Parameter-sensitive plans
US8874547B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2010 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Sep 19, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/24524
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A query configured according to a query template is received. The query includes values for a plurality of parameters. A key is generated for the query that indicates a selectivity region in a selectivity space determined for the included parameter values. Whether the generated key matches any key of a plurality of keys is determined. Each key of the plurality of keys is associated with a corresponding query plan. If the generated key is determined to not match any of the keys, the query is compiled to generate a new query plan, and the generated query plan is executed with respect to the query. If the key is determined to match any key of the plurality of keys, a query plan associated with the matched key is selected, and the query plan associated with the matched key is executed with respect to the query.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.