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METHOD AND SYSTEM FOR DYNAMIC REFRESH OF AN INDEX DURING PATH ANALYSIS OF QUERY PLAN GENERATION FOR TIME SERIES DATA
METHOD AND SYSTEM FOR DYNAMIC REFRESH OF AN INDEX DURING PATH ANALYSIS OF QUERY PLAN GENERATION FOR TIME SERIES DATA
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机译:时间序列数据查询计划生成路径分析中索引动态刷新的方法和系统
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摘要
In a method for dynamic refresh of an index during query path generation for time series data, a query for time series data is received, the query including elements. During generation of a query plan based on the query, operations in a stage for a plurality of paths of execution are determined based at least in part on the elements of the query, wherein execution of the stage comprises accessing an index of a plurality of indices. It is determined whether to refresh indices of a plurality of indices based on a potential usefulness of the indices in reducing a solution set for the stage of a path of execution of the plurality of paths of execution. The indices are selectively refreshed based on the potential usefulness of the indices in reducing a solution set for the stage of a path of execution of the plurality of paths of execution. The stage for the plurality of paths of execution is then executed.
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