lincoln-lil commented on code in PR #21683:
URL: https://github.com/apache/flink/pull/21683#discussion_r1080828555
##########
flink-table/flink-table-planner/src/main/scala/org/apache/flink/table/planner/plan/utils/FlinkRelOptUtil.scala:
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@@ -90,6 +90,58 @@ object FlinkRelOptUtil {
sw.toString
}
+ /**
+ * Converts a sequence of relational expressions to a string. This is
different from
+ * [[RelOptUtil]]#toString and overloaded [[FlinkRelOptUtil]]#toString on
following points:
+ * - Generated string by this method is in a tree style
+ * - Generated string by this method may have more information about
RelNode, such as
Review Comment:
nit: -> 'Generated string by this method may have available [[PlanAdvice]]'?
'retractionTraits' is not easy to understand for developers and I didn't see
more 'withXX' args enabled by default.
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