[jira] [Created] (HIVE-22233) Wrong result with vectorized execution when column value is casted to TINYINT

["Ganesha Shreedhara (Jira)" <ji...@apache.org>]

Ganesha Shreedhara created HIVE-22233:
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             Summary: Wrong result with vectorized execution when column value is casted to TINYINT
                 Key: HIVE-22233
                 URL: https://issues.apache.org/jira/browse/HIVE-22233
             Project: Hive
          Issue Type: Bug
    Affects Versions: 3.1.1
            Reporter: Ganesha Shreedhara


Casting a column value to TINYINT is giving incorrect result when vectorized execution is enabled. This is only when the sub query as SUM/COUNT aggregation operations in IF condition.  

*Steps to reproduce:*

 
{code:java}
create table test(id int);
insert into test values (1);
SELECT CAST(col AS TINYINT) col_cast FROM ( SELECT IF(SUM(1) > 0, 1, 0) col FROM test) x;
{code}
 

*Result:*
{code:java}
0{code}
*Expected result:*
{code:java}
1{code}
 

We get the expected result when hive.vectorized.execution.enabled is disabled. 

We also get the expected result when we don't CAST or don't have SUM/COUNT aggregation in IF condition.

The following queries give correct result when vectorized execution is enabled.  

 

 
{code:java}
SELECT CAST(col AS INT) col_cast FROM ( SELECT IF(SUM(1) > 0, 1, 0) col FROM test) x;
SELECT col FROM ( SELECT IF(SUM(1) > 0, 1, 0) col FROM test) x;
SELECT CAST(col AS INT) col_cast FROM ( SELECT IF(2 > 1, 1, 0) col FROM test) x;
SELECT CAST(col AS INT) col_cast FROM ( SELECT IF(true, 1, 0) col FROM test) x;
{code}
 

 

This issue is only when we use *CAST(col AS TINYINT)* along with *IF(SUM(1) > 0, 1, 0) or IF(COUNT(1) > 0, 1, 0)* in sub query. 

 

 



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