Error Query [SELECT * FROM checkcom , computer , statustool , tool_category , tool ,room WHERE checkcom.computer_id = computer.computer_id AND checkcom.tool_id = tool.tool_id AND checkcom.tool_category_id = tool_category.tool_category_id AND checkcom.statustool_id = statustool.statustool_id AND checkcom.room_id = room.room_id AND checkcom.user_id = ORDER BY checkcom.checkcom_date desc;]