[jira] [Created] (HIVE-21781) Vectorization: Incomplete vectorization of "or false" with CBO off

["Gopal V (JIRA)" <ji...@apache.org>]

Gopal V created HIVE-21781:
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             Summary: Vectorization: Incomplete vectorization of "or false" with CBO off
                 Key: HIVE-21781
                 URL: https://issues.apache.org/jira/browse/HIVE-21781
             Project: Hive
          Issue Type: Bug
          Components: Logical Optimizer
            Reporter: Gopal V


{code}
create temporary table foo (x int) ;
insert into foo values(1),(2),(3),(4),(5);
set hive.explain.user=false;

explain vectorization detail select count(case when (x=1 or false) then 1 else 0 end ) from foo
{code}

{code}
|                     Group By Operator              |
|                       aggregations: count(CASE WHEN (((x = 1) or false)) THEN (1) ELSE (0) END) |
|                       Group By Vectorization:      |
|                           aggregators: VectorUDAFCount(IfExprLongScalarLongScalar(col 3:boolean, val 1, val 0)(children: VectorUDFAdaptor(((x = 1) or false))(children: LongColEqualLongScalar(col 0:int, val 1) -> 2:boolean) -> 3:boolean) -> 4:int) -> bigint |
|                           className: VectorGroupByOperator |
{code}

The pass-through Calcite fixes this.

{code}
| OPTIMIZED SQL: SELECT COUNT(CASE WHEN `x` = 1 THEN 1 ELSE 0 END) AS `$f0` |
| FROM `default`.`foo`     
{code}



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