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Method for accelerating range queries using periodic monotonic properties of non-monotonic functions
Method for accelerating range queries using periodic monotonic properties of non-monotonic functions
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机译:利用非单调函数的周期性单调性质来加速范围查询的方法
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摘要
A method for accelerating range queries using periodic monotonic properties of non-monotonic functions including mapping a base column x to an existing index on a column y that is correlated with column x through a periodic piecewise monotonic function F(x), rewriting an index construction statement to force the existing index on column y to track a periodic piecewise monotonic property by assigning identical values of F(x) to different periods to different ranges to create an annotated index, and rewriting range queries over the annotated index on F(x) by modifying a derived predicate.
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