CREATE TABLE exhibition (Exhibition_ID NUMBER, Year NUMBER, Theme CLOB, Artist_ID NUMBER, Ticket_Price FLOAT)
CREATE TABLE artist (Artist_ID NUMBER, Name CLOB, Country CLOB, Year_Join NUMBER, Age NUMBER)
CREATE TABLE exhibition_record (Exhibition_ID NUMBER, Date CLOB, Attendance NUMBER)

Show me how many year by year in a histogram
SELECT Year, COUNT(Year) FROM exhibition GROUP BY Year
SELECT "Year", COUNT("Year") FROM "exhibition" GROUP BY "Year"