hequn8128 commented on a change in pull request #6432: [FLINK-9970] Add
ASCII/CHR function for table/sql API
URL: https://github.com/apache/flink/pull/6432#discussion_r205932661
##########
File path: docs/dev/table/sql.md
##########
@@ -1850,6 +1860,17 @@ FROM_BASE64(text string)
</td>
</tr>
+ <tr>
+ <td>
+ {% highlight text %}
+CHR(ascii integer)
+{% endhighlight %}
+ </td>
+ <td>
+ <p>Returns string contains a character which converts from a ASCII
integer. If the ASCII less then 0 or greater than 255, return null. E.g.
<code>CHR(65)</code> returns <code>A</code>, <code>CHR(97)</code> returns
<code>a</code>.</p>
Review comment:
1. Returns string contains a character which converts from a ASCII integer.
=> Returns the character corresponding to the input ASCII integer.
2. If the ASCII => If the ASCII code
3. return null. => returns null.
4. returns <code>a</code> => returns <code>'a'</code>
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
With regards,
Apache Git Services
