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Databases

Posted by Noel Thurau
Noel Thurau
1,021 Points

SQL Count and Distinct task 2 of 2

I'm having trouble with this one https://teamtreehouse.com/library/reporting-with-sql/aggregate-and-numeric-functions/counting-results-2

I'm putting in this answer but I know I'm getting an error message because of the author's name.

SELECT COUNT(DISTINCT author) WHERE author = "J.K. Rowling" AS jk_book_count FROM books;

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

The instructions say, "In the library database, how many books are with the author of "J.K. Rowling"?"

I see two issues with this query:

  • the task is a simple row count (of books), so you won't need "DISTINCT" or the "author" column
  • the WHERE clause should come last in the query
Noel Thurau
Noel Thurau
1,021 Points

Got it now, thanks!!!