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
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
Which trip started from the station with the largest dock count? Give me the trip id.
assistant
SELECT T1.id FROM trip AS T1 JOIN station AS T2 ON T1.start_station_id = T2.id ORDER BY T2.dock_count DESC LIMIT 1
human
What are the names of stations that are located in Palo Alto city but have never been the ending point of trips more than 100 times?
assistant
SELECT name FROM station WHERE city = 'Palo Alto' EXCEPT SELECT end_station_name FROM trip GROUP BY end_station_name HAVING count(*) > 100
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 trips did not end in San Francisco?
assistant
SELECT COUNT( * ) FROM trip AS T1 JOIN station AS T2 ON T1.end_station_id = T2.id WHERE T2.city != "San Francisco" ;