KurtYoung commented on a change in pull request #15570:
URL: https://github.com/apache/flink/pull/15570#discussion_r611500610
##########
File path:
flink-table/flink-table-planner-blink/src/test/scala/org/apache/flink/table/planner/plan/rules/logical/PushFilterIntoLegacyTableSourceScanRuleTest.scala
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@@ -196,4 +196,17 @@ class PushFilterIntoLegacyTableSourceScanRuleTest extends
TableTestBase {
| TIMESTAMPADD(YEAR, 2, b) >= a
|""".stripMargin)
}
+
+ @Test
+ def testWithNullLiteral(): Unit = {
Review comment:
I would prefer to add this test to another test class since we don't
know when the legacy table source will be dropped.
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