[
https://issues.apache.org/jira/browse/FLINK-6892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16091649#comment-16091649
]
ASF GitHub Bot commented on FLINK-6892:
---------------------------------------
Github user twalthr commented on a diff in the pull request:
https://github.com/apache/flink/pull/4127#discussion_r127995237
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/runtime/functions/ScalarFunctions.scala
---
@@ -82,4 +82,102 @@ object ScalarFunctions {
}
sb.toString
}
+
+ /**
+ * Returns the string str, left-padded with the string pad to a length
of len characters.
+ * If str is longer than len, the return value is shortened to len
characters.
+ */
+ def lpad(base: String, len: Integer, pad: String): String = {
+ if (base == null || len == null || pad == null) {
+ return null
+ }
+ var data = "".getBytes
+ if (data.length < len) {
+ data = new Array[Byte](len)
--- End diff --
Why do we work on bytes here?
> Add L/RPAD supported in SQL
> ---------------------------
>
> Key: FLINK-6892
> URL: https://issues.apache.org/jira/browse/FLINK-6892
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Affects Versions: 1.4.0
> Reporter: sunjincheng
> Assignee: sunjincheng
>
> L/RPAD(str,len,padstr) Returns the string str, left/right-padded with the
> string padstr to a length of len characters. If str is longer than len, the
> return value is shortened to len characters.
> * Syntax:
> LPAD(str,len,padstr)
> * Arguments
> **str: -
> **len: -
> **padstr: -
> * Return Types
> String
> * Example:
> LPAD('hi',4,'??') -> '??hi'
> LPAD('hi',1,'??') -> 'h'
> RPAD('hi',4,'??') -> 'hi??'
> RPAD('hi',1,'??') -> 'h'
> * See more:
> ** [MySQL|
> https://dev.mysql.com/doc/refman/5.7/en/string-functions.html#function_lpad]
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
