CREATE TABLE authors (authid DECIMAL, lname TEXT, fname TEXT)
CREATE TABLE papers (paperid DECIMAL, title TEXT)
CREATE TABLE inst (instid DECIMAL, name TEXT, country TEXT)
CREATE TABLE authorship (authid DECIMAL, instid DECIMAL, paperid DECIMAL, authorder DECIMAL)

Find the first names of all the authors ordered in alphabetical order.
SELECT fname FROM authors ORDER BY fname
SELECT "fname" FROM "authors" ORDER BY "fname" NULLS FIRST