human
Schema:
Services (Service_ID, Service_Type_Code)
Participants (Participant_ID, Participant_Type_Code, Participant_Details)
Events (Event_ID, Service_ID, Event_Details)
Participants_in_Events (Event_ID, Participant_ID)
Please answer with SQL.
assistant
Sure, I understand.
human
How many participants are there?
assistant
SELECT COUNT( * ) FROM participants;
human
How about the total number of events?
assistant
SELECT COUNT( DISTINCT event_id ) FROM participants_in_events;
human
Can you list the events that have participents whose details had the substring 'Dr.'?
assistant
SELECT T2.event_id FROM participants AS T1 JOIN Participants_in_Events AS T2 ON T1.Participant_ID = T2.Participant_ID WHERE T1.participant_details LIKE "%Dr.%" ;