Table schema:
CREATE TABLE status (id VARCHAR, station_id VARCHAR, city VARCHAR, bikes_available INTEGER); CREATE TABLE station (id VARCHAR, station_id VARCHAR, city VARCHAR, bikes_available INTEGER)

Question: What are the ids of stations that are located in San Francisco and have average bike availability above 10.
SQL: SELECT id FROM station WHERE city = "San Francisco" INTERSECT SELECT station_id FROM status GROUP BY station_id HAVING AVG(bikes_available) > 10