CREATE TABLE actor (Actor_ID NUMBER, Name CLOB, Musical_ID NUMBER, Character CLOB, Duration CLOB, age NUMBER)
CREATE TABLE musical (Musical_ID NUMBER, Name CLOB, Year NUMBER, Award CLOB, Category CLOB, Nominee CLOB, Result CLOB)

Bar chart x axis duration y axis how many duration
SELECT Duration, COUNT(Duration) FROM actor GROUP BY Duration
SELECT "Duration", COUNT("Duration") FROM "actor" GROUP BY "Duration"