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From "Zelaine Fong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-4805) COUNT(*) over window and group by partitioning column results in validation error
Date Tue, 26 Jul 2016 23:49:20 GMT

    [ https://issues.apache.org/jira/browse/DRILL-4805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15394787#comment-15394787
] 

Zelaine Fong commented on DRILL-4805:
-------------------------------------

[~khfaraaz] - Just to confirm -- this issue is not a result of the changes made for DRILL-2330.

> COUNT(*) over window and group by partitioning column results in validation error
> ---------------------------------------------------------------------------------
>
>                 Key: DRILL-4805
>                 URL: https://issues.apache.org/jira/browse/DRILL-4805
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>    Affects Versions: 1.8.0
>         Environment: 4 node cluster
>            Reporter: Khurram Faraaz
>              Labels: window_function
>
> COUNT(*) over window and group by partitioning column results in validation error.
> MapR Drill 1.8.0 commit ID : 34ca63ba
> {noformat}
> 0: jdbc:drill:schema=dfs.tmp> SELECT COUNT(*) OVER ( PARTITION BY c2 ORDER BY c2 )
FROM `tblWnulls.parquet` group by c2;
> Error: VALIDATION ERROR: At line 1, column 14: Expression '*' is not being grouped
> SQL Query null
> [Error Id: 44e03ee7-4c86-4809-90e7-5eaeb634691d on centos-01.qa.lab:31010] (state=,code=0)
> {noformat}
> Postgres returns the COUNT for the same query and same data.
> {noformat}
> postgres=# SELECT COUNT(*) OVER ( PARTITION BY c2 ORDER BY c2 ) FROM t222 group by c2;
>  count 
> -------
>      1
>      1
>      1
>      1
>      1
>      1
> (6 rows)
> {noformat}
> Interestingly, when we do a nested COUNT(COUNT(*)) over the window, Drill does return
the count.
> {noformat}
> 0: jdbc:drill:schema=dfs.tmp> SELECT COUNT(COUNT(*)) OVER ( PARTITION BY c2 ORDER
BY c2 ) FROM `tblWnulls.parquet` group by c2;
> +---------+
> | EXPR$0  |
> +---------+
> | 1       |
> | 1       |
> | 1       |
> | 1       |
> | 1       |
> | 1       |
> +---------+
> 6 rows selected (0.22 seconds)
> {noformat}
> Also without the GROUP BY c2, and with column c2 in the project Drill returns results.
> {noformat}
> 0: jdbc:drill:schema=dfs.tmp> SELECT COUNT(*) OVER ( PARTITION BY c2 ORDER BY c2 ),
c2 FROM `tblWnulls.parquet`;
> +---------+-------+
> | EXPR$0  |  c2   |
> +---------+-------+
> | 7       | a     |
> | 7       | a     |
> | 7       | a     |
> | 7       | a     |
> | 7       | a     |
> | 7       | a     |
> | 7       | a     |
> | 4       | b     |
> | 4       | b     |
> | 4       | b     |
> | 4       | b     |
> | 7       | c     |
> | 7       | c     |
> | 7       | c     |
> | 7       | c     |
> | 7       | c     |
> | 7       | c     |
> | 7       | c     |
> | 6       | d     |
> | 6       | d     |
> | 6       | d     |
> | 6       | d     |
> | 6       | d     |
> | 6       | d     |
> | 2       | e     |
> | 2       | e     |
> | 4       | null  |
> | 4       | null  |
> | 4       | null  |
> | 4       | null  |
> +---------+-------+
> 30 rows selected (0.172 seconds)
> {noformat}



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