Fokko commented on code in PR #1861:
URL: https://github.com/apache/iceberg-python/pull/1861#discussion_r2021166198
##########
pyiceberg/table/upsert_util.py:
##########
@@ -65,7 +65,16 @@ def get_rows_to_update(source_table: pa.Table, target_table:
pa.Table, join_cols
# When the target table is empty, there is nothing to update :)
return source_table.schema.empty_table()
- diff_expr = functools.reduce(operator.or_, [pc.field(f"{col}-lhs") !=
pc.field(f"{col}-rhs") for col in non_key_cols])
+ diff_expr = functools.reduce(
+ operator.or_,
+ [
+ pc.or_kleene(
+ pc.not_equal(pc.field(f"{col}-lhs"), pc.field(f"{col}-rhs")),
+ pc.is_null(pc.not_equal(pc.field(f"{col}-lhs"),
pc.field(f"{col}-rhs"))),
+ )
+ for col in non_key_cols
+ ],
Review Comment:
This seems to fix it, but feels to complicated 🤔
```suggestion
diff_expr = functools.reduce(
operator.or_,
[
pc.coalesce(
pc.not_equal(pc.field(f"{col}-lhs"), pc.field(f"{col}-rhs")),
pc.is_null(pc.field(f"{col}-lhs")) !=
pc.is_null(pc.field(f"{col}-rhs")),
)
for col in non_key_cols
],
)
```
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