Sql Syntax Error OSC

Hello, I'm using Oscommerce 2.2 and our server provider updated the MySQL version and now I'm getting SQL syntax error from these these lines: I really don't idea what is the problem, if anyone can help that would great :) $inventory_query = "SELECT products_stock_id, products_id, products_stock_quantity , products_stock_reorder , products_stock_code FROM products_inventory WHERE products_id = ".$products_id." AND products_stock_code = ".$products_options['inventory_code']." group by products_stock_code order by products_stock_id asc";