发明申请
US20060259457A1 Apparatus and method for optimizing a computer database query that Fetches n rows
有权
用于优化获取n行的计算机数据库查询的装置和方法
- 专利标题: Apparatus and method for optimizing a computer database query that Fetches n rows
- 专利标题(中): 用于优化获取n行的计算机数据库查询的装置和方法
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申请号: US11128053申请日: 2005-05-12
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公开(公告)号: US20060259457A1公开(公告)日: 2006-11-16
- 发明人: Brian Muras , Robert Nelson , John Santosuosso
- 申请人: Brian Muras , Robert Nelson , John Santosuosso
- 申请人地址: US NY ARMONK
- 专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人地址: US NY ARMONK
- 主分类号: G06F17/30
- IPC分类号: G06F17/30
摘要:
An apparatus and method to optimize a query access plan in a computer database system. In preferred embodiments, the query optimizer determines the query can be optimized and generates for the query an optimized access plan that eliminates records defined by a Where clause and one or more ordering criteria prior to ordering the records (sorting or grouping) and then returning a first n rows.
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