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Fix residual NotNaN for null partition values #3689

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Fix residual NotNaN for null partition values #3689

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6 changes: 3 additions & 3 deletions pyiceberg/expressions/visitors.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1852,10 +1852,10 @@ def visit_is_nan(self, term: BoundTerm) -> BooleanExpression:

def visit_not_nan(self, term: BoundTerm) -> BooleanExpression:
val = term.eval(self.struct)
if isinstance(val, SupportsFloat) and not math.isnan(val):
return self.visit_true()
else:
if isinstance(val, SupportsFloat) and math.isnan(val):
return self.visit_false()
else:
return self.visit_true()

def visit_less_than(self, term: BoundTerm, literal: LiteralValue) -> BooleanExpression:
if term.eval(self.struct) < literal.value:
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4 changes: 2 additions & 2 deletions tests/expressions/test_residual_evaluator.py
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Expand Up @@ -211,7 +211,7 @@ def test_is_not_nan() -> None:
res_eval = residual_evaluator_of(spec=spec, expr=predicate, case_sensitive=True, schema=schema)

residual = res_eval.residual_for(Record(None))
assert residual == AlwaysFalse()
assert residual == AlwaysTrue()

residual = res_eval.residual_for(Record(2))
assert residual == AlwaysTrue()
Expand All @@ -223,7 +223,7 @@ def test_is_not_nan() -> None:
res_eval = residual_evaluator_of(spec=spec, expr=predicate, case_sensitive=True, schema=schema)

residual = res_eval.residual_for(Record(None))
assert residual == AlwaysFalse()
assert residual == AlwaysTrue()

residual = res_eval.residual_for(Record(2))
assert residual == AlwaysTrue()
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