Unknown column 'p.billing' in 'where clause'
QUERY: SELECT p.productId, p.distributor, c.ordering, p.price, p.discountPrice, p.discountType, p.discountPercent, p.discountStart, p.discountEnd, p.currency, p.noprice, p.brand, p.descriptionShort, p.sku, p.collectorProduct, p.properties FROM stihl_products AS p LEFT JOIN stihl_product_categories AS c ON p.productId = c.productId WHERE p.published = "1" AND c.categoryId = "1" AND p.billing = "0" GROUP BY p.productId