Method and data processing system for detecting patterns in SQL to allow optimized use of multi-column indexes
US6353821B1 · kind B1 · utility
95Cited by
12References
18Claims
0Family size
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Key dates
| Filing date | Dec 23, 1999 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | Dec 23, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99933
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A database management optimizer detects patterns in SQL that occur when search conditions are present that represent ranges of values across multiple columns of a table. These patterns are recognized and translated into simpler key value ranges that can be used to provide more efficient use of database indexes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.