Processing a database table
US9805091B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2014 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Jul 31, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/9027
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Processing a database table comprises receiving a multi-dimensional processing instruction for processing at least two columns of the database table, wherein the two columns comprise a selection column and a sort column, wherein the multi-dimensional processing instruction is for selecting a plurality of candidate rows by sorting based on the selection column and the sort column. An index takes the selection column as master column and the sort column as slave column. Nodes in the index are selected according to the selection column. Each of the selected nodes is associated with a respective slave column value sequence. A merge sort is performed on each of the slave column value sequences to obtain a sort result for the candidate rows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.