Method, system, and program for optimizing database query execution
    2.
    发明授权
    Method, system, and program for optimizing database query execution 有权
    用于优化数据库查询执行的方法,系统和程序

    公开(公告)号:US07146365B2

    公开(公告)日:2006-12-05

    申请号:US10353138

    申请日:2003-01-27

    IPC分类号: G06F17/30

    摘要: Disclosed is a method, system, and program for database query execution. A range of data pages is assigned to each of multiple parallel tasks. For each of the multiple parallel tasks, the range of data pages is mapped to one or more physical partitions, and a data partitioned secondary index partition associated with each of the one or more physical partitions is identified. Each of the multiple parallel tasks is executed to process the database query against the assigned range of data pages using the one or more data partitioned secondary index partitions.

    摘要翻译: 公开了一种用于数据库查询执行的方法,系统和程序。 为多个并行任务分配一系列数据页。 对于多个并行任务中的每一个,将数据页面的范围映射到一个或多个物理分区,并且识别与一个或多个物理分区中的每一个相关联的数据分区次级索引分区。 执行多个并行任务中的每一个以使用一个或多个数据分区的次级索引分区来处理针对分配的数据页面范围的数据库查询。