What is the station name for the id's 1 and  2 ?
select name, id from station where id = 1 or id = 2
What are the ids of station that have latitude above 37.4 and never had bike availability below 7 ?
select id from station where lat > 37.4 except select station_id from status group by station_id having min ( bikes_available ) < 7
Tell me the installation date for the station id 4 ?
select installation_date from station where id = 4