CREATE TABLE news_report (journalist_ID NUMBER, Event_ID NUMBER, Work_Type CLOB)
CREATE TABLE journalist (journalist_ID NUMBER, Name CLOB, Nationality CLOB, Age CLOB, Years_working NUMBER)
CREATE TABLE event (Event_ID NUMBER, Date CLOB, Venue CLOB, Name CLOB, Event_Attendance NUMBER)

Visualize a bar chart for what are the nationalities and their average ages of journalists?, show in asc by the total number please.
SELECT Nationality, AVG(Age) FROM journalist GROUP BY Nationality ORDER BY AVG(Age)
SELECT "Nationality", AVG("Age") FROM "journalist" GROUP BY "Nationality" ORDER BY AVG("Age")