- Schemas:
SEMANTIC_DIMENSIONS view¶
This ACCOUNT_USAGE view displays a row for each dimension defined in a semantic view.
Columns¶
| Column name | Data type | Description |
|---|---|---|
semantic_dimension_id | NUMBER | ID of the dimension in the semantic view. |
semantic_dimension_name | VARCHAR | Name of the dimension in the semantic view. |
semantic_table_id | NUMBER | ID of the semantic table the dimension belongs to. |
semantic_table_name | VARCHAR | Name of the semantic table the dimension belongs to. |
semantic_view_id | NUMBER | ID of the semantic view. |
semantic_view_name | VARCHAR | Name of the semantic view. |
semantic_view_schema_id | NUMBER | ID of the schema to which the semantic view belongs. |
semantic_view_schema_name | VARCHAR | Schema to which the semantic view belongs. |
semantic_view_database_id | NUMBER | ID of the database to which the semantic view belongs. |
semantic_view_database_name | VARCHAR | Database to which the semantic view belongs. |
data_type | VARCHAR | Data type of the dimension expression. |
expression | VARCHAR | The SQL expression used to calculate the dimension. |
synonyms | ARRAY(VARCHAR) | List of the synonyms for the dimension. |
created | TIMESTAMP_LTZ | Creation time of the dimension. |
last_altered | TIMESTAMP_LTZ | Date and time the object was last altered by a DML, DDL, or background metadata operation. See |
deleted | TIMESTAMP_LTZ | Date and time when the dimension was dropped. |
comment | VARCHAR | Description of the dimension. |
cortex_search_service_database | VARCHAR | Name of the database containing the Cortex Search Service that the dimension uses. |
cortex_search_service_schema | VARCHAR | Name of the schema containing the Cortex Search Service that the dimension uses. |
cortex_search_service | VARCHAR | Name of the Cortex Search Service that the dimension uses. |
cortex_search_service_column | VARCHAR | Name of the column that the Cortex Search Service allows you to search on, if the dimension uses a Cortex Search Service. |
Usage notes¶
- Latency for the view can be up to 120 minutes (2 hours).
-
The LAST_ALTERED column is updated when the following operations are performed on an object:
- DDL operations.
- DML operations (for tables only). This column is updated even when no rows are affected by the DML statement.
- Background maintenance operations on metadata performed by Snowflake.
Examples¶
Retrieve the list of all dimensions for the semantic view O_TPCH_SEMANTIC_VIEW in the database MY_DB:
SELECT * FROM SNOWFLAKE.ACCOUNT_USAGE.SEMANTIC_DIMENSIONS WHERE semantic_view_name = 'O_TPCH_SEMANTIC_VIEW' AND semantic_view_database_name = 'MY_DB';
+-----------------------+------------------------------------+-------------------+---------------------+------------------+----------------------+-------------------------+---------------------------+---------------------------+-----------------------------+-------------+----------------------+----------+-------------------------------+-------------------------------+---------+---------+ | SEMANTIC_DIMENSION_ID | SEMANTIC_DIMENSION_NAME | SEMANTIC_TABLE_ID | SEMANTIC_TABLE_NAME | SEMANTIC_VIEW_ID | SEMANTIC_VIEW_NAME | SEMANTIC_VIEW_SCHEMA_ID | SEMANTIC_VIEW_SCHEMA_NAME | SEMANTIC_VIEW_DATABASE_ID | SEMANTIC_VIEW_DATABASE_NAME | DATA_TYPE | EXPRESSION | SYNONYMS | CREATED | LAST_ALTERED | DELETED | COMMENT | |-----------------------+------------------------------------+-------------------+---------------------+------------------+----------------------+-------------------------+---------------------------+---------------------------+-----------------------------+-------------+----------------------+----------+-------------------------------+-------------------------------+---------+---------| | 391 | D_CUSTOMER_REGION_NAME_FROM_REGION | 99 | CUSTOMER | 49 | O_TPCH_SEMANTIC_VIEW | 92 | MY_SCHEMA | 7 | MY_DB | VARCHAR(25) | region.d_region_name | NULL | 2025-02-28 16:16:04.389 -0800 | 2025-02-28 16:16:04.389 -0800 | NULL | NULL | | 392 | D_CUSTOMER_NATION_NAME | 99 | CUSTOMER | 49 | O_TPCH_SEMANTIC_VIEW | 92 | MY_SCHEMA | 7 | MY_DB | VARCHAR(25) | nation.d_nation_name | NULL | 2025-02-28 16:16:04.389 -0800 | 2025-02-28 16:16:04.389 -0800 | NULL | NULL | | 393 | D_CUSTOMER_MARKET_SEGMENT | 99 | CUSTOMER | 49 | O_TPCH_SEMANTIC_VIEW | 92 | MY_SCHEMA | 7 | MY_DB | VARCHAR(10) | c_mktsegment | NULL | 2025-02-28 16:16:04.389 -0800 | 2025-02-28 16:16:04.389 -0800 | NULL | NULL | | 387 | D_NATION_NAME | 98 | NATION | 49 | O_TPCH_SEMANTIC_VIEW | 92 | MY_SCHEMA | 7 | MY_DB | VARCHAR(25) | n_name | NULL | 2025-02-28 16:16:04.388 -0800 | 2025-02-28 16:16:04.388 -0800 | NULL | NULL | | 389 | D_REGION_NAME | 97 | REGION | 49 | O_TPCH_SEMANTIC_VIEW | 92 | MY_SCHEMA | 7 | MY_DB | VARCHAR(25) | r_name | NULL | 2025-02-28 16:16:04.389 -0800 | 2025-02-28 16:16:04.389 -0800 | NULL | NULL | | 394 | D_CUSTOMER_COUNTRY_CODE | 99 | CUSTOMER | 49 | O_TPCH_SEMANTIC_VIEW | 92 | MY_SCHEMA | 7 | MY_DB | VARCHAR(15) | LEFT(c_phone, 2) | NULL | 2025-02-28 16:16:04.389 -0800 | 2025-02-28 16:16:04.389 -0800 | NULL | NULL | | 390 | D_CUSTOMER_REGION_NAME | 99 | CUSTOMER | 49 | O_TPCH_SEMANTIC_VIEW | 92 | MY_SCHEMA | 7 | MY_DB | VARCHAR(25) | nation.d_region_name | NULL | 2025-02-28 16:16:04.389 -0800 | 2025-02-28 16:16:04.389 -0800 | NULL | NULL | | 388 | D_REGION_NAME | 98 | NATION | 49 | O_TPCH_SEMANTIC_VIEW | 92 | MY_SCHEMA | 7 | MY_DB | VARCHAR(25) | region.d_region_name | NULL | 2025-02-28 16:16:04.389 -0800 | 2025-02-28 16:16:04.389 -0800 | NULL | NULL | +-----------------------+------------------------------------+-------------------+---------------------+------------------+----------------------+-------------------------+---------------------------+---------------------------+-----------------------------+-------------+----------------------+----------+-------------------------------+-------------------------------+---------+---------+