公开(公告)号：US20220138224A1

公开(公告)日：2022-05-05

申请号：US17573550

申请日：2022-01-11

Applicant: SNOWFLAKE INC.

Inventor： Thierry Cruanes ,  Benoit Dageville ,  Allison Waingold Lee

IPC: G06F16/27 ,  G06F9/50 ,  G06F16/14 ,  G06F16/21 ,  G06F16/22 ,  G06F16/951 ,  G06F16/182 ,  G06F16/23 ,  G06F16/2455 ,  G06F16/2458 ,  G06F16/9535 ,  G06F16/2453 ,  G06F9/48 ,  H04L67/1095 ,  H04L67/568 ,  H04L67/1097

Abstract: Embodiments of the present disclosure relate to systems and methods for executing queries on a database platform. A processing device may execute a first operator in a query plan to process a set of data and generate an intermediate result of a query. the intermediate result of the first operator may be pushed, during execution of the query plan, to a plurality of secondary operators as the intermediate result is generated. Each of the plurality of secondary operators may be initiated to concurrently process the intermediate result to generate a plurality of second results, and a timing of processing of the intermediate result by one or more of the plurality of secondary operators is adjusted to coordinate the generation of the plurality of second results. The processor may execute the final operation on the plurality of second results to generate a final result.

公开(公告)号：US20220114194A1

公开(公告)日：2022-04-14

申请号：US17645275

申请日：2021-12-20

Applicant: Snowflake Inc.

Inventor： Thierry Cruanes ,  Benoit Dageville ,  Allison Waingold Lee

IPC: G06F16/27 ,  G06F9/50 ,  G06F16/14 ,  G06F16/21 ,  G06F16/22 ,  G06F16/951 ,  G06F16/182 ,  G06F16/23 ,  G06F16/2455 ,  G06F16/2458 ,  G06F16/9535 ,  G06F16/2453 ,  G06F9/48 ,  H04L67/1095 ,  H04L67/568 ,  H04L67/1097

Abstract: A system and method for managing data storage and data access with querying data in a distributed system without buffering the results on intermediate operations in disk storage.

公开(公告)号：US20220100890A1

公开(公告)日：2022-03-31

申请号：US17521348

申请日：2021-11-08

Applicant: Snowflake Inc.

Inventor： Justin Langseth ,  Matthew J. Glickman ,  Christian Kleinerman ,  Robert Muglia ,  Daniel Freundel ,  Thierry Cruanes ,  Allison Waingold Lee

IPC: G06F21/62 ,  G06F16/2455 ,  H04L9/32

Abstract: Systems, methods, and devices for generating a secure join of database data are disclosed. A method includes hashing datapoints of a consumer account and creating a secure view of the hashed datapoints of the consumer account. The method further includes processing, using a secure user defined function (UDF), the hashed datapoints of the consumer account and datapoints of a provider account to generate a secure join key, wherein the hashed data points of the consumer account are provided to the secure UDF using the secure view. The secure join key is then analyzed.

公开(公告)号：US11126640B2

公开(公告)日：2021-09-21

申请号：US17142100

申请日：2021-01-05

Applicant: SNOWFLAKE INC.

Inventor： Benoit Dageville ,  Thierry Cruanes ,  Marcin Zukowski ,  Allison Waingold Lee ,  Philipp Thomas Unterbrunner

IPC: G06F16/27 ,  G06F9/50 ,  G06F16/14 ,  G06F16/21 ,  G06F16/22 ,  G06F16/951 ,  G06F16/182 ,  G06F16/23 ,  G06F16/2455 ,  G06F16/2458 ,  G06F16/9535 ,  G06F16/2453 ,  G06F9/48 ,  H04L29/08

Abstract: A method, apparatus, and system for join operations of a plurality of relations that are distributed over a plurality of storage locations over a network of computing components.

公开(公告)号：US20210286892A1

公开(公告)日：2021-09-16

申请号：US17332793

申请日：2021-05-27

Applicant: Snowflake Inc.

Inventor： Allison Waingold Lee ,  Peter Povinec ,  Martin Hentschel ,  Robert Muglia

IPC: G06F21/62 ,  G06F16/245 ,  G06F16/22

Abstract: Systems, methods, and devices for secure view-based data sharing are disclosed. A method in accordance with embodiments disclosed herein comprises associating, by one or more processors, view privileges of a secure view with one or more of a plurality of underlying details of a share object of a first account such that each of the one or more underlying details of the share object comprises a definition of the secure view. The method further comprises: in response to receiving a request from a second account to access any underlying details of the share object, using a secure projection that does not match any rewrite rule preconditions to rewrite a query plan of the request to prevent expressions that do not originate from the secure view from being pushed down below a boundary of the secure view.

公开(公告)号：US20210271690A1

公开(公告)日：2021-09-02

申请号：US17326052

申请日：2021-05-20

Applicant: SNOWFLAKE INC.

Inventor： Thierry Cruanes ,  Benoit Dageville ,  Allison Waingold Lee

IPC: G06F16/27 ,  G06F16/9535 ,  G06F9/50 ,  G06F16/22 ,  G06F16/2455 ,  G06F16/2453 ,  G06F9/48 ,  G06F16/14 ,  G06F16/951 ,  H04L29/08 ,  G06F16/21 ,  G06F16/23 ,  G06F16/182 ,  G06F16/2458

Abstract: A system and method for managing data storage and data access with querying data in a distributed system without buffering the results on intermediate operations in disk storage.

公开(公告)号：US11048815B2

公开(公告)日：2021-06-29

申请号：US16055824

申请日：2018-08-06

Applicant: Snowflake Inc.

Inventor： Allison Waingold Lee ,  Peter Povinec ,  Martin Hentschel ,  Robert Muglia

IPC: G06F21/62 ,  G06F21/60 ,  G06F16/245 ,  G06F16/22 ,  G06F21/71

Abstract: Systems, methods, and devices for implementing secure views for zero-copy data sharing in a multi-tenant database system are disclosed. A method includes generating a share object in a first account comprising a share role. The method includes associating view privileges for the share object such that an underlying detail of the share object comprises a secure view definition. The method includes granting, to a second account, cross-account access rights to the share role or share object in the first account. The method includes receiving a request from the second account to access data or services of the first account and providing a response to the second account based on the data or services of the first account. The method is such that the underlying detail of the share object that comprises the secure view definition is hidden from the second account and visible to the first account.

公开(公告)号：US20210182241A1

公开(公告)日：2021-06-17

申请号：US17186389

申请日：2021-02-26

Applicant: SNOWFLAKE INC.

Inventor： Benoit Dageville ,  Thierry Cruanes ,  Marcin Zukowski ,  Allison Waingold Lee ,  Philipp Thomas Unterbrunner

IPC: G06F16/172 ,  G06F16/13 ,  G06F16/182 ,  G06F16/22 ,  G06F16/2455

Abstract: A query directed to database data stored across a set of files is received. The query includes predicates and each file from the set of files is associated with metadata stored in a metadata store that is separate from a storage platform that stores the set of files. One or more files are removed from the set of files whose metadata does not satisfy a predicate of the plurality of predicates to generate a pruned set of files. One or more predicates are removed that are satisfied by the metadata of the pruned set of files to generate a modified query.

公开(公告)号：US10997201B2

公开(公告)日：2021-05-04

申请号：US16039710

申请日：2018-07-19

Applicant: SNOWFLAKE INC.

Inventor： Benoit Dageville ,  Thierry Cruanes ,  Marcin Zukowski ,  Allison Waingold Lee ,  Philipp Thomas Unterbrunner

IPC: G06F16/242 ,  G06F16/27 ,  G06F9/50 ,  G06F16/14 ,  G06F16/21 ,  G06F16/22 ,  G06F16/951 ,  G06F16/182 ,  G06F16/23 ,  G06F16/2455 ,  G06F16/2458 ,  G06F16/9535 ,  G06F16/2453 ,  G06F9/48 ,  H04L29/08

Abstract: A method, apparatus, and system for join operations of a plurality of relations that are distributed over a plurality of storage locations over a network of computing components.

公开(公告)号：US10997169B2

公开(公告)日：2021-05-04

申请号：US17125453

申请日：2020-12-17

Applicant: Snowflake Inc.

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

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

Abstract: Using one or more processors, generating a materialized view over a share object, the share object, including data associated with a first account. Using the one or more processors, merging the materialized view and the share object. Using the one or more processors, updating the data associated with the first account subsequent to generating the materialized view. Using the one or more processors, generating a refreshed materialized view with respect to the share object in response to detecting the updated data. Using the one or more processors, sharing the refreshed materialized view to a second account in response to a request from the second account.