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Databases Reporting with SQL Aggregate and Numeric Functions Summing Values

Shahrukh Siddiqui
Shahrukh Siddiqui
2,698 Points
Posted by Shahrukh Siddiqui
Shahrukh Siddiqui
2,698 Points

UNABLE TO WRITE THE QUERY

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 the id of 6. Movie ids are found in the movie_id column in the reviews table. Write a query that totals up all ratings for the movie "Starman" in the reviews table. Alias it as starman_total_ratings.

1 Answer

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,972 Points
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,972 Points

It's kind of confusing because there is an id column and the challenge refers to "movie has the id" when it would have been more clear to state movie_id. The syntax you will want to use is:

SELECT SUM(column_name) as alias
FROM table_name
WHERE condition;

The where condition is WHERE movie_id = 6. Give the rest a try.