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https://issues.apache.org/jira/browse/FLINK-10152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16632725#comment-16632725
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ASF GitHub Bot commented on FLINK-10152:
----------------------------------------
yanghua commented on a change in pull request #6773: [FLINK-10152] [table] Add
reverse function in Table API and SQL
URL: https://github.com/apache/flink/pull/6773#discussion_r221411780
##########
File path: docs/dev/table/functions.md
##########
@@ -2460,6 +2460,17 @@ REPLACE(string1, string2, string3)
</td>
</tr>
+ <tr>
+ <td>
+ {% highlight text %}
+REVERSE(string)
+{% endhighlight %}
+ </td>
+ <td>
+ <p>Returns the reversed result from <i>string</i>.</p>
Review comment:
If there is an example, it would be better to demonstrate the use of the
function.
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> Add reverse supported in TableAPI and SQL
> -----------------------------------------
>
> Key: FLINK-10152
> URL: https://issues.apache.org/jira/browse/FLINK-10152
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: Guibo Pan
> Assignee: Guibo Pan
> Priority: Major
> Labels: pull-request-available
>
> reverse is useful function for procession String.
> for example:
> {code:java}
> select reverse("abcd") // return "dcba"
> {code}
> It is supported as a UDF in Hive, more details please see[1] [1]:
> https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF#LanguageManualUDF-StringFunctions
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