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Posted to issues@drill.apache.org by "Abhishek Girish (JIRA)" <ji...@apache.org> on 2015/04/23 02:03:38 UTC
[jira] [Commented] (DRILL-2438) Query on views with Avg on integer
column returns wrong result
[ https://issues.apache.org/jira/browse/DRILL-2438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14508184#comment-14508184 ]
Abhishek Girish commented on DRILL-2438:
----------------------------------------
Verified on Git.Commit.ID a0a1930 (April 21 build)
{code:sql}
SELECT i_item_id, avg(i_manufact_id) agg1
FROM item
GROUP BY i_item_id
ORDER BY i_item_id
LIMIT 5;
+------------+------------+
| i_item_id | agg1 |
+------------+------------+
| AAAAAAAAAAABAAAA | 152.33333333333334 |
| AAAAAAAAAAACAAAA | 373.0 |
| AAAAAAAAAAAEAAAA | 251.0 |
| AAAAAAAAAABAAAAA | 198.66666666666666 |
| AAAAAAAAAABBAAAA | 636.0 |
+------------+------------+
5 rows selected (0.629 seconds)
{code}
The issue is now resolved.
> Query on views with Avg on integer column returns wrong result
> --------------------------------------------------------------
>
> Key: DRILL-2438
> URL: https://issues.apache.org/jira/browse/DRILL-2438
> Project: Apache Drill
> Issue Type: Bug
> Components: Query Planning & Optimization
> Affects Versions: 0.8.0
> Reporter: Abhishek Girish
> Assignee: Mehant Baid
> Priority: Critical
> Fix For: 0.9.0
>
> Attachments: DRILL-2438.patch
>
>
> Git.Commit.ID: b3bdc27 (Mar 10)
> Average on an integer column returns an (inaccurate) integer value, instead of an (accurate) decimal value.
> *The following query returns wrong results:*
> {code:sql}
> SELECT i_item_id, avg(i_manufact_id) agg1
> FROM item
> GROUP BY i_item_id
> ORDER BY i_item_id
> LIMIT 5;
> +------------+------------+
> | i_item_id | agg1 |
> +------------+------------+
> | AAAAAAAAAAABAAAA | 152 |
> | AAAAAAAAAAACAAAA | 187 |
> | AAAAAAAAAAAEAAAA | 251 |
> | AAAAAAAAAABAAAAA | 199 |
> | AAAAAAAAAABBAAAA | 636 |
> +------------+------------+
> 5 rows selected (0.324 seconds)
> {code}
> *Postgres results:*
> {code:sql}
> # SELECT i_item_id, avg(i_manufact_id) agg1
> FROM item
> GROUP BY i_item_id
> ORDER BY i_item_id
> LIMIT 5;
> i_item_id | agg1
> ------------------+----------------------
> AAAAAAAAAAABAAAA | 152.3333333333333333
> AAAAAAAAAAACAAAA | 373.0000000000000000
> AAAAAAAAAAAEAAAA | 251.0000000000000000
> AAAAAAAAAABAAAAA | 198.6666666666666667
> AAAAAAAAAABBAAAA | 636.0000000000000000
> (5 rows)
> {code}
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