Invention Grant
- Patent Title: Schema evolution for the serialization of non-primary key columnar data into row-organized byte sequences
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Application No.: US17656558Application Date: 2022-03-25
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Publication No.: US11709808B1Publication Date: 2023-07-25
- Inventor: Benoit Dageville , Adrian Hamza , William Waddington , Khaled Yagoub , Wumengjian Zhu , Lishi Jiang
- Applicant: Snowflake Inc.
- Applicant Address: US MT Bozeman
- Assignee: Snowflake Inc.
- Current Assignee: Snowflake Inc.
- Current Assignee Address: US MT Bozeman
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: G06F16/21
- IPC: G06F16/21 ; G06F16/22
Abstract:
The subject technology receives a statement to perform an operation to add a new column into a table. The subject technology generates a schema hash value for a new schema version associated with a new schema version value. The subject technology stores a mapping of the schema hash value to the new schema version value for the table in a metadata database. The subject technology stores a new schema entry based on the schema hash value, the new schema version value, and the new column for the table in the metadata database. The subject technology performs an operation to add the new column to the table.
Information query
