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https://issues.apache.org/jira/browse/FLINK-10340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16632799#comment-16632799
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ASF GitHub Bot commented on FLINK-10340:
----------------------------------------
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_r221416622
##########
File path: docs/dev/table/functions.md
##########
@@ -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:
1. I still suggest to use the tag `<i>` for attribute references like all
the other functions do. The tag `<code>` has different styles in different code
environments (e.g., lines enclosed with `{% highlight XXX %}`).
2. The SQL doc convention was sourced from Calcite
(https://calcite.apache.org/docs/reference.html#operators-and-functions) and
when I reworked this page, the convention was reserved.
3. I also agree that the return type is important to users. However, before
reaching a consensus about the format and the internal implementation, I
suggest to keep the current doc style, i.e., without mentioning the return
type, for now.
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> Add Cosh math function supported in Table API and SQL
> -----------------------------------------------------
>
> Key: FLINK-10340
> URL: https://issues.apache.org/jira/browse/FLINK-10340
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Affects Versions: 1.6.0
> Reporter: Sergey Tsvetkov
> Assignee: vinoyang
> Priority: Minor
> Labels: pull-request-available
>
> Implement udf of cosh, just like in oracle
> [https://docs.oracle.com/cd/B28359_01/server.111/b28286/functions031.htm#SQLRF00623]
>
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