[FEA] Support order by on single-level array
#7231
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Signed-off-by: Cindy Jiang <cindyj@nvidia.com>
Signed-off-by: Cindy Jiang <cindyj@nvidia.com>
Signed-off-by: Cindy Jiang <cindyj@nvidia.com>
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We support
order byon single-level array, requested by #5509.Current cudf list lexicographic comparator(rapidsai/cudf#11129) supports multi-level array comparisons. However, during testing we find discrepancies between cudf and Spark sorting results on array of array with null elements. We filed cudf issue rapidsai/cudf#12298 for follow up.
We can support
order byon multi-level array as next steps. Follow up issue is linked here #7230.