Invention Grant
- Patent Title: Fingerprints for compressed columnar data search
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Application No.: US16415572Application Date: 2019-05-17
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Publication No.: US11238106B2Publication Date: 2022-02-01
- Inventor: Carmen Kwan , Reza Sherkat
- Applicant: SAP SE
- Applicant Address: DE Walldorf
- Assignee: SAP SE
- Current Assignee: SAP SE
- Current Assignee Address: DE Walldorf
- Agency: Fish & Richardson P.C.
- Main IPC: G06F7/00
- IPC: G06F7/00 ; G06F16/9035 ; G06F16/22 ; H03M7/30 ; G06F16/18 ; G06K9/62 ; G06F16/903

Abstract:
The present disclosure involves systems, software, and computer implemented methods for compressed columnar data search using fingerprints. One example method includes compressing columnar data that includes dividing the columnar data into multiple data blocks and generating a fingerprint for each data block, storing the compressed columnar data and the generated fingerprints in an in-memory database, receiving a query for the columnar data, for each in-memory data block stored in the in-memory database, determining whether the in-memory data block satisfies the query and in response to a determination that the in-memory data block does not satisfy the query, pruning the in-memory data block from the multiple data blocks to generate an unpruned set of data blocks, decompressing the unpruned set of data blocks, and performing a query search on the decompressed unpruned set of data blocks for the received query.
Information query