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    Data clean rooms using defined access with homomorphic encryption
    91.
    发明授权
    Data clean rooms using defined access with homomorphic encryption 有权

    公开(公告)号：US11763029B2

    公开(公告)日：2023-09-19

    申请号：US18162506

    申请日：2023-01-31

    Applicant: Snowflake Inc.

    Inventor： Artin Avanes ,  Thierry Cruanes ,  Monica J. Holboke ,  Allison Waingold Lee ,  Subramanian Muralidhar ,  David Schultz

    IPC: H04L29/06 ,  G06F21/62 ,  G06F21/53

    CPC classification number: G06F21/6245 ,  G06F21/53 ,  G06F2221/032

    Abstract: A data platform creates an application in a data-provider account, where the application includes one or more application programming interfaces (APIs) corresponding to one or more underlying code blocks. The data platform shares homomorphically encrypted provider data with the application in the data-provider account. The data platform installs, in a data-consumer account, an application instance of the application. The data platform shares homomorphically encrypted consumer data with the application instance in the data-consumer account. The data platform invokes one or more of the APIs of the application instance to execute respective associated underlying code blocks, which are not visible to the data-consumer account, and which operate on the shared homomorphically encrypted provider data and the shared homomorphically encrypted consumer data. The data platform saves homomorphically encrypted output of the one or more respective associated underlying code blocks locally within the data-consumer account.

    Caching query plans in database systems
    92.
    发明授权
    Caching query plans in database systems 有权

    公开(公告)号：US11645281B1

    公开(公告)日：2023-05-09

    申请号：US17823310

    申请日：2022-08-30

    Applicant: Snowflake Inc.

    Inventor： Thierry Cruanes ,  Xuelai Cui ,  Sangyong Hwang ,  Allison Waingold Lee ,  Boyung Lee ,  Nicola Dan Onose ,  William Waddington ,  Jiaqi Yan ,  Li Yan ,  Yongsik Yoon

    IPC: G06F16/2453

    CPC classification number: G06F16/24542 ,  G06F16/24539

    Abstract: The subject technology receives a query, the query including a set of statements for performing the query. The subject technology populates a compilation context based at least in part the query. The subject technology invokes a compiler to perform a compilation process based on the compilation context. The subject technology performs a lookup operation on a stored plan cache for an exact match based on information from the compilation context. The subject technology, in response to determining an exact match, determines whether the particular query plan requires re-compilation based on a data dependent optimization. The subject technology determines whether a plan cache entry corresponding to the particular query plan includes a data property constraint. The subject technology determines whether the data property constraint still holds based on a set of data properties.

    TRANSIENT MATERIALIZED VIEW REWRITE
    93.
    发明申请
    TRANSIENT MATERIALIZED VIEW REWRITE 有权

    公开(公告)号：US20230087933A1

    公开(公告)日：2023-03-23

    申请号：US18059125

    申请日：2022-11-28

    Applicant: Snowflake Inc.

    Inventor： Shrainik Jain ,  Allison Waingold Lee ,  Boyung Lee ,  Prasanna Rajaperumal ,  Jiaqi Yan ,  Yongsik Yoon

    IPC: G06F16/2453

    Abstract: Queries executed against a materialized view can execute up to orders of magnitude faster than equivalent queries on a source (or base) table. However, although a query can reference a materialized view directly, a user (e.g., query author) may not know about a relevant materialized view. Moreover, if a source table has multiple materialized views generated, the user may not know which materialized view to reference in the query. Thus, embodiments of the present disclosure provide techniques for automatically rewriting queries directed to a source table to utilize existing materialized views.

    Query plan caching for networked database systems
    97.
    发明授权
    Query plan caching for networked database systems 有权

    公开(公告)号：US11461327B1

    公开(公告)日：2022-10-04

    申请号：US17658535

    申请日：2022-04-08

    Applicant: Snowflake Inc.

    Inventor： Thierry Cruanes ,  Xuelai Cui ,  Sangyong Hwang ,  Allison Waingold Lee ,  Boyung Lee ,  Nicola Dan Onose ,  William Waddington ,  Jiaqi Yan ,  Li Yan ,  Yongsik Yoon

    IPC: G06F16/2453

    Abstract: The subject technology receives a query, the query including a set of statements for performing the query. The subject technology populates a compilation context based at least in part the query. The subject technology provides the compilation context to a compiler. The subject technology invokes the compiler to perform a compilation process based on the compilation context, the compilation process comprising performing a lookup operation on a stored plan cache for an exact match based on information from the compilation context, the stored plan cache including a set of stored query plans, and determining whether the exact match of a particular query plan is found in the stored plan cache to avoid compiling the query using the compilation context.

    SECURE DATA SHARING IN A MULTI-TENANT DATABASE SYSTEM
    100.
    发明申请
    SECURE DATA SHARING IN A MULTI-TENANT DATABASE SYSTEM 有权

    公开(公告)号：US20220114277A1

    公开(公告)日：2022-04-14

    申请号：US17559226

    申请日：2021-12-22

    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 implementing secure views for zero-copy data sharing in a multi-tenant database system are disclosed. A method includes receiving, by a cross-account, a grant to access a share object comprising a secure view and usage functionality associated with a secure user-defined function (UDF) to underlying data. The method includes accessing, by the cross-account, the share object using the grant. The method includes sending a request to a share component to cause the share component to implement the secure view and the usage functionality associated with the secure UDF. The method includes sending a query to the share component to cause the share component to implement the secure UDF.

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