[
https://issues.apache.org/jira/browse/DRILL-2376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14509461#comment-14509461
]
Abhishek Girish commented on DRILL-2376:
----------------------------------------
Looks like it is not dependent on format. Issue seen on parquet as well.
However, on disabling HashAgg, the issue is not seen.
{code:sql}
> alter session set `planner.enable_hashagg`=false;
+------------+------------+
| ok | summary |
+------------+------------+
| true | planner.enable_hashagg updated. |
+------------+------------+
1 row selected (0.062 seconds)
SELECT x
FROM
(SELECT Sum(ss_ext_sales_price) x
FROM store_sales
UNION ALL
SELECT Sum(cs_ext_sales_price) x
FROM catalog_sales) tmp
GROUP BY x;
+------------+
| x |
+------------+
| 3.658019159349976E9 |
| 5.26520707451017E9 |
+------------+
2 rows selected (0.472 seconds)
{code}
> UNION ALL on Aggregates with GROUP BY returns incomplete results
> ----------------------------------------------------------------
>
> Key: DRILL-2376
> URL: https://issues.apache.org/jira/browse/DRILL-2376
> Project: Apache Drill
> Issue Type: Bug
> Components: Query Planning & Optimization
> Affects Versions: 0.9.0
> Reporter: Abhishek Girish
> Assignee: Sean Hsuan-Yi Chu
> Fix For: 0.8.0
>
>
> The following query returns incomplete results:
> {code:sql}
> select x
> from
> (SELECT Sum(ss_ext_sales_price) x
> FROM store_sales
> UNION ALL
> SELECT Sum(cs_ext_sales_price) x
> FROM catalog_sales) tmp
> GROUP BY x;
> Results from Drill:
> +------------+
> | x |
> +------------+
> | 3658019159.35 |
> +------------+
> 1 row selected (3.474 seconds)
> Results from Postgres:
> x
> ---------------
> 5265207074.51
> 3658019159.35
> (2 rows)
> {code}
> Removing GROUP BY returns the right results:
> {code:sql}
> select x
> from
> (SELECT Sum(ss_ext_sales_price) x
> FROM store_sales
> UNION ALL
> SELECT Sum(cs_ext_sales_price) x
> FROM catalog_sales) tmp;
> Results from Drill:
> +------------+
> | x |
> +------------+
> | 5265207074.51 |
> | 3658019159.35 |
> +------------+
> {code}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
