[SPARK-19509][SQL] Grouping Sets do not respect nullable grouping columns#16873
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hvanhovell wants to merge 2 commits intoapache:branch-2.1from
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[SPARK-19509][SQL] Grouping Sets do not respect nullable grouping columns#16873hvanhovell wants to merge 2 commits intoapache:branch-2.1from
hvanhovell wants to merge 2 commits intoapache:branch-2.1from