Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/4373#discussion_r130827249
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/api/stream/sql/JoinTest.scala
---
@@ -55,12 +55,13 @@ class JoinTest extends TableTestBase {
unaryNode(
"DataStreamCalc",
streamTableNode(1),
- term("select", "a", "b", "proctime")
+ term("select", "a", "b", "-(proctime, 3600000) AS -",
--- End diff --
Yes, I'm also curious why this plan would be generated. AFAIK, the
`DataStreamWindowJoin` is very strict about the join predicates it accepts. It
needs two range predicates with time indicator attributes on both sides. If the
computation is pushed into the `DataStreamCalc` the time indicator attribute
should be materialized and no longer be identified as a time indicator.
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