CREATE TABLE rating (rid DECIMAL, mid DECIMAL, stars DECIMAL, ratingdate TIME)
CREATE TABLE movie (mid DECIMAL, title TEXT, year DECIMAL, director TEXT)
CREATE TABLE reviewer (rid DECIMAL, name TEXT)

For each director, what is the title and score of their most poorly rated movie?
SELECT T2.title, T1.stars, T2.director, MIN(T1.stars) FROM rating AS T1 JOIN movie AS T2 ON T1.mid = T2.mid GROUP BY T2.director
SELECT "T2"."title", "T1"."stars", "T2"."director", MIN("T1"."stars") FROM "rating" AS "T1" JOIN "movie" AS "T2" ON "T1"."mid" = "T2"."mid" GROUP BY "T2"."director"