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From "Abhishek Girish (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-3094) TPCH query 15 returns non-deterministic result
Date Fri, 15 May 2015 00:41:00 GMT
Abhishek Girish created DRILL-3094:
--------------------------------------

             Summary: TPCH query 15 returns non-deterministic result
                 Key: DRILL-3094
                 URL: https://issues.apache.org/jira/browse/DRILL-3094
             Project: Apache Drill
          Issue Type: Bug
          Components: Query Planning & Optimization
    Affects Versions: 1.0.0
            Reporter: Abhishek Girish
            Assignee: Aman Sinha


Query 15:
{code:sql}
create or replace view revenue0 (supplier_no, total_revenue) as
  select
    l_suppkey,
    sum(l_extendedprice * (1 - l_discount))
  from
    lineitem
  where
    l_shipdate >= date '1993-05-01'
    and l_shipdate < date '1993-05-01' + interval '3' month
  group by
    l_suppkey;

select
  s.s_suppkey,
  s.s_name,
  s.s_address,
  s.s_phone,
  r.total_revenue
from
  supplier s,
  revenue0 r
where
  s.s_suppkey = r.supplier_no
  and r.total_revenue = (
    select
      max(total_revenue)
    from
      revenue0
  )
order by
  s.s_suppkey;
{code}

Drill sometimes returns 0 rows and other times 1 row. Postgres always returns 1 row. 

This is possibly due to the non-deterministic comparison of floating point values. 
{code}total_revenue (calculated as sum(l_extendedprice * (1 - l_discount))){code} is compared
with {code}max(total_revenue){code}



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