drill-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Deneche A. Hakim (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-4289) window functions give different results if star is used in inner query
Date Wed, 20 Jan 2016 03:00:44 GMT

    [ https://issues.apache.org/jira/browse/DRILL-4289?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15107885#comment-15107885
] 

Deneche A. Hakim commented on DRILL-4289:
-----------------------------------------

Here is the plan for the 1st query:
{noformat}
00-00    Screen
00-01      Project(position_id=[$0], count=[$1])
00-02        Project(position_id=[$0], count=[$1])
00-03          Window(window#0=[window(partition {0} order by [] range between UNBOUNDED PRECEDING
and UNBOUNDED FOLLOWING aggs [COUNT()])])
00-04            SelectionVectorRemover
00-05              Sort(sort0=[$0], dir0=[ASC])
00-06                Project(position_id=[$0])
00-07                  SelectionVectorRemover
00-08                    Sort(sort0=[$1], sort1=[$2], dir0=[ASC], dir1=[ASC])
00-09                      Project(position_id=[$1], employee_id=[$0], sub=[$2])
00-10                        Scan(groupscan=[EasyGroupScan [selectionRoot=file:/Users/hakim/MapR/data/windowData/b1.p2,
numFiles=1, columns=[`position_id`, `employee_id`, `sub`], files=[file:/Users/hakim/MapR/data/windowData/b1.p2/0.data.json]]])
{noformat}

 and the one for the 2nd query:
{noformat}
00-00    Screen
00-01      ProjectAllowDup(position_id=[$0], count=[$1])
00-02        Project($1=[$1], w0$o0=[$2])
00-03          Window(window#0=[window(partition {0} order by [] range between UNBOUNDED PRECEDING
and UNBOUNDED FOLLOWING aggs [COUNT()])])
00-04            SelectionVectorRemover
00-05              Sort(sort0=[$0], dir0=[ASC])
00-06                Project(T9¦¦*=[$0], $1=[ITEM($0, 'position_id')])
00-07                  SelectionVectorRemover
00-08                    Sort(sort0=[$1], sort1=[$2], dir0=[ASC], dir1=[ASC])
00-09                      Project(T9¦¦*=[$0], employee_id=[$1], sub=[$2])
00-10                        Scan(groupscan=[EasyGroupScan [selectionRoot=file:/Users/hakim/MapR/data/windowData/b1.p2,
numFiles=1, columns=[`*`], files=[file:/Users/hakim/MapR/data/windowData/b1.p2/0.data.json]]])
{noformat}

> window functions give different results if star is used in inner query
> ----------------------------------------------------------------------
>
>                 Key: DRILL-4289
>                 URL: https://issues.apache.org/jira/browse/DRILL-4289
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>    Affects Versions: 1.5.0
>            Reporter: Deneche A. Hakim
>         Attachments: b1p1tbl.json
>
>
> The following queries give different results, although they are similar:
> {noformat}
> SELECT position_id, COUNT(*) OVER w AS `count` FROM (SELECT position_id FROM `/b1p2tbl`
ORDER BY employee_id, sub) WINDOW w AS (PARTITION BY position_id);
> +--------------+--------+
> | position_id  | count  |
> +--------------+--------+
> | 1            | 10     |
> | 1            | 10     |
> | 1            | 10     |
> | 1            | 10     |
> | 1            | 10     |
> | 1            | 10     |
> | 1            | 10     |
> | 1            | 10     |
> | 1            | 10     |
> | 1            | 10     |
> | 2            | 10     |
> | 2            | 10     |
> | 2            | 10     |
> | 2            | 10     |
> | 2            | 10     |
> | 2            | 10     |
> | 2            | 10     |
> | 2            | 10     |
> | 2            | 10     |
> | 2            | 10     |
> +--------------+--------+
> {noformat}
> {noformat}
> SELECT position_id, COUNT(*) OVER w AS `count` FROM (SELECT * FROM dfs.data.`b1p2tbl`
ORDER BY employee_id, sub) WINDOW w AS (PARTITION BY position_id);
> +--------------+--------+
> | position_id  | count  |
> +--------------+--------+
> | 1            | 20     |
> | 1            | 20     |
> | 1            | 20     |
> | 1            | 20     |
> | 1            | 20     |
> | 1            | 20     |
> | 1            | 20     |
> | 1            | 20     |
> | 1            | 20     |
> | 1            | 20     |
> | 2            | 20     |
> | 2            | 20     |
> | 2            | 20     |
> | 2            | 20     |
> | 2            | 20     |
> | 2            | 20     |
> | 2            | 20     |
> | 2            | 20     |
> | 2            | 20     |
> | 2            | 20     |
> +--------------+--------+
> {noformat}
> the results of the second query are incorrect.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message