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Databases Reporting with SQL Aggregate and Numeric Functions Counting Results

Posted by Rhea Khanna
Rhea Khanna
2,838 Points

Count function

In the library database, how many books are with the genre of "Science Fiction"? Alias the result as scifi_book_count. The books table has the columns id, title, author, genre and first_published.

my answer:

SELECT COUNT(genre = "Science Fiction") AS "scifi_book_count" FROM books;

1 Answer

Brendan Whiting
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Brendan Whiting
Front End Web Development Techdegree Graduate 84,738 Points
Brendan Whiting
.a{fill-rule:evenodd;}techdegree seal-36
Brendan Whiting
Front End Web Development Techdegree Graduate 84,738 Points

We can't put the "= Science Fiction" inside the count function, it has to go in a WHERE clause.

SELECT COUNT(genre) as scifi_book_count FROM books WHERE genre = "Science Fiction";
Rhea Khanna
Rhea Khanna
2,838 Points

I get it now thank you, this has helped me answer a lot more and understand the syntax language better