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Databases

MANOJ MANN
MANOJ MANN
1,793 Points
Posted by MANOJ MANN
MANOJ MANN
1,793 Points

How to use group by to get no. of record in two columns

how to Count all the books in each genre. Include the genre column first and the genre_count as the second column of information?

My code is: SELECT genre, count(genre) AS genre_count FROM books GROUP BY genre

1 Answer

Stuart Wright
Stuart Wright
41,119 Points
Stuart Wright
Stuart Wright
41,119 Points

Try using count(*) instead of count(genre).

It looks like the only difference in the result set is that your query doesn't count the row that is missing a genre, whereas count(*) does. I don't really think your solution is wrong given the instructions, but the challenge only seems to accept what I've suggested.