Some pre-processing may also be associated with the data prefetch.
可以将一些预处理与数据预取相关联。
When DB2 does not have an index in the appropriate order for sort avoidance or when DB2 USES any index the LIST PREFETCH way, then an order BY will most certainly cause a data sort.
如果DB 2没有一个适当次序的索引可以避免排序，或者当DB 2以LIST PREFETCH方法使用任何索引时，那么一个ORDER BY必定会引起数据排序。
The Workers can be used to prefetch data or perform other ahead-of-time operations to provide a much more lively UI.
这些Workers可用于预取数据或执行其他预先操作，从而提供一个更加实时的UI。
应用推荐