Regression on write_database() to Snowflake with adbc engine since 1.33+ #24433
Description
Checks
- I have checked that this issue has not already been reported.
- I have confirmed this bug exists on the latest version of Polars.
Reproducible example
def push_to_snowflake(
self: pl.DataFrame, connection: adbc_driver_snowflake.dbapi.Connection,
table: str,
) -> None:
if not self.is_empty():
self.write_database(
table_name=table,
connection=connection,
if_table_exists="append",
engine="adbc",
)Log output
File "...\.venv\Lib\site-packages\polars\dataframe\frame.py", line 4377, in write_database
n_rows = cursor.adbc_ingest(
unpacked_table_name,
...<4 lines>...
**(engine_options or {}),
)
File "...\.venv\Lib\site-packages\adbc_driver_manager\dbapi.py", line 974, in adbc_ingest
return _blocking_call(self._stmt.execute_update, (), {}, self._stmt.cancel)
File "adbc_driver_manager/_lib.pyx", line 1695, in adbc_driver_manager._lib._blocking_call
File "adbc_driver_manager/_lib.pyx", line 1391, in adbc_driver_manager._lib.AdbcStatement.execute_update
File "adbc_driver_manager/_lib.pyx", line 261, in adbc_driver_manager._lib.check_error
adbc_driver_manager.InternalError: INTERNAL: not implemented: support for STRING_VIEWIssue description
Issue happens in polars 1.33+ ; fine with <=1.32.3
Expected behavior
dataframe is pushed to Snowflake
Installed versions
--------Version info---------
Polars: 1.33.1
Index type: UInt32
Platform: Windows-11-10.0.26100-SP0
Python: 3.13.7 (tags/v3.13.7:bcee1c3, Aug 14 2025, 14:15:11) [MSC v.1944 64 bit (AMD64)]
LTS CPU: False
----Optional dependencies----
Azure CLI <not installed>
'az' is not recognized as an internal or external command,
operable program or batch file.
adbc_driver_manager 1.7.0
altair <not installed>
azure.identity <not installed>
boto3 <not installed>
cloudpickle <not installed>
connectorx <not installed>
deltalake <not installed>
fastexcel <not installed>
fsspec <not installed>
gevent <not installed>
google.auth <not installed>
great_tables <not installed>
matplotlib <not installed>
numpy 2.3.3
openpyxl <not installed>
pandas 2.3.2
polars_cloud <not installed>
pyarrow 21.0.0
pydantic 2.11.7
pyiceberg <not installed>
sqlalchemy <not installed>
torch <not installed>
xlsx2csv <not installed>
xlsxwriter <not installed>