Reporting with SQL syntax error?

In the library database there's a patrons table with the columns id, first_name, last_name, address, email, library_id, and zip_code.

The library is generating new library cards that will display the full name and their library ID. The full name needs to have the last name in all caps. Create a report with two columns of results, one is an alias of full_name the second being the library_id. My Code: SELECT first_name || " " || Upper(last_name) AS "full name", library_id FROM patrons;

I get "Bummer: Expected results to look like "Andrew CHALKLEY", "MCL1001" not "Andrew CHALKLEY", "MCL1001".

Is there a different way to write this someone can see that I should be doing? If it returns the desired input it should be correct in my point of view, but open to suggestions.

This was resolved. I was missing an underscore from "full name", should be "full_name"