xuyangzhong commented on code in PR #24250:
URL: https://github.com/apache/flink/pull/24250#discussion_r1477174266
##########
docs/content/docs/dev/table/sql/queries/window-tvf.md:
##########
@@ -289,6 +289,100 @@ Here is an example invocation on the Bid table:
+------------------+------------------+-------+
```
+### SESSION
+
+{{< hint info >}}
+Note:
+1. Session Window TVF is not supported in Batch mode now.
+2. Session Window Aggregation is not supported [Performance Tuning]({{< ref
"docs/dev/table/tuning" >}}) now.
+3. Session Window Join, Session Window TopN and Session Window Deduplication
are in experimental phase now.
Review Comment:
The `Session Window join`, `Session Window TopN` and `Session Window
Deduplication` is not fully verified about correctness and etc. You can find
more here: https://issues.apache.org/jira/browse/FLINK-34315. However, the pr
in that Jira may not be merged because session window tvf is not supported in
previous version, and will not affect the correctness about legacy plan. What
we only need to do is to add `Note` in doc about this part.
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