CREATE TABLE artist (artist_id DECIMAL, name TEXT, country TEXT, year_join DECIMAL, age DECIMAL)
CREATE TABLE exhibition (exhibition_id DECIMAL, year DECIMAL, theme TEXT, artist_id DECIMAL, ticket_price DECIMAL)
CREATE TABLE exhibition_record (exhibition_id DECIMAL, date TEXT, attendance DECIMAL)

What is the name of the artist who joined latest?
SELECT name FROM artist ORDER BY year_join DESC LIMIT 1
SELECT "name" FROM "artist" ORDER BY "year_join" DESC NULLS LAST LIMIT 1