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https://issues.apache.org/jira/browse/HIVE-12435?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Takahiko Saito updated HIVE-12435:
----------------------------------
Description:
Run the following query:
{noformat}
create table count_case_groupby (key string, bool boolean) STORED AS orc;
insert into table count_case_groupby values ('key1', true),('key2',
false),('key3', NULL),('key4', false),('key5',NULL);
{noformat}
The table contains the following:
{noformat}
key1 true
key2 false
key3 NULL
key4 false
key5 NULL
{noformat}
The below query returns:
{noformat}
SELECT key, COUNT(CASE WHEN bool THEN 1 WHEN NOT bool THEN 0 ELSE NULL END) AS
cnt_bool0_ok FROM count_case_groupby GROUP BY key;
key1 1
key2 1
key3 1
key4 1
key5 1
{noformat}
while it expects the following results:
{noformat}
key1 1
key2 1
key3 0
key4 1
key5 0
{noformat}
The query works with hive ver 1.2. Also it works when a table is not orc format.
Also even if it's an orc table, when vectorization is disabled, the query works.
was:
Run the following query:
{noformat}
create table count_case_groupby (key string, bool boolean) STORED AS orc;
insert into table count_case_groupby values ('key1', true),('key2',
false),('key3', NULL),('key4', false),('key5',NULL);
{noformat}
The table contains the following:
{noformat}
key1 true
key2 false
key3 NULL
key4 false
key5 NULL
{noformat}
The below query returns:
{noformat}
SELECT key, COUNT(CASE WHEN bool THEN 1 WHEN NOT bool THEN 0 ELSE NULL END) AS
cnt_bool0_ok FROM count_case_groupby GROUP BY key;
key1 1
key2 1
key3 1
key4 1
key5 1
{noformat}
while it expects the following results:
{noformat}
key1 1
key2 1
key3 0
key4 1
key5 0
{noformat}
The query works with hive ver 1.2. Also it works when a table is not orc format.
> SELECT COUNT(CASE WHEN...) GROUPBY returns 1 for 'NULL' in a case of ORC and
> vectorization is enabled.
> ------------------------------------------------------------------------------------------------------
>
> Key: HIVE-12435
> URL: https://issues.apache.org/jira/browse/HIVE-12435
> Project: Hive
> Issue Type: Bug
> Components: ORC
> Affects Versions: 2.0.0
> Reporter: Takahiko Saito
>
> Run the following query:
> {noformat}
> create table count_case_groupby (key string, bool boolean) STORED AS orc;
> insert into table count_case_groupby values ('key1', true),('key2',
> false),('key3', NULL),('key4', false),('key5',NULL);
> {noformat}
> The table contains the following:
> {noformat}
> key1 true
> key2 false
> key3 NULL
> key4 false
> key5 NULL
> {noformat}
> The below query returns:
> {noformat}
> SELECT key, COUNT(CASE WHEN bool THEN 1 WHEN NOT bool THEN 0 ELSE NULL END)
> AS cnt_bool0_ok FROM count_case_groupby GROUP BY key;
> key1 1
> key2 1
> key3 1
> key4 1
> key5 1
> {noformat}
> while it expects the following results:
> {noformat}
> key1 1
> key2 1
> key3 0
> key4 1
> key5 0
> {noformat}
> The query works with hive ver 1.2. Also it works when a table is not orc
> format.
> Also even if it's an orc table, when vectorization is disabled, the query
> works.
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