Function hash_null

datafusion/common/src/hash_utils.rs:144–155

(random_state: &RandomState, hashes_buffer: &'_ mut [u64], mul_col: bool)

#[cfg(not(feature = "force_hash_collisions"))]
fn hash_null(random_state: &RandomState, hashes_buffer: &'_ mut [u64], mul_col: bool) {
    if mul_col {
        hashes_buffer.iter_mut().for_each(|hash| {
            // stable hash for null value
            *hash = combine_hashes(random_state.hash_one(1), *hash);
        })
    } else {
        hashes_buffer.iter_mut().for_each(|hash| {
            *hash = random_state.hash_one(1);
        })
    }
}

pub trait HashValue {
    fn hash_one(&self, state: &RandomState) -> u64;