Database system for executing parameter-sensitive query
US9589017B2 · kind B2 · utility
1Cited by
2References
20Claims
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Key dates
| Filing date | Oct 14, 2014 |
| Grant date | Mar 7, 2017 |
| Priority date | — |
| Expiry date | Oct 14, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/24524
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A query is received. The query comprises a plural number of efficiency expressions. A key is generated for the query indicating a first selectivity region in multi-dimensional selectivity space comprising an array of selectivity regions arranged according to a grid with a number of dimensions equal to the plural number. The generated key is used to look up a stored query plan among a plurality of stored query plans. A stored query plan is executed for the query that is associated with a stored key determined to match the generated key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.