Query and Exadata Support for Hybrid Columnar Compressed Data
    1.
    发明申请
    Query and Exadata Support for Hybrid Columnar Compressed Data 有权
    查询和Exadata支持混合柱状压缩数据

    公开(公告)号:US20120054225A1

    公开(公告)日:2012-03-01

    申请号:US12871824

    申请日:2010-08-30

    IPC分类号: G06F17/30

    摘要: A method and apparatus is provided for optimizing queries received by a database system that relies on an intelligent data storage server to manage storage for the database system. Storing compression units in hybrid columnar format, the storage manager evaluates simple predicates and only returns data blocks containing rows that satisfy those predicates. The returned data blocks are not necessarily stored persistently on disk. That is, the storage manager is not limited to returning disc block images. The hybrid columnar format enables optimizations that provide better performance when processing typical database workloads including both fetching rows by identifier and performing table scans.

    摘要翻译: 提供了一种方法和装置,用于优化由数据库系统接收的依赖于智能数据存储服务器来管理数据库系统的存储的查询。 以混合列格式存储压缩单元,存储管理器将评估简单谓词,并仅返回包含满足这些谓词的行的数据块。 返回的数据块不一定存储在磁盘上。 也就是说,存储管理器不限于返回盘块图像。 混合柱状格式可以实现在处理典型数据库工作负载时提供更好性能的优化,包括通过标识符提取行和执行表扫描。

    Query and exadata support for hybrid columnar compressed data
    2.
    发明授权
    Query and exadata support for hybrid columnar compressed data 有权
    查询和exadata支持混合柱状压缩数据

    公开(公告)号:US08832142B2

    公开(公告)日:2014-09-09

    申请号:US12871824

    申请日:2010-08-30

    IPC分类号: G06F17/30

    摘要: A method and apparatus is provided for optimizing queries received by a database system that relies on an intelligent data storage server to manage storage for the database system. Storing compression units in hybrid columnar format, the storage manager evaluates simple predicates and only returns data blocks containing rows that satisfy those predicates. The returned data blocks are not necessarily stored persistently on disk. That is, the storage manager is not limited to returning disc block images. The hybrid columnar format enables optimizations that provide better performance when processing typical database workloads including both fetching rows by identifier and performing table scans.

    摘要翻译: 提供了一种方法和装置,用于优化由数据库系统接收的依赖于智能数据存储服务器来管理数据库系统的存储的查询。 以混合列格式存储压缩单元,存储管理器将评估简单谓词,并仅返回包含满足这些谓词的行的数据块。 返回的数据块不一定存储在磁盘上。 也就是说,存储管理器不限于返回盘块图像。 混合柱状格式可以实现在处理典型数据库工作负载时提供更好性能的优化,包括通过标识符提取行和执行表扫描。