公开(公告)号：US20230418818A1

公开(公告)日：2023-12-28

申请号：US18463904

申请日：2023-09-08

Applicant: Snowflake Inc.

Inventor： Prasanna Rajaperumal ,  Thierry Cruanes ,  Allison Waingold Lee ,  Igor Demura ,  Jiaqi Yan ,  Benoit Dageville

IPC: G06F16/2453

CPC classification number: G06F16/24539

Abstract: Systems, methods, and devices for sharing materialized views in multiple tenant database systems. A method includes defining a materialized view over a source table that is associated with a first account of a multiple tenant database. The method includes defining cross-account access rights to the materialized view to a second account such that that second account can read the materialized view without copying the materialized view. The method includes modifying the source table for the materialized view. The method includes identifying whether the materialized view is stale with respect to the source table by merging the materialized view and the source table.

公开(公告)号：US20220414097A1

公开(公告)日：2022-12-29

申请号：US17823572

申请日：2022-08-31

Applicant: Snowflake Inc.

Inventor： Thierry Cruanes ,  Igor Demura ,  Varun Ganesh ,  Prasanna Rajaperumal ,  Libo Wang ,  Jiaqi Yan

IPC: G06F16/2453

Abstract: Embodiments of the present disclosure may provide a dynamic query execution model. This query execution model may provide acceleration by scaling out parallel parts of a query (also referred to as a fragment) to additional computing resources, for example computing resources leased from a pool of computing resources. Execution of the parts of the query may be coordinated by a parent query coordinator, where the query originated, and a fragment query coordinator.

公开(公告)号：US20220222255A1

公开(公告)日：2022-07-14

申请号：US17657257

申请日：2022-03-30

Applicant: Snowflake Inc.

Inventor： Thierry Cruanes ,  Igor Demura ,  Varun Ganesh ,  Prasanna Rajaperumal ,  Libo Wang ,  Jiaqi Yan

IPC: G06F16/2453

Abstract: Embodiments of the present disclosure may provide a dynamic query execution model. This query execution model may provide acceleration by scaling out parallel parts of a query (also referred to as a fragment) to additional computing resources, for example computing resources leased from a pool of computing resources. Execution of the parts of the query may be coordinated by a parent query coordinator, where the query originated, and a fragment query coordinator.

公开(公告)号：US10860381B1

公开(公告)日：2020-12-08

申请号：US16874388

申请日：2020-05-14

Applicant: Snowflake Inc.

Inventor： Thierry Cruanes ,  Igor Demura ,  Varun Ganesh ,  Prasanna Rajaperumal ,  Libo Wang ,  Jiaqi Yan

IPC: G06F9/46 ,  G06F9/50 ,  G06F9/54 ,  H04L29/08

Abstract: Embodiments of the present disclosure may provide dynamic and fair assignment techniques for allocating resources on a demand basis. Assignment control may be separated into at least two components: a local component and a global component. Each component may have an active dialog with each other; the dialog may include two aspects: 1) a demand for computing resources, and 2) a total allowed number of computing resources. The global component may allocate resources from a pool of resources to different local components, and the local components in turn may assign their allocated resources to local competing requests. The allocation may also be throttled or limited at various levels.

公开(公告)号：US20250117387A1

公开(公告)日：2025-04-10

申请号：US18987419

申请日：2024-12-19

Applicant: Snowflake Inc.

Inventor： Thierry Cruanes ,  Benoit Dageville ,  Igor Demura ,  Brian Charles Forney ,  Weili Gu ,  Yujie Li ,  Mohammad Saber Mirzaei ,  Jaeyun Noh ,  Jiaqi Yan

IPC: G06F16/2453

Abstract: Interleaved infrastructure can interleave fragment execution during query compilation. For example, compilation can be paused, and a plan fragment is executed. The results of the plan fragment can be fed back into the compiler, which can then restart the compilation and modify the compilation based on the results of the plan fragment execution. The interleaved workflow provides a flexible, robust infrastructure, which can enable and improve a variety of database features and query optimizations.

公开(公告)号：US11347735B2

公开(公告)日：2022-05-31

申请号：US16889033

申请日：2020-06-01

Applicant: Snowflake Inc.

Inventor： Thierry Cruanes ,  Igor Demura ,  Varun Ganesh ,  Prasanna Rajaperumal ,  Libo Wang ,  Jiaqi Yan

IPC: G06F16/2453

Abstract: Embodiments of the present disclosure may provide a dynamic query execution model. This query execution model may provide acceleration by scaling out parallel parts of a query (also referred to as a fragment) to additional computing resources, for example computing resources leased from a pool of computing resources. Execution of the parts of the query may be coordinated by a parent query coordinator, where the query originated, and a fragment query coordinator.

公开(公告)号：US20210374135A1

公开(公告)日：2021-12-02

申请号：US16889033

申请日：2020-06-01

Applicant: Snowflake Inc.

Inventor： Thierry Cruanes ,  Igor Demura ,  Varun Ganesh ,  Prasanna Rajaperumal ,  Libo Wang ,  Jiaqi Yan

IPC: G06F16/2453

Abstract: Embodiments of the present disclosure may provide a dynamic query execution model. This query execution model may provide acceleration by scaling out parallel parts of a query (also referred to as a fragment) to additional computing resources, for example computing resources leased from a pool of computing resources. Execution of the parts of the query may be coordinated by a parent query coordinator, where the query originated, and a fragment query coordinator.

公开(公告)号：US11163768B1

公开(公告)日：2021-11-02

申请号：US16889042

申请日：2020-06-01

Applicant: Snowflake Inc.

Inventor： Thierry Cruanes ,  Igor Demura ,  Varun Ganesh ,  Prasanna Rajaperumal ,  Libo Wang ,  Jiaqi Yan

IPC: G06F16/2453 ,  G06F9/48 ,  G06F16/14 ,  G06F16/16 ,  G06F16/11

Abstract: Embodiments of the present disclosure may provide a dynamic query execution model with fault tolerance and failure recovery techniques. Embodiments of the present disclosure may utilize checkpoints to map processed output files to their corresponding input files. Therefore, if an error occurs in processing one or more files, the system may only need to reschedule processing of selected file(s).

公开(公告)号：US11113279B2

公开(公告)日：2021-09-07

申请号：US16944150

申请日：2020-07-31

Applicant: Snowflake Inc.

Inventor： Prasanna Rajaperumal ,  Thierry Cruanes ,  Allison Waingold Lee ,  Igor Demura ,  Jiaqi Yan ,  Benoit Dageville

IPC: G06F16/2453 ,  G06F16/27 ,  G06F16/23 ,  G06F16/22 ,  G06F16/2455

Abstract: The subject technology defines a materialized view over a source table that is associated with a first account of a database. The subject technology defines cross-account access rights to the materialized view for a second account. The subject technology modifies the source table for the materialized view. The subject technology identifies that the materialized view is stale with respect to the source table by merging the materialized view and the source table. The subject technology causes the materialized view to be refreshed with respect to the source table.

公开(公告)号：US11100103B2

公开(公告)日：2021-08-24

申请号：US17120546

申请日：2020-12-14

Applicant: Snowflake Inc.

Inventor： Prasanna Rajaperumal ,  Thierry Cruanes ,  Allison Waingold Lee ,  Igor Demura ,  Jiaqi Yan ,  Benoit Dageville

IPC: G06F16/2453 ,  G06F16/27 ,  G06F16/23 ,  G06F16/22 ,  G06F16/2455

Abstract: The subject technology generates a materialized view over a share object, the share object including data associated with a first account. The subject technology merges the materialized view and the share object. The subject technology determines that the materialized view is stale with respect to the share object based at least in part on the merging. The subject technology generates a refreshed materialized view with respect to the share object in response to the determining. The subject technology shares the refreshed materialized view to a second account in response to a request from the second account.