AS title, reviews.movie_id AS movie_id, ROUND(AVG(reviews.rating), 1) AS average_rating FROM reviews JOIN movies ON movies.id = reviews.movie_id GROUP BY title;