Pular para o conteúdo principal

ROW_FILTERS

check marked yes Databricks Runtime 12.2 LTS and above check marked yes Unity Catalog only.

Preview

This feature is in Public Preview.

INFORMATION_SCHEMA.ROW_FILTERS contains the row filter metadata for relations in the catalog, or all catalogs if owned by the SYSTEM catalog.

Information is displayed only for relation the user has permission to interact with.

This relation is an extension to the SQL Standard Information Schema.

Definition​

The ROW_FILTERS relation contains the following.

Name

Data type

Nullable

Description

CATALOG_NAME

STRING

No

Catalog that contains the table.

SCHEMA_NAME

STRING

No

Schema that contains the table.

TABLE_NAME

STRING

No

Name of the relation to which the row filter applies.

FILTER_CATALOG

STRING

No

Catalog that contains the filter function.

FILTER_SCHEMA

STRING

No

Schema that contains the filter function.

FILTER_NAME

STRING

No

The specific name of the function implementing the filter.

FILTER_COL_USAGE

STRING

No

A comma separated list of columns passed to the filter function. Empty if none.

Constraints​

The following constraint applies to the ROW_FILTERS relation:

Class

Name

Column List

Description

Primary key

ROW_FILTERS_PK

CATALOG_NAME, SCHEMA_NAME, TABLE_NAME

Unique identifier for a row filter.

Foreign key

ROW_FILTERS_TABLES_FK

CATALOG_NAME, SCHEMA_NAME, TABLE_NAME

References TABLES

Foreign key

ROW_FILTERS_ROUTINES_FK

FILTER_CATALOG, FILTER_SCHEMA, FILTER_NAME

References ROUTINES

Example​

SQL
-- Return the names of all functions used as row filters in the current catalog.
> SELECT filter_catalog, filter_schema, filter_name, count(1)
    FROM information_schema.row_filters
    GROUP BY ALL
    ORDER BY ALL;
Última atualização em