Distributed execution of expressions in a query
US10242061B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2015 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Apr 10, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/951
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer-implemented method for executing a query specification can include evaluating the query specification by a first computing device to identify a candidate expression in the query specification to be executed by a second computing device hosting a source of data specified in the candidate expression. A cost estimate for executing the candidate expression at the first computing device is determined. Whether the cost estimate of executing the candidate expression at the first computing device is greater than a threshold is determined. The candidate expression is replaced with a native query function when the cost estimate of executing the candidate expression at the first computing device is greater than the threshold. The native query function can be executed at the second computing device. It can be determined whether a runtime context is necessary, and if necessary, a context parameter is injected into the native query function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.