sunjincheng121 commented on a change in pull request #7196: [FLINK-10974]
[table] Add support for flatMap to table API
URL: https://github.com/apache/flink/pull/7196#discussion_r276923999
##########
File path: docs/dev/table/tableApi.md
##########
@@ -1842,11 +1843,27 @@ ScalarFunction func = new MyMapFunction();
tableEnv.registerFunction("func", func);
Table table = input
- .map(func("c")).as("a, b")
+ .map("func(c)").as("a, b")
{% endhighlight %}
</td>
</tr>
+ <tr>
+ <td>
+ <strong>FlatMap</strong><br>
+ <span class="label label-primary">Batch</span> <span class="label
label-primary">Streaming</span>
+ </td>
+ <td>
+ <p>Performs a flatMap operation with a table function.</p>
+{% highlight java %}
+TableFunction func = new MyFlatMapFunction();
+tableEnv.registerFunction("func", func);
Review comment:
I think is better to add the `MyFlatMapFunction()` definition. So that user
can clearly know why we can `as("a, b")`. What do you think? If so, please
improve the map example as well.
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