CREATE TABLE mountain (Mountain_ID NUMBER, Name CLOB, Height FLOAT, Prominence FLOAT, Range CLOB, Country CLOB)
CREATE TABLE climber (Climber_ID NUMBER, Name CLOB, Country CLOB, Time CLOB, Points FLOAT, Mountain_ID NUMBER)

How many climbers are from each country. Visualize by pie chart.
SELECT Country, COUNT(*) FROM climber GROUP BY Country
SELECT "Country", COUNT(*) FROM "climber" GROUP BY "Country"