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https://issues.apache.org/jira/browse/DRILL-2376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14509462#comment-14509462
]
Victoria Markman commented on DRILL-2376:
-----------------------------------------
Another case, works if hash aggregation is disabled:
{code}
0: jdbc:drill:schema=dfs> select t1.a1,
. . . . . . . . . . . . > t1.b1,
. . . . . . . . . . . . > count(distinct t1.c1) as distinct_c1,
. . . . . . . . . . . . > count(distinct t2.c2) as distinct_c2,
. . . . . . . . . . . . > sum(t1.a1) as sum_a1,
. . . . . . . . . . . . > count(t1.c1) as count_a1,
. . . . . . . . . . . . > count(*) as count_star
. . . . . . . . . . . . > from
. . . . . . . . . . . . > t1,
. . . . . . . . . . . . > t2
. . . . . . . . . . . . > where
. . . . . . . . . . . . > t1.a1 = t2.a2 and t1.b1 = t2.b2
. . . . . . . . . . . . > group by
. . . . . . . . . . . . > t1.a1,
. . . . . . . . . . . . > t1.b1,
. . . . . . . . . . . . > t2.a2,
. . . . . . . . . . . . > t2.b2
. . . . . . . . . . . . > order by
. . . . . . . . . . . . > t1.a1,
. . . . . . . . . . . . > t1.b1,
. . . . . . . . . . . . > t2.a2,
. . . . . . . . . . . . > t2.b2
. . . . . . . . . . . . > ;
+------------+------------+-------------+-------------+------------+------------+------------+
| a1 | b1 | distinct_c1 | distinct_c2 | sum_a1 | count_a1
| count_star |
+------------+------------+-------------+-------------+------------+------------+------------+
Query failed: SYSTEM ERROR: Hash aggregate does not support schema changes
Fragment 0:0
[10ee2422-d13c-4405-a4b6-a62358f72995 on atsqa4-134.qa.lab:31010]
(org.apache.drill.exec.exception.SchemaChangeException) Hash aggregate does
not support schema changes
{code}
copy/paste reproduction
{code}
select t1.a1,
t1.b1,
count(distinct t1.c1) as distinct_c1,
count(distinct t2.c2) as distinct_c2,
sum(t1.a1) as sum_a1,
count(t1.c1) as count_a1,
count(*) as count_star
from
t1,
t2
where
t1.a1 = t2.a2 and t1.b1 = t2.b2
group by
t1.a1,
t1.b1,
t2.a2,
t2.b2
order by
t1.a1,
t1.b1,
t2.a2,
t2.b2
;
{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}
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