Details

Test

Status: Resolved

Major

Resolution: Fixed

2.3.0

None
Description
HIVE16110 introduced some issues when using SUM aggregations with WHEN clause.
As far as I can see, there is no separate qtests for validating that, vectorized_case is quite close, but not the same.
The test case would be:
set hive.vectorized.execution.enabled=false; drop table if exists vectorization_sum_if_when_a; drop table if exists vectorization_sum_if_when_b; create table vectorization_sum_if_when_a (x int) stored as orc; insert into table vectorization_sum_if_when_a values (0), (1), (0), (NULL), (NULL), (NULL), (NULL), (NULL), (NULL), (NULL); create table vectorization_sum_if_when_b (x int) stored as orc; insert into table vectorization_sum_if_when_b select least(t1.x + t2.x + t3.x + t4.x, 1) from vectorization_sum_if_when_a t1, vectorization_sum_if_when_a t2, vectorization_sum_if_when_a t3, vectorization_sum_if_when_a t4; select count(*), x from vectorization_sum_if_when_b group by x; select sum(IF(x is null, 1, 0)), count(1) from vectorization_sum_if_when_b; select sum(IF(x=1, 1, 0)), count(1) from vectorization_sum_if_when_b; select sum((case WHEN x = 1 THEN 1 else 0 end)) from vectorization_sum_if_when_b; select sum((case WHEN x = 1 THEN 1 else 0 end)), sum((case WHEN x = 1 THEN 1 when x is null then 0 else 0 end)) from vectorization_sum_if_when_b; set hive.vectorized.execution.enabled=true; select sum(IF(x is null, 1, 0)), count(1) from vectorization_sum_if_when_b; select sum(IF(x=1, 1, 0)), count(1) from vectorization_sum_if_when_b; select sum((case WHEN x = 1 THEN 1 else 0 end)) from vectorization_sum_if_when_b; select sum((case WHEN x = 1 THEN 1 else 0 end)), sum((case WHEN x = 1 THEN 1 when x is null then 0 else 0 end)) from vectorization_sum_if_when_b;
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Attachments
Issue Links
 is related to

HIVE16110 Vectorization: Support 2 Value CASE WHEN instead of fall back to VectorUDFAdaptor
 Resolved