并不推荐您手动创建一个索引，因为历史表格会频繁更新，而索引可能会损害更新的性能。
Manually creating an index is not recommended because the history table is frequently updated and the index could hurt update performance.
另外，谷歌文档/电子表格工具的更新实时度也将更及时 。
The real news, though, is that Google Docs and Spreadsheets is getting more realtime.
Flex应用程序还提供一个用于更新数据表格的表单。
The Flex application also provides a form to update the data grid.
应用推荐