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
For each station, find its latitude and the minimum duration of trips that ended at the station.
assistant
SELECT T1.name , T1.lat , min(T2.duration) FROM station AS T1 JOIN trip AS T2 ON T1.id = T2.end_station_id GROUP BY T2.end_station_id
human
What is the average latitude and longitude of the starting points of all trips?
assistant
SELECT avg(T1.lat) , avg(T1.long) FROM station AS T1 JOIN trip AS T2 ON T1.id = T2.start_station_id
human
List all the distinct stations from which a trip of duration below 100 started.
assistant
SELECT DISTINCT start_station_name FROM trip WHERE duration < 100
human
Which start station had the most trips starting from August? Give me the name and id of the station.
assistant
SELECT start_station_name , start_station_id FROM trip WHERE start_date LIKE '8/%' GROUP BY start_station_name ORDER BY COUNT(*) DESC LIMIT 1
human
Find the ids and names of stations from which at least 200 trips started.
assistant
SELECT start_station_id , start_station_name FROM trip GROUP BY start_station_name HAVING COUNT(*) >= 200
human
For each start station id, what is its name, longitude and average duration of trips started there?
assistant
SELECT T1.name , T1.long , avg ( T2.duration ) FROM station AS T1 JOIN trip AS T2 ON T1.id = T2.start_station_id GROUP BY T2.start_station_id ;