Steve Carlin created HIVE-26683:
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Summary: Sum over window produces 0 when row contains null
Key: HIVE-26683
URL: https://issues.apache.org/jira/browse/HIVE-26683
Project: Hive
Issue Type: Bug
Components: HiveServer2
Reporter: Steve Carlin
Ran the following sql:
{code:java}
create table sum_window_test_small (id int, tinyint_col tinyint);
insert into sum_window_test_small values (5,5), (10, NULL), (11,1);
select id,
tinyint_col,
sum(tinyint_col) over (order by id nulls last rows between 1 following and 1
following)
from sum_window_test_small order by id;
select id,
tinyint_col,
sum(tinyint_col) over (order by id nulls last rows between current row and 1
following)
from sum_window_test_small order by id;
{code}
The result is
{code:java}
+-----+--------------+---------------+
| id | tinyint_col | sum_window_0 |
+-----+--------------+---------------+
| 5 | 5 | 0 |
| 10 | NULL | 1 |
| 11 | 1 | NULL |
+-----+--------------+---------------+{code}
The first row should have the sum as NULL
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