[jira] [Commented] (DRILL-4917) Unable to alias columns from subquery

["sven0726 (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-4917?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16000383#comment-16000383 ] 

sven0726 commented on DRILL-4917:
---------------------------------

The same thing happened to me

0: jdbc:drill:zk=local> SELECT `respCode`,SUM(`num`) AS `num` FROM <db> GROUP BY `respCode`  ;
+-----------+--------+
| respCode  |  $f1   |
+-----------+--------+

> Unable to alias columns from subquery
> -------------------------------------
>
>                 Key: DRILL-4917
>                 URL: https://issues.apache.org/jira/browse/DRILL-4917
>             Project: Apache Drill
>          Issue Type: Bug
>    Affects Versions: 1.8.0
>            Reporter: Dan Wild
>
> Column aliasing works in a simple query (without subqueries):
> {code}
> select 1 as myVal from (values(1))
> {code}
> My result set gives me one column called myVal as expected
> |myVal||
> |1|
> However, when I run the query
> {code}
> select myVal as myValAlias FROM(select 1 as myVal from (values(1)))
> {code}
> the alias myValAlias is not applied, and the resulting column is still called myVal
> |myVal||
> |1|
> This is problematic because if my query instead looked like
> {code}
> select myVal, SUM(myVal) as mySum FROM(select 1 as myVal from (values(1))) GROUP BY myVal
> {code}
> I would get a result set back that looks like this, with no way to alias the second column:
> |myVal|$f1|
> |1|1|



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