swuferhong commented on code in PR #20513:
URL: https://github.com/apache/flink/pull/20513#discussion_r944163602
##########
docs/content/docs/dev/table/sql/queries/hints.md:
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@@ -84,4 +84,222 @@ insert into kafka_table1 /*+
OPTIONS('sink.partitioner'='round-robin') */ select
```
+## Join Hints
+
+{{< label Batch >}}
+
+Join hints allow users to manually choose the join strategy in optimizer, and
manually optimize the execution plan to improve the performance of the query.
Now only support in batch mode.
Review Comment:
> Join hints allow users to suggest the join strategy to optimizer in order
to get a more optimal execution plan. Currently only supported in batch mode.
Done!
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