pnowojski 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_r220555518
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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>.</p>
Review comment:
This documentation is desperately missing information about returned types.
As it is now, user has no idea that for example all `POWER` invocations, even
`POWER(2, 5)` yields **SILENTLY** inaccurate results. Same applies to
`COSH(2)`, however in the case of `COSH` this is more or less expected.
I have filled the ticket regarding the already existing functions
https://issues.apache.org/jira/browse/FLINK-10438, but could you add such
information here for `COSH`?
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