SELECT T1.event_id, T1.event_details FROM EVENTS AS T1 JOIN Participants_in_Events AS T2 ON T1.Event_ID = T2.Event_ID GROUP BY T1.Event_ID HAVING COUNT(*) > 1
Apa saja ID dan detail acara yang memiliki lebih dari satu peserta?
CREATE TABLE EVENTS (event_id VARCHAR, event_details VARCHAR, Event_ID VARCHAR); CREATE TABLE Participants_in_Events (Event_ID VARCHAR)