godfreyhe commented on a change in pull request #14916:
URL: https://github.com/apache/flink/pull/14916#discussion_r640270303
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File path:
flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/planner/plan/rules/logical/LogicalCorrelateToJoinFromTemporalTableFunctionRule.scala
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@@ -153,9 +153,8 @@ class LogicalCorrelateToJoinFromTemporalTableFunctionRule
*/
private def getRelOptSchema(relNode: RelNode): RelOptSchema = relNode match {
Review comment:
we should avoid to get `RelOptSchema` from RelNode, another approach is
we can add a method to get `FlinkRelBuilder` directly in `FlinkOptimizeContext`.
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