Error: Unknown column 'ptcg.gl_code' in 'field list'<br />Error No: 1054<br /> SELECT p.product_id, p.model, pd.name AS name ,p.price AS price , ptcg.gl_code AS gl_code FROM product AS p INNER JOIN product_description AS pd ON pd.product_id=p.product_id  ORDER BY p.model  LIMIT 100