query: SELECT count(DISTINCT participant_id) FROM participants_in_Events
question: What-what all a distinct a participant id them as had attended any event them?
query_toks: SELECT count ( DISTINCT participant_id ) FROM participants_in_Events
query_toks_no_value: select count ( distinct participant_id ) from participants_in_events
question_toks: What-what all a distinct a participant id them as had attended any event them?