Delaying exceptions in query execution
US11507578B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 19, 2020 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Feb 13, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/9038
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method includes receiving a query expression indicating an expression evaluation for performance upon output of a filtering operator. An operator execution flow indicating performance of the filtering operator serially after the expression evaluation is generated, and execution of this operator execution flow is facilitated by generating an exception column indicating an exception value generated for each of a set of rows based on performing the expression evaluation. The filtering operator of the operator execution flow can be applied by identifying a subset of the set of rows that meet filtering parameters of the filtering operator. When the exception value of at least one row in the subset indicates an error condition, execution of the operator execution flow is aborted. When the exception value of every row in the subset indicates no error, the subset of the set of rows is outputted and execution of the operator execution flow continues.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.