alfozan commented on issue #25028: [SPARK-28227][SQL] Support TRANSFORM with aggregation. URL: https://github.com/apache/spark/pull/25028#issuecomment-548663422 Another test query: ``` SELECT TRANSFORM(key, abs(key)) USING 'cat' FROM (SELECT DISTINCT key FROM src); ``` The physical plan looks different with this PR applied. in particular, HashAggregate gets another output column, while it should be just one: `HashAggregate(keys=[key#18], functions=[], output=[key#18, **another_output**]) `
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