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Databases Reporting with SQL Aggregate and Numeric Functions Counting Groups

Posted by Zach Johnston
Zach Johnston
2,500 Points

I'm not sure how this isn't pulling the correct count. SELECT COUNT(genre) AS genre_count FROM books GROUP BY genre

I've tested the same thing with different values in the playground, and it is pulling back information as I expect this to return

1 Answer

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points

According to the instructions the first column you are to select is genre: Include the genre column first and the genre_count as the second column of information

You will also want to use COUNT(*) to include null values in your count. COUNT(genre) only counts non null values for genre. See this video @ 2:19