CREATE TABLE film (film_id NUMBER, title CLOB, studio CLOB, director CLOB, gross_in_dollar NUMBER)
CREATE TABLE film_market_estimation (estimation_id NUMBER, low_estimate NUMBER, high_estimate NUMBER, film_id NUMBER, type CLOB, market_id NUMBER, year NUMBER)
CREATE TABLE market (market_id NUMBER, country CLOB, number_cities NUMBER)

Return the low and high estimates for all film markets.
SELECT low_estimate, high_estimate FROM film_market_estimation
SELECT "low_estimate", "high_estimate" FROM "film_market_estimation"