[jira] [Commented] (FLINK-9853) add hex support in table api and sql

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-9853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16568745#comment-16568745 ] 

ASF GitHub Bot commented on FLINK-9853:
---------------------------------------

walterddr commented on a change in pull request #6337: [FLINK-9853] [table] Add HEX support 
URL: https://github.com/apache/flink/pull/6337#discussion_r207661800
 
 

 ##########
 File path: docs/dev/table/tableApi.md
 ##########
 @@ -2322,6 +2322,17 @@ NUMERIC.bin()
     </td>
    </tr>
     
+    <tr>
+     <td>
+       {% highlight java %}
+NUMERIC.hex()
+STRING.hex()
+{% endhighlight %}
+     </td>
+    <td>
+      <p>Returns a string representation of an integer numeric value or a string in hex format. Returns null if numeric is null. E.g. "20" leads to "14", "100" leads to "64", "hello,world" leads to "68656c6c6f2c776f726c64".</p>
 
 Review comment:
   same here.

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> add hex support in table api and sql
> ------------------------------------
>
>                 Key: FLINK-9853
>                 URL: https://issues.apache.org/jira/browse/FLINK-9853
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API &amp; SQL
>            Reporter: xueyu
>            Priority: Major
>              Labels: pull-request-available
>
> like in mysql, HEX could take int or string arguments, For a integer argument N, it returns a hexadecimal string representation of the value of N. For a string argument str, it returns a hexadecimal string representation of str where each byte of each character in str is converted to two hexadecimal digits. 
> Syntax:
> HEX(100) = 64
> HEX('This is a test String.') = '546869732069732061207465737420537472696e672e'
> See more: [link MySQL|https://dev.mysql.com/doc/refman/8.0/en/string-functions.html#function_hex]



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