如果DB 2在20到30之间使用单个索引范围扫描，则会错过该文档，并返回不完全的查询结果。

If DB2 used a single index range scan from 20 to 30, it would miss this document and return an incomplete query result.

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索引搜索的数目。索引搜索用于启动范围扫描和单个索引记录提取以及在索引中改变位置。

Number of index searches. Index searches are used to start range scans, single index record fetches, and to reposition within an index.

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索引搜索用于启动范围扫描和单个索引记录提取以及在索引中改变位置。

Index searches are used to start range scans, single index record fetches, and to reposition within an index.

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