When querying NULL or INTERVAL columns from a Databricks SQL warehouse, the connector Cursor().description property reports the type code of the columns as a 'string'. If I understand things correctly, I'd have expected it to return 'void' and 'interval', reflecting the underlying data type in Databricks SQL.
from databricks import sql
with sql.connect(
server_hostname = os.getenv("DATABRICKS_HOST"),
http_path = os.getenv("DATABRICKS_HTTP_PATH"),
access_token = os.getenv("DATABRICKS_TOKEN"),
) as connection:
with connection.cursor() as cursor:
cursor.execute("SELECT NULL, CAST(NULL AS VOID), INTERVAL '13' MONTH")
print(cursor.description)
print(cursor.fetchall())
print(cursor.description)
[('NULL', 'string', None, None, None, None, None), ('CAST(NULL AS VOID)', 'string', None, None, None, None, None), ("INTERVAL '13' MONTH", 'string', None, None, None, None, None)]
[Row(NULL=None, CAST(NULL AS VOID)=None, INTERVAL '13' MONTH='1-1')]
[('NULL', 'string', None, None, None, None, None), ('CAST(NULL AS VOID)', 'string', None, None, None, None, None), ("INTERVAL '13' MONTH", 'string', None, None, None, None, None)]
When querying NULL or INTERVAL columns from a Databricks SQL warehouse, the connector
Cursor().descriptionproperty reports the type code of the columns as a'string'. If I understand things correctly, I'd have expected it to return 'void' and 'interval', reflecting the underlying data type in Databricks SQL.There is no definition for VOID and INTERVAL types here.
Minimal code example: