adriangb opened a new issue, #10267: URL: https://github.com/apache/datafusion/issues/10267
### Is your feature request related to a problem or challenge? ```python from pathlib import Path import shutil import polars as pl from deltalake import DeltaTable import pyarrow.dataset as ds import duckdb from datafusion import SessionContext DIR = Path("data/records") shutil.rmtree(DIR, ignore_errors=True) df = pl.DataFrame({'project_id': [1, 2, 3, 1, 2, 3], 'x': [1, 2, 3, 1, 2, 3]}) df.write_delta(DIR, delta_write_options={'partition_by': ['project_id'], 'engine': 'rust'}) table = DeltaTable(DIR) dataset = table.to_pyarrow_dataset() filtered = dataset.filter(ds.field('project_id').isin([1, 2])) db = duckdb.arrow(filtered) con = duckdb.connect() df = pl.from_arrow(con.execute("SELECT * FROM filtered").arrow()) print(df) df = pl.from_arrow(con.execute("SELECT * FROM filtered WHERE project_id = 3").arrow()) print(df) df = pl.scan_pyarrow_dataset(filtered) print(df.collect()) ctx = SessionContext() ctx.register_dataset("records", filtered) df = ctx.sql("SELECT * FROM records") print(df) ``` ``` shape: (4, 2) ┌────────────┬─────┐ │ project_id ┆ x │ │ --- ┆ --- │ │ i64 ┆ i64 │ ╞════════════╪═════╡ │ 1 ┆ 1 │ │ 1 ┆ 1 │ │ 2 ┆ 2 │ │ 2 ┆ 2 │ └────────────┴─────┘ shape: (0, 2) ┌────────────┬─────┐ │ project_id ┆ x │ │ --- ┆ --- │ │ i64 ┆ i64 │ ╞════════════╪═════╡ └────────────┴─────┘ shape: (4, 2) ┌────────────┬─────┐ │ project_id ┆ x │ │ --- ┆ --- │ │ i64 ┆ i64 │ ╞════════════╪═════╡ │ 1 ┆ 1 │ │ 1 ┆ 1 │ │ 2 ┆ 2 │ │ 2 ┆ 2 │ └────────────┴─────┘ Traceback (most recent call last): File "/Users/adriangb/GitHub/platform/test.py", line 39, in <module> print(df) Exception: External error: Python error PyErr { type: <class 'ValueError'>, value: ValueError('Retrieving fragments of a filtered or projected dataset is not allowed. Remove the filtering.'), traceback: Some(<traceback object at 0x134a09680>) } ``` ### Describe the solution you'd like _No response_ ### Describe alternatives you've considered _No response_ ### Additional context _No response_ -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For additional commands, e-mail: github-h...@datafusion.apache.org