CREATE TABLE review (a_id DECIMAL, u_id DECIMAL, i_id DECIMAL, rating DECIMAL, rank DECIMAL)
CREATE TABLE item (i_id DECIMAL, title TEXT)
CREATE TABLE trust (source_u_id DECIMAL, target_u_id DECIMAL, trust DECIMAL)
CREATE TABLE useracct (u_id DECIMAL, name TEXT)

List the titles of all items in alphabetic order .
SELECT title FROM item ORDER BY title
SELECT "title" FROM "item" ORDER BY "title" NULLS FIRST