SCHEMA_TAGS

Applies to: check marked yes Databricks SQL check marked yes Databricks Runtime 13.3 LTS and above check marked yes Unity Catalog only.

INFORMATION_SCHEMA.SCHEMA_TAGS contains the schema tagging metadata within the schema, or all schemas if owned by the SYSTEM catalog.

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

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

Definition

The SCHEMA_TAGS relation contains the following.

Name

Data type

Nullable

Description

CATALOG_NAME

STRING

No

The catalog name that a given tag applies to.

SCHEMA_NAME

STRING

No

The schema that the tag applies to.

TAG_NAME

STRING

No

The name of the tag.

TAG_VALUE

STRING

No

The value of the tag.

Constraints

The following constraint applies to the SCHEMA_TAGS relation:

Class

Name

Column List

Description

Primary key

SCHEMA_TAGS_PK

CATALOG_NAME, SCHEMA_NAME, TAG_NAME, TAG_VALUE

Unique identifier for a schema tag.

Foreign key

SCHEMA_TAGS_SCHEMATA_FK

CATALOG_NAME, SCHEMA_NAME

References SCHEMATA

Foreign key

SCHEMA_TAGS_CATALOGS_FK

CATALOG_NAME

References CATALOGS

Example 

> SELECT catalog_name, schema_name, tag_name, tag_value
    FROM information_schema.schema_tags;