nuno-faria commented on code in PR #1315:
URL:
https://github.com/apache/datafusion-python/pull/1315#discussion_r2586400668
##########
python/tests/test_dataframe.py:
##########
@@ -1867,6 +1867,18 @@ def test_to_arrow_table(df):
assert set(pyarrow_table.column_names) == {"a", "b", "c"}
+def test_parquet_non_null_column_to_pyarrow(ctx, tmp_path):
+ path = tmp_path.joinpath("t.parquet")
+
+ ctx.sql("create table t_(a int not null)").collect()
+ ctx.sql("insert into t_ values (1), (2), (3)").collect()
+ ctx.sql(f"copy (select * from t_) to '{path}'").collect()
+
+ ctx.register_parquet("t", path)
+ pyarrow_table = ctx.sql("select max(a) as m from t").to_arrow_table()
+ assert pyarrow_table.to_pydict() == {"m": [3]}
+
+
Review Comment:
Good call, I've added those two new tests.
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