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Philip Rurka8,633 Points
A question with SQL involving one of the code challenges.
Hello. The question I am faced with is this:
In the library database there's a books table. There are id, title, author, genre and first_published columns. Count all the books in each genre. Include the genre column first and the genre_count as the second column of information.
My answer is this :
SELECT genre, COUNT(genre) AS genre_count FROM books GROUP BY genre;
I am getting an error saying "Your query didn't perform the correct count." I can't figure out what is wrong.
Your answer should be counting the number of rows returned for each genre. Your query should read:
SELECT GENRE, COUNT(*) AS genre_count FROM BOOKS GROUP BY GENRE;
Select genre, count(genre) as [genre_count] From books Group by genre;
Jonathan GrieveTreehouse Moderator 90,705 Points
SELECT COUNT(genre) AS genre_count FROM books GROUP BY genre;
Try removing the genre column, since you're retrieving the column via your COUNT() function. :-)