swuferhong commented on code in PR #22918:
URL: https://github.com/apache/flink/pull/22918#discussion_r1253827159
##########
flink-table/flink-table-planner/src/main/scala/org/apache/flink/table/planner/plan/metadata/FlinkRelMdSelectivity.scala:
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@@ -256,6 +257,13 @@ class FlinkRelMdSelectivity private extends
MetadataHandler[BuiltInMetadata.Sele
}
}
+ def getSelectivity(
+ rel: CommonPhysicalWindowTableFunction,
+ mq: RelMetadataQuery,
+ predicate: RexNode): JDouble = {
+ estimateSelectivity(rel, mq, predicate)
+ }
+
Review Comment:
Although this method `getSelectivity(rel: RelNode, mq: RelMetadataQuery,
predicate: RexNode)` is only effective for `BatchPhysicalRel`, I think most of
the methods are actually effective for stream operators. Can we remove this
limitation.
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