Partial group by for eager group by placement query plans
US11704317B2 · kind B2 · utility
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6References
18Claims
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Key dates
| Filing date | Feb 21, 2020 |
| Grant date | Jul 18, 2023 |
| Priority date | — |
| Expiry date | Feb 23, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/24556
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A partial group by operator is a group by operator that implements a fallback mechanism. The fallback mechanism is triggered whenever memory pressure reaches a certain threshold. When the fallback mechanism is triggered, a row is included in an output of the partial group by operator without including an aggregation value for a grouping value for the row to an aggregation data structure. A final group by operator computes a final aggregate value of all results, including pre-grouped results and passed through results, from the partial group by operator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.