xccui commented on a change in pull request #6700: [FLINK-10340][table] Add
Cosh math function supported in Table API and SQL
URL: https://github.com/apache/flink/pull/6700#discussion_r221416887
##########
File path: docs/dev/table/functions.md
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@@ -1274,6 +1274,17 @@ ATAN2(numeric1, numeric2)
</td>
</tr>
+ <tr>
+ <td>
+ {% highlight text %}
+COSH(numeric)
+{% endhighlight %}
+ </td>
+ <td>
+ <p>Returns the hyperbolic cosine of <i>numeric</i>. Return value type
is DOUBLE.</p>
Review comment:
Besides, now that
> the (most?) popular convention in SQL is to return DOUBLE if the result is
not precise
why still indicating the return type for each numeric function explicitly?
How about adding a single note for that?
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