human
Schema:
station (id, name, lat, long, dock_count, city, installation_date)
status (station_id, bikes_available, docks_available, time)
trip (id, duration, start_date, start_station_name, start_station_id, end_date, end_station_name, end_station_id, bike_id, subscription_type, zip_code)
weather (date, max_temperature_f, mean_temperature_f, min_temperature_f, max_dew_point_f, mean_dew_point_f, min_dew_point_f, max_humidity, mean_humidity, min_humidity, max_sea_level_pressure_inches, mean_sea_level_pressure_inches, min_sea_level_pressure_inches, max_visibility_miles, mean_visibility_miles, min_visibility_miles, max_wind_Speed_mph, mean_wind_speed_mph, max_gust_speed_mph, precipitation_inches, cloud_cover, events, wind_dir_degrees, zip_code)
Please answer with SQL.
assistant
Sure, I understand.
human
What is the average longitude of stations that never had bike availability more than 10?
assistant
SELECT avg(long) FROM station WHERE id NOT IN (SELECT station_id FROM status GROUP BY station_id HAVING max(bikes_available) > 10)
human
What is the average latitude and longitude of stations located in San Jose city?
assistant
SELECT avg(lat) , avg(long) FROM station WHERE city = 'San Jose'
human
What are names of stations that have average bike availability above 10 and are not located in San Jose city?
assistant
SELECT T1.name FROM station AS T1 JOIN status AS T2 ON T1.id = T2.station_id GROUP BY T2.station_id HAVING avg(bikes_available) > 10 EXCEPT SELECT name FROM station WHERE city = 'San Jose'
human
What is the number of distinct cities the stations are located at?
assistant
SELECT count(DISTINCT city) FROM station
human
How many trips started from Mountain View city and ended at Palo Alto city?
assistant
SELECT count(*) FROM station AS T1 JOIN trip AS T2 JOIN station AS T3 JOIN trip AS T4 ON T1.id = T2.start_station_id AND T2.id = T4.id AND T3.id = T4.end_station_id WHERE T1.city = 'Mountain View' AND T3.city = 'Palo Alto'
human
How many stations does Mountain View city has?
assistant
SELECT COUNT( * ) FROM station WHERE city = "Mountain View" ;