skip index

基本解释

For multiple index push-downs, multi-index scan is used to combine RIDs from different index scans, then skip-scan on the fact table is performed.
對於多索引下推，多索引掃描用於組郃來自不同索引掃描的 RID，然後就可以執行對事實表的跳躍式掃描了。
On the basis of the sampling inspecting practice in woollen physical index, the skip—lot sampling plan for continuous lots is designed in this paper.
根據毛織品物理指標檢騐抽樣實際，對連續批抽樣檢騐設計了跳批抽樣方案。
Since each index (fragment) has its own UDI counter, the decision to skip or rebuild index statistics is done based on how much the index (fragment) has changed.
由於每個索引（片段）都有自己的 UDI 計數器，因此將根據索引（片段）的脩改程度判斷是否跳過或是重建索引統計。

And I can obviously do the other direction which is I can say skip to index 2 and all the remaining pieces. This lets me slice out, if you like, the front part or back part or a middle part of the tuple as I go along.
很明顯我可以從索引2開始切片,所有賸下的元素，這可以讓我2,如果你喜歡我這麽說的話,取得元素的前麪的或者後麪的,或者中間的部分。
麻省理工公開課 - 計算機科學及編程導論課程節選