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Databases

Anthony Kanellis
Anthony Kanellis
5,150 Points
Posted by Anthony Kanellis
Anthony Kanellis
5,150 Points

unique genre count

Challenge says it didn't perform the correct count? My code: SELECT DISTINCT genre, COUNT(*) AS "total_genres" FROM books GROUP BY genre;

1 Answer

Leandro Botella Penalva
Leandro Botella Penalva
17,618 Points
Leandro Botella Penalva
Leandro Botella Penalva
17,618 Points

Hi Anthony,

In your SQL you are counting repeated genres. To count unique genres you must use DISTINCT inside the COUNT function as well like this example:

SELECT COUNT(DISTINCT column_name)
FROM table_name;