公开(公告)号：US20230409639A1

公开(公告)日：2023-12-21

申请号：US18104271

申请日：2023-01-31

Applicant: Snowflake Inc.

Inventor： Khalid Zaman Bijon ,  Thierry Cruanes ,  Simon Holm Jensen ,  Allison Waingold Lee ,  Daniel N. Meredith ,  Subramanian Muralidhar ,  David Schultz ,  Zixi Zhang

IPC: G06F16/903

CPC classification number: G06F16/90335

Abstract: A system for enforcing projection constraints on data values stored in specified variables of a shared dataset of a cloud data platform. A request is received from a first account of the cloud data platform that identifies a first operation to be performed on the shared dataset. A first set of data, including data accessed from a first variable, is accessed from the shared dataset to use in performing the first operation. A projection constraint policy attached to the first variable of the shared dataset is determined, and the projection constraint policy is further determined to be enforced based on the request. Based on the first set of data and the first operation, an output to the first request is generated.

公开(公告)号：US11709837B2

公开(公告)日：2023-07-25

申请号：US17334339

申请日：2021-05-28

Applicant: Snowflake Inc.

Inventor： Matthias Carl Adams ,  Simon Holm Jensen ,  Spyridon Triantafyllis

IPC: G06F16/00 ,  G06F7/00 ,  G06F16/2453

CPC classification number: G06F16/24544 ,  G06F16/24537

Abstract: Disclosed herein are systems and methods for performing a geospatial-function join using an implied interval join. In an embodiment, a database platform receives a query that includes a geospatial-function join, which applies a geospatial-function predicate to a first geography data object of a first relation and a second geography data object of a second relation. The database platform processes the first and second relations through an interval join that applies an interval-join predicate that is implied by the geospatial-function predicate. The database platform obtains query results at least in part by implementing a filter that applies the geospatial-function predicate to an output of the interval join, and outputs the query results.

公开(公告)号：US11669427B2

公开(公告)日：2023-06-06

申请号：US17657393

申请日：2022-03-31

Applicant: Snowflake Inc.

Inventor： Benoit Dageville ,  Johan Harjono ,  Simon Holm Jensen ,  Kunal Prafulla Nabar ,  Steven James Pelley

IPC: G06F11/14 ,  G06F11/30 ,  G06F11/32 ,  G06F16/248 ,  G06F16/2458 ,  G06F16/242 ,  G06F11/34

CPC classification number: G06F11/3072 ,  G06F11/1402 ,  G06F11/327 ,  G06F11/3409 ,  G06F16/248 ,  G06F16/2425 ,  G06F16/2465 ,  G06F16/2474

Abstract: Disclosed herein are embodiments of systems and methods for query-attempt processing in a database environment. In an embodiment, a database platform receives a query, and operates a first query manager of the database platform to manage a first attempt to execute the query. Based on determining that the attempt to execute the query was unsuccessful, the database platform identifies a second query manager of the database platform as implementing a same version of the database platform as the first query manager, and operates the second query manager to manage a first retry attempt to execute the query.

公开(公告)号：US20230168988A1

公开(公告)日：2023-06-01

申请号：US18160908

申请日：2023-01-27

Applicant: Snowflake Inc.

Inventor： Benoit Dageville ,  Johan Harjono ,  Simon Holm Jensen ,  Kunal Prafulla Nabar ,  Steven James Pelley

IPC: G06F11/30 ,  G06F16/2458 ,  G06F11/34 ,  G06F16/242

CPC classification number: G06F11/3082 ,  G06F16/2465 ,  G06F11/3438 ,  G06F11/3409 ,  G06F16/2425 ,  G06F16/2474

Abstract: Automated query retry includes selecting a first node of a plurality of nodes of an execution platform in response to a query. The first node is configured with a first version of a database platform. A first execution of the query is performed using the first version of the database platform at the first node. The method further includes detecting the first execution results in a failed execution. A second execution of the query is scheduled. The second execution uses at least one of the first version of the database platform or a second version of the database platform configured at a second node of the plurality of nodes. The second version is released after the first version. A cause of the failed execution of the query at the first node is determined based at least in part on a result of the second execution of the query.

公开(公告)号：US20230168987A1

公开(公告)日：2023-06-01

申请号：US18160720

申请日：2023-01-27

Applicant: Snowflake Inc.

Inventor： Benoit Dageville ,  Johan Harjono ,  Simon Holm Jensen ,  Kunal Prafulla Nabar ,  Steven James Pelley

IPC: G06F11/30 ,  G06F16/2458 ,  G06F11/34 ,  G06F16/242

CPC classification number: G06F11/3082 ,  G06F16/2465 ,  G06F11/3438 ,  G06F11/3409 ,  G06F16/2425 ,  G06F16/2474

Abstract: Techniques for automated query retry in a database platform include decoding, by at least one hardware processor, a query directed to database data. The query is received by a first management node from a client account of a database system. The method further includes configuring an execution of the query by a first computing node associated with the first management node. The method includes detecting the execution of the query results in a failed execution. The query is transferred from the first management node to a second management node based on the failed execution. The second management node is configured to process tasks that are internal to the database system. A retry execution of the query by a second computing node is configured. The second computing node is associated with the second management node. A cause of the failed execution is determined based on a result of the retry execution.

公开(公告)号：US11321209B2

公开(公告)日：2022-05-03

申请号：US17142962

申请日：2021-01-06

Applicant: Snowflake Inc.

Inventor： Benoit Dageville ,  Johan Harjono ,  Simon Holm Jensen ,  Kunal Prafulla Nabar ,  Steven James Pelley

IPC: G06F11/30 ,  G06F11/32 ,  G06F16/248 ,  G06F16/2458 ,  G06F16/242 ,  G06F11/34 ,  G06F11/14

Abstract: Disclosed herein are systems and methods for query-attempt assignment in a database environment. In an embodiment, a database platform includes first and second database query managers respectively configured to manage external and internal tasks of the database platform. The first database query manager receives a query directed to database data in a client account of the database platform, and an attempt to execute the query is assigned to one or more execution nodes. Based on determining that the attempt was unsuccessful, the database platform transfers the query to the second database manager, which assigns a first retry attempt to execute the query to one or more execution nodes.

公开(公告)号：US20210374137A1

公开(公告)日：2021-12-02

申请号：US17244173

申请日：2021-04-29

Applicant: Snowflake Inc.

Inventor： Matthias Carl Adams ,  Simon Holm Jensen ,  Spyridon Triantafyllis

IPC: G06F16/2453

Abstract: Disclosed herein are systems and methods for point-based relation splitting in geospatial-function-implied interval joins. In an embodiment, a data platform receives a query that applies a geospatial-function predicate to first and second geography data objects from first and second relations. The second relation is divided into point and non-point subsets based on the second data geography object. The data platform routes the point subset along a first path that includes a one-sided interval join that applies, to the first relation and the point subset, an interval-join predicate implied by the geospatial-function predicate. The data platform routes the non-point subset along a second path that does not include the one-sided interval join. The data platform obtains query results at least in part with a filter that applies the geospatial-function predicate to outputs of the one-sided interval join and the second path, and outputs the query results.

公开(公告)号：US11099962B2

公开(公告)日：2021-08-24

申请号：US17200740

申请日：2021-03-12

Applicant: Snowflake Inc.

Inventor： Benoit Dageville ,  Johan Harjono ,  Simon Holm Jensen ,  Kunal Prafulla Nabar ,  Steven James Pelley

IPC: G06F11/30 ,  G06F11/32 ,  G06F16/248 ,  G06F16/2458 ,  G06F16/242 ,  G06F11/34 ,  G06F11/14

Abstract: Systems, methods, and devices for retrying a query. The method includes receiving from a client a query directed to database data stored on a database platform the query being received by a first component of the database platform. The method includes making by the first component an attempt to execute the query and based on determining that the attempt to execute the query was unsuccessful, the first component sending a query retry job to a second component of the database platform. The method includes selecting by the second component based at least in part on the indicated version of the database platform a version of the database platform on which to attempt a first retry attempt to execute the query.

公开(公告)号：US11055193B2

公开(公告)日：2021-07-06

申请号：US17082993

申请日：2020-10-28

Applicant: Snowflake Inc.

Inventor： Benoit Dageville ,  Johan Harjono ,  Simon Holm Jensen ,  Kunal Prafulla Nabar ,  Steven James Pelley

IPC: G06F11/30 ,  G06F11/32 ,  G06F16/248 ,  G06F16/2458 ,  G06F16/242 ,  G06F11/34 ,  G06F11/14

Abstract: Systems, methods, and devices for automatically retrying a query. A method includes receiving a query directed to database data and assigning execution of the query to one or more execution nodes of a database platform. The method includes determining that execution of the query was unsuccessful. The method includes assigning a first retry execution of the query on the first version of the database platform and assigning a second retry execution of the query on a second version of the database platform.

公开(公告)号：US20210124664A1

公开(公告)日：2021-04-29

申请号：US17142962

申请日：2021-01-06

Applicant: Snowflake Inc.

Inventor： Benoit Dageville ,  Johan Harjono ,  Simon Holm Jensen ,  Kunal Prafulla Nabar ,  Steven James Pelley

IPC: G06F11/30 ,  G06F16/2458 ,  G06F16/242 ,  G06F11/32 ,  G06F11/14 ,  G06F16/248 ,  G06F11/34

Abstract: Disclosed herein are systems and methods for query-attempt assignment in a database environment. In an embodiment, a database platform includes first and second database query managers respectively configured to manage external and internal tasks of the database platform. The first database query manager receives a query directed to database data in a client account of the database platform, and an attempt to execute the query is assigned to one or more execution nodes. Based on determining that the attempt was unsuccessful, the database platform transfers the query to the second database manager, which assigns a first retry attempt to execute the query to one or more execution nodes.