Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE Staff ( staff_id INTEGER, gender VARCHAR(1), first_name VARCHAR(80), last_name VARCHAR(80), email_address VARCHAR(255), phone_number VARCHAR(80) )
TABLE: CREATE TABLE Customers ( customer_id INTEGER, customer_type_code VARCHAR(20), address_line_1 VARCHAR(80), address_line_2 VARCHAR(80), town_city VARCHAR(80), state VARCHAR(80), email_address VARCHAR(255), phone_number VARCHAR(80) )
TABLE: CREATE TABLE Products ( product_id INTEGER, parent_product_id INTEGER, product_category_code VARCHAR(20), date_product_first_available DATETIME, date_product_discontinued DATETIME, product_name VARCHAR(80), product_description VARCHAR(255), product_price DECIMAL(19,4) )
TABLE: CREATE TABLE Complaints ( complaint_id INTEGER, product_id INTEGER, customer_id INTEGER, complaint_outcome_code VARCHAR(20), complaint_status_code VARCHAR(20), complaint_type_code VARCHAR(20), date_complaint_raised DATETIME, date_complaint_closed DATETIME, staff_id INTEGER )

### Question ###
Bar graph to show the average of product price from different product category code, and I want to display by the Y-axis in ascending.

### Accurate SQL ###

SELECT product_category_code, AVG(product_price) FROM Products GROUP BY product_category_code ORDER BY AVG(product_price)