beliefer commented on a change in pull request #27058: [SPARK-30395][SQL] When
one or more DISTINCT aggregate expressions operate on the same field, the
DISTINCT aggregate expression allows the use of the FILTER clause
URL: https://github.com/apache/spark/pull/27058#discussion_r364572185
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/RewriteDistinctAggregates.scala
##########
@@ -317,7 +363,74 @@ object RewriteDistinctAggregates extends
Rule[LogicalPlan] {
}
Aggregate(groupByAttrs, patchedAggExpressions, firstAggregate)
} else {
Review comment:
I know what you mean now.
But this PR used to implement distinct aggregate with filter.
If only non distinct aggregate with filter, `RewriteDistinctAggregates` will
do nothing.
So I should check distinct aggregate if has filter.
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