SELECT lname FROM authors ORDER BY lname
Retrieve all the last names of authors in alphabetical order.
[Schema (values) (types)]: | icfp_1 |  Inst : instid (text) , name (number) , country (text) | Authors : authid (text) , lname (number) , fname (text) | Papers : paperid (text) , title (number) | Authorship : authid (text) , instid (number) , paperid (text) , authorder (text);