发明授权
- 专利标题: Method for evaluating a conjunction of equity and range predicates using a constant number of operations
- 专利标题(中): 使用恒定数量的操作来评估权益和范围谓词的连接的方法
-
申请号: US12056999申请日: 2008-03-27
-
公开(公告)号: US07840554B2公开(公告)日: 2010-11-23
- 发明人: F Ryan Johnson , Vijayshankar Raman , Garret Frederick Swart
- 申请人: F Ryan Johnson , Vijayshankar Raman , Garret Frederick Swart
- 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
- 代理机构: IP Authority, LLC
- 代理商 Ramraj Soundararajan; Brian Lambert
- 主分类号: G06F7/00
- IPC分类号: G06F7/00
摘要:
Methods are described to simultaneously apply conjugates of equality, range, and in-list predicates. A first set of methods are described for the simultaneous application of equality predicates. A second set of methods are described for the simultaneous application of a mixture of range and equality predicates. A third method is described for the simultaneous applying a mixture of in-list predicates. The described methods allow for quick evaluation of complex predicates as they efficiently implement the computation done per record, while maintaining the same execution time irrespective of the number of fields.
公开/授权文献
信息查询