Commits
Chenxi Li authored and David Li committed 9e8ac565780
ARROW-15506: [C++][Compute] Support Null type in hash_sum/hash_product/hash_mean - If min_count == 0 and skip_nulls == true `hash_sum` returns an int64 scalar of 0, otherwise return a int64 scalar of null - If min_count == 0 and skip_nulls == true `hash_product` returns an int64 scalar of 1, otherwise return a int64 scalar of null - If min_count == 0 and skip_nulls == true `hash_mean` returns an float64 scalar of 0, otherwise return a float64 scalar of null Closes #12299 from Crystrix/arrow-15506 Authored-by: Chenxi Li <chenxi.li@live.com> Signed-off-by: David Li <li.davidm96@gmail.com>