godfreyhe commented on code in PR #20303:
URL: https://github.com/apache/flink/pull/20303#discussion_r940018544
##########
flink-table/flink-table-planner/src/test/scala/org/apache/flink/table/planner/runtime/batch/sql/join/JoinITCase.scala:
##########
@@ -770,6 +773,214 @@ class JoinITCase(expectedJoinType: JoinType) extends
BatchTestBase {
)
}
+ @Test
+ def testLeftOuterJoinReorder(): Unit = {
+ // This test is used to test the result after join to multi join and join
reorder.
+ tEnv.getConfig.set(
+ OptimizerConfigOptions.TABLE_OPTIMIZER_JOIN_REORDER_ENABLED,
+ Boolean.box(true))
+ // Register table with stats to support join reorder,
+ // join order LJ(LJ(LJ(T5, T3), T2), T1) will reorder to RJ(T1, LJ(T2,
LJ(T5, T3)))
+ registerCollection(
Review Comment:
I create a JIRA to trace this improvements:
https://issues.apache.org/jira/browse/FLINK-28866
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