[MCOL-239] DBT3 query 8 returned an empty result set Created: 2016-07-01  Updated: 2016-09-02  Resolved: 2016-09-02

Status: Closed
Project: MariaDB ColumnStore
Component/s: ExeMgr
Affects Version/s: 1.0.1
Fix Version/s: 1.0.2

Type: Bug Priority: Critical
Reporter: Daniel Lee (Inactive) Assignee: Unassigned
Resolution: Fixed Votes: 0
Labels: None

Issue Links:
PartOf
is part of MCOL-280 Beta issues Closed

 Description   

mscadmin> getsoft
getsoftwareinfo Fri Jul 1 18:33:11 2016

Name : mariadb-columnstore-platform
Version : 1.0
Release : 1
Architecture: x86_64
Install Date: Fri 24 Jun 2016 07:28:00 PM UTC

Create a DBT3 (TPCH) database and load 1gb of data

execute the query #8

select
o_year,
sum(case
when nation = 'UNITED STATES' then volume
else 0
end) / sum(volume) as mkt_share
from
(
select
year(o_orderdate) as o_year,
l_extendedprice * (1 - l_discount) as volume,
n2.n_name as nation
from
part,
supplier,
lineitem,
orders,
customer,
nation n1,
nation n2,
region
where
p_partkey = l_partkey
and s_suppkey = l_suppkey
and l_orderkey = o_orderkey
and o_custkey = c_custkey
and c_nationkey = n1.n_nationkey
and n1.n_regionkey = r_regionkey
and r_name = 'AMERICA'
and s_nationkey = n2.n_nationkey
and o_orderdate between date('1995-01-01') and date ('1996-12-31')
and p_type = 'LARGE PLATED COPPER'
) as all_nations
group by
o_year
order by
o_year;

The same query on InnoDB returned:

------------------+

o_year mkt_share

------------------+

1995 0.04715849
1996 0.05004456

------------------+
2 rows in set (54.77 sec)



 Comments   
Comment by Daniel Lee (Inactive) [ 2016-09-02 ]

The empty resultset issue was caused by the bug described in MCOL-281.

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