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公开(公告)号：US12007961B2
公开(公告)日：2024-06-11
申请号：US18345987
申请日：2023-06-30
Applicant: Snowflake Inc.
Inventor： Istvan Cseri , Benoit Dageville , Ganeshan Ramachandran Iyer , Yucan Liu , Jiaqi Yan
CPC classification number: G06F16/211
Abstract: Techniques for schema mismatch detection and evolution are described. When data is being uploaded into a source table, schema of the data to be uploaded can be compared with the schema for the source table. If a schema mismatch is detected, the schema of the source table can be modified, and the upload can be continued without data loss.
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公开(公告)号：US11599512B1
公开(公告)日：2023-03-07
申请号：US17938401
申请日：2022-10-06
Applicant: Snowflake Inc.
Inventor： Yucan Liu
Abstract: Systems and methods for inferring a schema for a text file are provided. The systems and methods perform operations including: accessing a file comprising a plurality of textual records, each textual record of the plurality of textual records being associated with one or more columns of data; sampling a set of textual records from the plurality of textural records; obtaining a hierarchy comprising a plurality of levels of schema types; determining whether an individual column of the one or more columns of data corresponding to the set of textual records is successfully associated with a first level of the plurality of levels of the schema types and, in response, associating a schema type represented by the first level with the individual column of the one or more columns of data corresponding to the plurality of textual records.
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Patent Agency Ranking
公开(公告)号：US11625367B1
公开(公告)日：2023-04-11
申请号：US17934369
申请日：2022-09-22
Applicant: Snowflake Inc.
Inventor： Istvan Cseri , Benoit Dageville , Ganeshan Ramachandran Iyer , Yucan Liu , Jiaqi Yan
Abstract: Techniques for schema mismatch detection and evolution are described. When data is being uploaded into a source table, schema of the data to be uploaded can be compared with the schema for the source table. If a schema mismatch is detected, the schema of the source table can be modified, and the upload can be continued without data loss.
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公开(公告)号：US11989163B2
公开(公告)日：2024-05-21
申请号：US18162494
申请日：2023-01-31
Applicant: Snowflake Inc.
Inventor： Yucan Liu
CPC classification number: G06F16/212 , G06F16/221 , G06F16/258
Abstract: Systems and methods for inferring a schema for a text file are provided. The systems and methods perform operations including: accessing a file comprising a plurality of textual records, each textual record of the plurality of textual records being associated with one or more columns of data; sampling a set of textual records from the plurality of textural records; obtaining a hierarchy comprising a plurality of levels of schema types; determining whether an individual column of the one or more columns of data corresponding to the set of textual records is successfully associated with a first level of the plurality of levels of the schema types and, in response, associating a schema type represented by the first level with the individual column of the one or more columns of data corresponding to the plurality of textual records.
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公开(公告)号：US11748318B1
公开(公告)日：2023-09-05
申请号：US18104253
申请日：2023-01-31
Applicant: Snowflake Inc.
Inventor： Istvan Cseri , Benoit Dageville , Ganeshan Ramachandran Iyer , Yucan Liu , Jiaqi Yan
CPC classification number: G06F16/211
Abstract: Techniques for schema mismatch detection and evolution are described. When data is being uploaded into a source table, schema of the data to be uploaded can be compared with the schema for the source table. If a schema mismatch is detected, the schema of the source table can be modified, and the upload can be continued without data loss.
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公开(公告)号：US20240119032A1
公开(公告)日：2024-04-11
申请号：US18162494
申请日：2023-01-31
Applicant: Snowflake Inc.
Inventor： Yucan Liu
CPC classification number: G06F16/212 , G06F16/221 , G06F16/258
Abstract: Systems and methods for inferring a schema for a text file are provided. The systems and methods perform operations including: accessing a file comprising a plurality of textual records, each textual record of the plurality of textual records being associated with one or more columns of data; sampling a set of textual records from the plurality of textural records; obtaining a hierarchy comprising a plurality of levels of schema types; determining whether an individual column of the one or more columns of data corresponding to the set of textual records is successfully associated with a first level of the plurality of levels of the schema types and, in response, associating a schema type represented by the first level with the individual column of the one or more columns of data corresponding to the plurality of textual records.
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公开(公告)号：US20230401180A1
公开(公告)日：2023-12-14
申请号：US18345987
申请日：2023-06-30
Applicant: Snowflake Inc.
Inventor： Istvan Cseri , Benoit Dageville , Ganeshan Ramachandran Iyer , Yucan Liu , Jiaqi Yan
IPC: G06F16/21
CPC classification number: G06F16/211
Abstract: Techniques for schema mismatch detection and evolution are described. When data is being uploaded into a source table, schema of the data to be uploaded can be compared with the schema for the source table. If a schema mismatch is detected, the schema of the source table can be modified, and the upload can be continued without data loss.
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