hequn8128 commented on a change in pull request #9969:
[FLINK-14022][table-planner][table-planner-blink] Add validation check for
places where Python ScalarFunction cannot be used
URL: https://github.com/apache/flink/pull/9969#discussion_r341448064
##########
File path:
flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/planner/plan/rules/FlinkStreamRuleSets.scala
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@@ -326,6 +326,8 @@ object FlinkStreamRuleSets {
* RuleSet to do rewrite on FlinkLogicalRel for Stream
*/
val LOGICAL_REWRITE: RuleSet = RuleSets.ofList(
+ // Rule that splits python ScalarFunctions from join conditions
+ SplitPythonConditionFromJoinRule.INSTANCE,
Review comment:
Put it to a place which close with the other python rules. i.e., put it
before `FlinkCalcMergeRule`
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