liuyongvs commented on PR #24526:
URL: https://github.com/apache/flink/pull/24526#issuecomment-2024262258

   hi @MartijnVisser INTERSECT is different with array_intersect. instersect is 
a set RelNode, like union/union all, which indeed is a  SQL standard.. while 
array_intersect array_union are just functions, which doesn't have any standard


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