[jira] [Commented] (DRILL-2202) Star is no expanded correctly during group by over named subquery

["Sean Hsuan-Yi Chu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-2202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14336943#comment-14336943 ] 

Sean Hsuan-Yi Chu commented on DRILL-2202:
------------------------------------------

I tried a few but cannot reproduce this issue.

For example:
select * from ( select n_name, n_nationkey, n_regionkey from cp.`tpch/nation.parquet` ) as dt(x1, x2, x3) group by dt.x1, dt.x2, dt.x3;


> Star is no expanded correctly during group by over named subquery
> -----------------------------------------------------------------
>
>                 Key: DRILL-2202
>                 URL: https://issues.apache.org/jira/browse/DRILL-2202
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>    Affects Versions: 0.8.0
>            Reporter: Victoria Markman
>            Assignee: Sean Hsuan-Yi Chu
>             Fix For: 1.0.0
>
>         Attachments: drillbit.log
>
>
> I gave subquery name and named all the columns.
> Group by condition is the same as expanded star ...
> Should work.
> {code}
> 0: jdbc:drill:schema=dfs> select * from ( select a1, b1, c1 from t1 ) as dt(x1, x2, x3) group by dt.x1, dt.x2, dt.x3;
> Query failed: AssertionError: Internal error: invariant violated: conversion result not null
> Error: exception while executing query: Failure while executing query. (state=,code=0)
> {code}
> Workaround: replace star with column names manually:
> {code}
> 0: jdbc:drill:schema=dfs> select dt.x1, dt.x2, dt.x3 from ( select a1, b1, c1 from t1 ) as dt(x1, x2, x3) group by dt.x1, dt.x2, dt.x3;
> +------------+------------+------------+
> |     x1     |     x2     |     x3     |
> +------------+------------+------------+
> | 1          | aaaaa      | 2015-01-01 |
> | 2          | bbbbb      | 2015-01-02 |
> | 3          | ccccc      | 2015-01-03 |
> | 4          | null       | 2015-01-04 |
> | 5          | eeeee      | 2015-01-05 |
> | 6          | fffff      | 2015-01-06 |
> | 7          | ggggg      | 2015-01-07 |
> | null       | hhhhh      | 2015-01-08 |
> | 9          | iiiii      | null       |
> | 10         | jjjjj      | 2015-01-10 |
> +------------+------------+------------+
> 10 rows selected (0.16 seconds)
> {code}



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