Properties to sort and filter , rather than using sql queries with " where " and " sort by " clauses that access the database for each select action . web applications 属性进行排序和筛选，而不是使用带“ where ”和“ sort by ”子句的sql查询（对于这些查询，每个选择操作都要访问数据库） ，应用程序会运行得更快。
Rather than selecting a day , a month , a year , an hour , and a minute , they ' ve provided some extremely useful shortcuts to let you select options like “ later today ” or “ in two weeks ” 而不是选择了一条天， 1个月， 1年，一个小时，一分钟，他们已经提供了一些非常有用的捷径，让你选择操作一样， "后，今天"或"在两个星期内" 。
Also , querying and performing other select operations , such as sorts or joins on large records that contain row - overflow data slows processing time , because these records are processed synchronously instead of asynchronously 此外，执行查询和其他选择操作（例如，对包含行溢出数据的大型记录进行排序或合并）将延长处理时间，因为这些记录将同步处理，而不是异步处理。
