CREATE TABLE host (Host_ID INT, Name TEXT, Nationality TEXT, Age TEXT)
CREATE TABLE party_host (Party_ID INT, Host_ID INT, Is_Main_in_Charge BOOLEAN)
CREATE TABLE party (Party_ID INT, Party_Theme TEXT, Location TEXT, First_year TEXT, Last_year TEXT, Number_of_hosts INT)

Show different nationalities along with the number of hosts of each nationality in a bar chart, and display y-axis in desc order.
SELECT Nationality, COUNT(*) FROM host GROUP BY Nationality ORDER BY COUNT(*) DESC
SELECT "Nationality", COUNT(*) FROM "host" GROUP BY "Nationality" ORDER BY COUNT(*) DESC NULLS LAST