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Databases Reporting with SQL Aggregate and Numeric Functions Counting Groups

Posted by Naoya Yuda
Naoya Yuda
6,185 Points

Count Function

In the library database, how many books are with the author of "J.K. Rowling"? Alias the result as jk_book_count. The books table has the columns id, title, author, genre and first_published.

My Answer select count(*) as jk_book_count from books where author = "J.K.Rowling";

Bummer: Your query didn't perform the correct count.

Could you please tell me what is wrong with my answer?

2 Answers

Naoya Yuda
Naoya Yuda
6,185 Points
Naoya Yuda
Naoya Yuda
6,185 Points

Thank you! The no space was the issue as you pointed out.

Steven Parker
Steven Parker
229,644 Points
Steven Parker
Steven Parker
229,644 Points

Naoya Yuda — Glad to help. You can mark the question solved by choosing a "best answer".
And happy coding!

Steven Parker
Steven Parker
229,644 Points
Steven Parker
Steven Parker
229,644 Points

The "view challenge" button in the upper right seems to link to a totally different challenge!

But the issue with your query is that you have "J.K.Rowling" (with no space) instead of "J.K. Rowling".