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)
CREATE TABLE exhibition (Exhibition_ID NUMBER, Year NUMBER, Theme CLOB, Artist_ID NUMBER, Ticket_Price FLOAT)

What is the number of countries in the artist table?, I want to order from high to low by the x-axis.
SELECT Country, COUNT(Country) FROM artist GROUP BY Country ORDER BY Country DESC
SELECT "Country", COUNT("Country") FROM "artist" GROUP BY "Country" ORDER BY "Country" DESC