Query plan determination
US9922080B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2015 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Apr 27, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/2453
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one example in accordance with the present disclosure, a method for determining query plans includes obtaining a current query and generating a first literal and a first signature key from the current query. The method includes determining that the first signature key matches a second signature key stored in a parser cache and obtaining a literals data structure corresponding to the second signature key. The literals data structure comprises a group of literals, a list of high and low boundary intervals and a parameterization indicator. The method includes identifying, using the parameterization indicator, a parameterized literal in the group of literals. The method includes determining that a high and low boundary interval for the second parameterized literal contains the first literal and executing a stored query plan on the current query.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.