Invalid query:
 SELECT IF(CatItems.Sale = 0, CatCategories.Sale, CatItems.Sale) AS Sale, CatItems.__id,
		CatItems.smallImage, CatItems.AddTime, CatItems.Active, CatItems.Name, CatItems.isNew, CatItems.Action, CatItems.Code,
		CatItems.Price, CatItems.Price2,CatItems.Price3,CatItems.Price4, CatItems.Price6, CatItems.Brand, CatItems.Remains
		FROM CatItems LEFT JOIN CatCategories ON CatItems.Category = CatCategories.__id
		WHERE CatItems.Code IN ('','672330','672394','672335','672317','672319','672336','672318','') and CatCategories.__id <> '4837' and CatCategories.__id <> '5063' and CatItems.Active = '1' AND CatItems.isDomainMarket='0'
		ORDER BY field(CatItems.Code, '','672330','672394','672335','672317','672319','672336','672318','')

MySQL server has gone away