首页> 外国专利> 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

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

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.
机译:在用于时间序列数据的查询路径生成期间用于动态刷新索引的方法中,接收针对时间序列数据的查询,该查询包括元素。在基于查询的查询计划的生成期间,至少部分地基于查询的元素来确定针对多个执行路径的阶段中的操作,其中,该阶段的执行包括访问多个索引的索引。基于所述索引在减少为所述多个执行路径的所述执行路径的阶段设置的解决方案中设置的潜在有用性,来确定是否刷新所述多个索引的索引。基于索引在减少为多个执行路径的执行路径的阶段设置的解决方案中的潜在效用而选择性地刷新索引。然后执行用于多个执行路径的阶段。

著录项

  • 公开/公告号US2019065540A1

    专利类型

  • 公开/公告日2019-02-28

    原文格式PDF

  • 申请/专利权人 VMWARE INC.;

    申请/专利号US201815952090

  • 发明设计人 CLEMENT PANG;

    申请日2018-04-12

  • 分类号G06F17/30;

  • 国家 US

  • 入库时间 2022-08-21 12:05:19

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