Method partial_cmp

datafusion/expr/src/udaf.rs:936–943

(&self, other: &Self)

impl PartialOrd for dyn AggregateUDFImpl {
    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
        match self.name().partial_cmp(other.name()) {
            Some(Ordering::Equal) => self.signature().partial_cmp(other.signature()),
            cmp => cmp,
        }
        // TODO (https://github.com/apache/datafusion/issues/17477) avoid recomparing all fields
        .filter(|cmp| *cmp != Ordering::Equal || self == other)
    }
}

/// Encapsulates default implementation of [`AggregateUDFImpl::schema_name`].