Hello there!  How are you?  Could you please provide me with a list of all trip IDs for the zip code 94002?
select id from trip where zip_code = 94002
Great! Can you tell me which bike id has the most trips within the area with the zipcode 94002?
select bike_id from trip where zip_code = 94002 group by bike_id order by count ( * ) desc limit 1
Excellent!  Can you tell me what the total number of trips is, within zip code 94002, for bike 252?
select count ( * ) from trip where zip_code = 94002 and bike_id = '252'