Method, system, and program for query optimization with algebraic rules
US7240078B2 · kind B2 · utility
14Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2003 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Apr 22, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99954
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A query is matched to an outlier materialized query table that stores exception data. The query is searched for a source predicate. An outlier predicate in the outlier materialized query table that corresponds to the source predicate is searched for a target column that corresponds to a source column in the source predicate. A new range predicate is derived based on the target column and introduced into the query, wherein the query is executed to retrieve data from one or more data stores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.