CREATE TABLE Customers (Customer_ID INT, Customer_Details VARCHAR)
CREATE TABLE Claims (Claim_ID INT, Policy_ID INT, Date_Claim_Made DATE, Date_Claim_Settled DATE, Amount_Claimed INT, Amount_Settled INT)
CREATE TABLE Settlements (Settlement_ID INT, Claim_ID INT, Date_Claim_Made DATE, Date_Claim_Settled DATE, Amount_Claimed INT, Amount_Settled INT, Customer_Policy_ID INT)
CREATE TABLE Customer_Policies (Policy_ID INT, Customer_ID INT, Policy_Type_Code CHAR, Start_Date DATE, End_Date DATE)
CREATE TABLE Payments (Payment_ID INT, Settlement_ID INT, Payment_Method_Code VARCHAR, Date_Payment_Made DATE, Amount_Payment INT)

Bar graph to show the average of amount payment from different payment method code, could you list the average of amount payment from high to low order?
SELECT Payment_Method_Code, AVG(Amount_Payment) FROM Payments GROUP BY Payment_Method_Code ORDER BY AVG(Amount_Payment) DESC
SELECT "Payment_Method_Code", AVG("Amount_Payment") FROM "Payments" GROUP BY "Payment_Method_Code" ORDER BY AVG("Amount_Payment") DESC NULLS LAST