Skew-based costing for database queries
US8190598B2 · kind B2 · utility
11Cited by
0References
17Claims
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Key dates
| Filing date | Oct 30, 2008 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Sep 26, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/24532
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
One embodiment is a method that determines skew to predict costs for query plans for a database query. The method selects a query plan that accounts for the skew to evenly distribute processing load among multiple processors and then executes the query with the selected query plan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.