in crates/iceberg/src/expr/visitors/row_group_metrics_evaluator.rs [288:321]
fn eq(
&mut self,
reference: &BoundReference,
datum: &Datum,
_predicate: &BoundPredicate,
) -> Result<bool> {
let field_id = reference.field().id;
if self.contains_nulls_only(field_id) {
return ROW_GROUP_CANT_MATCH;
}
if let Some(lower_bound) = self.min_value(field_id)? {
if lower_bound.is_nan() {
// NaN indicates unreliable bounds.
// See the InclusiveMetricsEvaluator docs for more.
return ROW_GROUP_MIGHT_MATCH;
} else if lower_bound.gt(datum) {
return ROW_GROUP_CANT_MATCH;
}
}
if let Some(upper_bound) = self.max_value(field_id)? {
if upper_bound.is_nan() {
// NaN indicates unreliable bounds.
// See the InclusiveMetricsEvaluator docs for more.
return ROW_GROUP_MIGHT_MATCH;
} else if upper_bound.lt(datum) {
return ROW_GROUP_CANT_MATCH;
}
}
ROW_GROUP_MIGHT_MATCH
}