MySQL server has gone away SQL query : select categoryID, name, brief_description,  customers_rating, Price, in_stock,  customer_votes, list_price,  pt.productID, default_picture, sort_order, items_sold, enabled,  product_code, description, shipping_freight, po.option_value from SS_products AS pt LEFT JOIN SS_product_options_values AS po ON pt.productID=po.productID and po.optionID=36 where  enabled=1 AND categoryID=9823 OR  enabled=1 AND categoryID=9138 OR  enabled=1 AND categoryID=8619 OR  enabled=1 AND categoryID=6465 OR  enabled=1 AND categoryID=6466 OR  enabled=1 AND categoryID=9960 OR  enabled=1 AND categoryID=7223 OR  enabled=1 AND categoryID=6467 OR  enabled=1 AND categoryID=6468 OR  enabled=1 AND categoryID=8757 OR  enabled=1 AND categoryID=6469 OR  enabled=1 AND categoryID=6470 OR  enabled=1 AND categoryID=6471 OR  enabled=1 AND categoryID=7370 OR  enabled=1 AND categoryID=6472 OR  enabled=1 AND categoryID=6473 OR  enabled=1 AND categoryID=8881 OR  enabled=1 AND categoryID=9517 OR  enabled=1 AND categoryID=9623 OR  enabled=1 AND categoryID=9740 OR  enabled=1 AND categoryID=6464 OR  enabled=1 AND categoryID=6463 order by  in_stock DESC, Price, name