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https://issues.apache.org/jira/browse/HIVE-13602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15257234#comment-15257234
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Pengcheng Xiong commented on HIVE-13602:
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[~nemon], I tried the following query (I think it should be the same as yours)
{code}
select p_brand,p_type, p_size,count(distinct ps_suppkey) as supplier_cnt
from partsupp, part
where p_partkey = ps_partkey and p_brand <> 'Brand#34' and p_type not like
'ECONOMY BRUSHED%' and p_size in (22, 14, 27, 49, 21, 33, 35, 28)
and partsupp.ps_suppkey not in (select s_suppkey from supplier where s_comment
like '%Customer%Complaints%' )
group by p_brand, p_type, p_size
order by supplier_cnt desc, p_brand, p_type, p_size;
{code}
on Postgres. It returns *24585* rows...
> TPCH q16 return wrong result when CBO is on
> -------------------------------------------
>
> Key: HIVE-13602
> URL: https://issues.apache.org/jira/browse/HIVE-13602
> Project: Hive
> Issue Type: Bug
> Components: CBO, Logical Optimizer
> Affects Versions: 1.3.0, 2.0.0, 1.2.2
> Reporter: Nemon Lou
> Assignee: Pengcheng Xiong
> Attachments: calcite_cbo_bad.out, calcite_cbo_good.out,
> explain_cbo_bad_part1.out, explain_cbo_bad_part2.out,
> explain_cbo_bad_part3.out, explain_cbo_good(rewrite)_part1.out,
> explain_cbo_good(rewrite)_part2.out, explain_cbo_good(rewrite)_part3.out
>
>
> Running tpch with factor 2,
> q16 returns 1,160 rows when CBO is on,
> while returns 59,616 rows when CBO is off.
> See attachment for detail .
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