human
Schema:
swimmer (ID, name, Nationality, meter_100, meter_200, meter_300, meter_400, meter_500, meter_600, meter_700, Time)
stadium (ID, name, Capacity, City, Country, Opening_year)
event (ID, Name, Stadium_ID, Year)
record (ID, Result, Swimmer_ID, Event_ID)
Please answer with SQL.
assistant
Sure, I understand.
human
Find the names of stadiums that the least swimmers have been to?
assistant
SELECT t3.name FROM record AS t1 JOIN event AS t2 ON t1.event_id = t2.id JOIN stadium AS t3 ON t3.id = t2.stadium_id GROUP BY t2.stadium_id ORDER BY COUNT( * ) DESC LIMIT 1;
human
How many events in this table?
assistant
SELECT COUNT( name ) FROM event ;