CREATE TABLE member (Member_ID CLOB, Name CLOB, Nationality CLOB, Role CLOB)
CREATE TABLE member_attendance (Member_ID NUMBER, Performance_ID NUMBER, Num_of_Pieces NUMBER)
CREATE TABLE performance (Performance_ID FLOAT, Date CLOB, Host CLOB, Location CLOB, Attendance NUMBER)

Bar chart x axis location y axis how many location
SELECT Location, COUNT(Location) FROM performance GROUP BY Location
SELECT "Location", COUNT("Location") FROM "performance" GROUP BY "Location"