Github user twalthr commented on a diff in the pull request:
https://github.com/apache/flink/pull/4127#discussion_r160628359
--- Diff: docs/dev/table/sql.md ---
@@ -1744,6 +1743,29 @@ CONCAT_WS(separator, string1, string2,...)
</td>
<td>
<p>Returns the string that results from concatenating the
arguments using a separator. The separator is added between the strings to be
concatenated. Returns NULL If the separator is NULL. CONCAT_WS() does not skip
empty strings. However, it does skip any NULL argument. E.g.
<code>CONCAT_WS("~", "AA", "BB", "", "CC")</code> returns
<code>AA~BB~~CC</code></p>
+ </td>
+ </tr>
+
+ <tr>
+ <td>
+ {% highlight text %}
+LPAD(text string, len integer, pad string)
+{% endhighlight %}
+ </td>
+ <td>
+ <p>Returns the string text, left-padded with the string pad to a
length of len characters. If text is longer than len, the return value is
shortened to len characters.</p>
--- End diff --
Can you add two examples where the length is greater/smaller that the
string.
---
