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Databases Reporting with SQL Working with Text Getting the Length of a String

Takyi Akwah
PLUS
Takyi Akwah
Courses Plus Student 1,049 Points
Posted by Takyi Akwah
Takyi Akwah
Courses Plus Student 1,049 Points

Help with Length function

Somebody please show me where I am going wrong.

In the library database there's a books table with the columns id, title, author, genre and first_published.

Find the book with the longest title. Show the title and then the length. Alias the result of the length calculation to be longest_length. Only retrieve the longest book.

Type in your command below, then press Ctrl-Enter.

Bummer: There's something wrong with your SQL statement. Please review your code and try again.

SELECT title, LENGTH(title) AS longest_length FROM books ORDER BY Length DESC LIMIT 1;

2 Answers

Joosep Ress
Joosep Ress
3,098 Points
Joosep Ress
Joosep Ress
3,098 Points

You don't need to order by 'longest_length' just order by "Length".

SELECT title, LENGTH(title) as longest_length FROM books order by longest_length desc limit 1;

Joel Jose
Joel Jose
5,643 Points
Joel Jose
Joel Jose
5,643 Points

You can avoid the order by clause and limit by just keeping it simple:

select title, max(length(title)) as longest_length from books