DROP TABLE IF EXISTS public.station_status_history; CREATE TABLE IF NOT EXISTS public.station_status_history ( station_id INT ,num_bikes_available INT ,is_installed BOOLEAN ,is_returning BOOLEAN ,is_renting BOOLEAN ,last_reported TIMESTAMP ,load_partition VARCHAR(10) ,PRIMARY KEY(station_id, last_reported) ) DISTKEY(station_id) SORTKEY(last_reported); DROP TABLE IF EXISTS public.station_review_sentiment; CREATE TABLE IF NOT EXISTS public.station_review_sentiment ( station_id INT ,user_id VARCHAR(64) ,review VARCHAR(255) ,sentiment VARCHAR(16) ,sentiment_mixed FLOAT ,sentiment_neutral FLOAT ,sentiment_positive FLOAT ,sentiment_negative FLOAT ,create_date TIMESTAMP ,load_partition VARCHAR(10) ,PRIMARY KEY(station_id, user_id, create_date) ) DISTKEY(station_id) SORTKEY(create_date); DROP TABLE IF EXISTS public.station_detail; CREATE TABLE IF NOT EXISTS public.station_detail ( station_id INT ,station_name VARCHAR(128) ,capacity INT ,lon FLOAT ,lat FLOAT ,last_updated TIMESTAMP ,PRIMARY KEY(station_id) )