[jira] [Created] (DRILL-574) RPAD function returns different result compared to other rdbms when length is less than string

["Krystal (JIRA)" <ji...@apache.org>]

Krystal created DRILL-574:
-----------------------------

             Summary: RPAD function returns different result compared to other rdbms when length is less than string
                 Key: DRILL-574
                 URL: https://issues.apache.org/jira/browse/DRILL-574
             Project: Apache Drill
          Issue Type: Bug
    Affects Versions: 1.0.0
            Reporter: Krystal


The rpad function - rpad(str1, length [, str2]) returns different result compared to postgres, oracle and mysql when length is less than the lenght of str1.  For example:

select * from voter where voter_id=10;
 voter_id |     name      | age | registration | contributions | voterzone |     create_time     
--------+---------------+-----+--------------+---------------+-----------+---------------------
     10 | tom underhill |  75 | socialist    |        525.33 |     18592 | 2015-01-24 07:27:05

0: jdbc:drill:schema=dfs> select rpad(name, 8, 'A') from voter where voter_id=10;
+------------+
|   EXPR$0   |
+------------+
| nderhill   |
+------------+

The above result from drill truncates the name from right to left.  For the other rdbms:
SQL> select rpad(name, 8, 'A') from voter where voter_id=10;

RPAD(NAM
--------
tom unde

Looks like truncation occurs from left to right eventhough it's rpad.  



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