[SPARK-19509][SQL]Fix a NPE problem in grouping sets when using an empty column#16874
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stanzhai wants to merge 1 commit intoapache:branch-2.1from
Closed
[SPARK-19509][SQL]Fix a NPE problem in grouping sets when using an empty column#16874stanzhai wants to merge 1 commit intoapache:branch-2.1from
stanzhai wants to merge 1 commit intoapache:branch-2.1from