公开(公告)号：US20220207041A1

公开(公告)日：2022-06-30

申请号：US17655124

申请日：2022-03-16

Applicant: Snowflake Inc.

Inventor： Mahmud Allahverdiyev ,  Thierry Cruanes ,  Ismail Oukid ,  Stefan Richter

IPC: G06F16/2455 ,  G06F16/9035 ,  G06F16/28 ,  G06F17/18 ,  G06F16/22

Abstract: A source table organized into a set of batch units is accessed. The source table comprises a column of data corresponding to a semi-structured data type. One or more indexing transformations for an object in the column are generated. The generating of the one or more indexing transformation includes converting the object to one or more stored data types. A pruning index is generated for the source table based in part on the one or more indexing transformations. The pruning index comprises a set of filters that index distinct values in each column of the source table, and each filter corresponds to a batch unit in the set of batch units. The pruning index is stored in a database with an association with the source table.

公开(公告)号：US11308090B2

公开(公告)日：2022-04-19

申请号：US17394149

申请日：2021-08-04

Applicant: Snowflake Inc.

Inventor： Mahmud Allahverdiyev ,  Thierry Cruanes ,  Ismail Oukid ,  Stefan Richter

IPC: G06F16/24 ,  G06F16/2455 ,  G06F16/9035 ,  G06F16/28 ,  G06F17/18 ,  G06F16/22

Abstract: A source table organized into a set of batch units is accessed. The source table comprises a column of data corresponding to a semi-structured data type. One or more indexing transformations for an object in the column are generated. The generating of the one or more indexing transformation includes converting the object to one or more stored data types. A pruning index is generated for the source table based in part on the one or more indexing transformations. The pruning index comprises a set of filters that index distinct values in each column of the source table, and each filter corresponds to a batch unit in the set of batch units. The pruning index is stored in a database with an association with the source table.

公开(公告)号：US20210365461A1

公开(公告)日：2021-11-25

申请号：US17394149

申请日：2021-08-04

Applicant: Snowflake Inc.

Inventor： Mahmud Allahverdiyev ,  Thierry Cruanes ,  Ismail Oukid ,  Stefan Richter

IPC: G06F16/2455 ,  G06F16/9035 ,  G06F16/28 ,  G06F17/18 ,  G06F16/22

Abstract: A source table organized into a set of batch units is accessed. The source table comprises a column of data corresponding to a semi-structured data type. One or more indexing transformations for an object in the column are generated. The generating of the one or more indexing transformation includes converting the object to one or more stored data types. A pruning index is generated for the source table based in part on the one or more indexing transformations. The pruning index comprises a set of filters that index distinct values in each column of the source table, and each filter corresponds to a batch unit in the set of batch units. The pruning index is stored in a database with an association with the source table.