Issue 1: The impact of DPSI structure on sorts.
问题1:dpsi结构对排序的影响。
The impact of a data-partitioned secondary index (DPSI) structure on ORDER BY sort avoidance.
一个分区数据二级索引(data - partitioned secondary index, DPSI)结构对ORDER BY排序规避的影响。
Figure 1 shows an example of two indexes: one a DPSI and the other an NPSI on the column ZIPCODE.
图1显示了两个索引的一个示例:一个是DPSI,另一个是NPSI,在列z IPCODE上。
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