Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/4279#discussion_r126685098
--- Diff: docs/dev/table/sql.md ---
@@ -284,12 +284,14 @@ FROM Orders
<tr>
<td>
<strong>Distinct</strong><br>
- <span class="label label-primary">Batch</span>
+ <span class="label label-primary">Batch</span> <span class="label
label-primary">Streaming</span> <br>
+ <span class="label label-info">Result Updating</span>
</td>
<td>
{% highlight sql %}
SELECT DISTINCT users FROM Orders
{% endhighlight %}
+ <p><b>Note:</b> DISTINCT on a streaming table produces an updating
result. And for streaming queries the required state to compute the query
result might grow infinitely depending on the number of distinct fields. Please
provide a query configuration with valid retention interval to prevent
excessive state size. See <a href="streaming.html">Streaming Concepts</a> for
details.</p>
--- End diff --
I think we do not need this first sentence (should be covert by the "Result
Updating" tag).
-> `And for streaming queries the required ...` -> `For streaming queries
the required ...`
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