With this feature, the query optimizer can immediately consider the index when determining an access plan.
有了这个特性,查询优化器可以在决定访问计划时立即考虑索引。
The steps below illustrate how to work with the Query Drill-Down feature.
下面的步骤说明如何使用查询钻取特性。
This feature can improve query performance on tables with composite indexes.
该特性可以提高具有复合索引的表的查询性能。
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