SCHEMA_TAGS
Applies to: 
Databricks SQL Databricks Runtime 13.3 and above 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;