Fetch products which has difference in fixed mop and showing price

SELECT fk_products.product_code as "Product Code",fk_product_descriptions.product AS "Name",fk_product_prices.price AS "Showing Price",fk_products.fixed_mop AS "MOP" FROM fk_products
left join fk_product_descriptions ON fk_products.product_id = fk_product_descriptions.product_id
left join fk_product_prices ON fk_products.product_id = fk_product_prices.product_id
where fk_product_prices.price != fk_products.fixed_mop;