CREATE TABLE Documents (Document_ID NUMBER, Document_Type_Code CHAR, Project_ID NUMBER, Document_Date DATETIME, Document_Name VARCHAR2, Document_Description VARCHAR2, Other_Details VARCHAR2)
CREATE TABLE Statements (Statement_ID NUMBER, Statement_Details VARCHAR2)
CREATE TABLE Projects (Project_ID NUMBER, Project_Details VARCHAR2)
CREATE TABLE Ref_Budget_Codes (Budget_Type_Code CHAR, Budget_Type_Description VARCHAR2)
CREATE TABLE Accounts (Account_ID NUMBER, Statement_ID NUMBER, Account_Details VARCHAR2)
CREATE TABLE Ref_Document_Types (Document_Type_Code CHAR, Document_Type_Name VARCHAR2, Document_Type_Description VARCHAR2)
CREATE TABLE Documents_with_Expenses (Document_ID NUMBER, Budget_Type_Code CHAR, Document_Details VARCHAR2)

How many document type for different document type description? Visualize with a bar chart, display Document_Type_Description from high to low order.
SELECT Document_Type_Description, COUNT(Document_Type_Description) FROM Ref_Document_Types GROUP BY Document_Type_Description ORDER BY Document_Type_Description DESC
SELECT "Document_Type_Description", COUNT("Document_Type_Description") FROM "Ref_Document_Types" GROUP BY "Document_Type_Description" ORDER BY "Document_Type_Description" DESC