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  1. Teiid
  2. TEIID-4237

INNER JOIN returns incorrect results

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    • Steps to Reproduce:
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      Run the following query on teiid and mysql:

      select avg(t1.a) from 
          (select 3 as a, 3 as b union all
          select 1 as a, 1 as b union all
          select 3 as a, 3 as b) as t1 
      join (select 1 as a, 1 as b union all
          select 1 as a, 1 as b union all
          select 2 as a, 2 as b union all
          select 2 as a, 2 as b union all
          select 3 as a, 3 as b union all
          select 3 as a, 3 as b) as t2 on t1.a=t2.a
      

      and compare gotten results.

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      Run the following query on teiid and mysql: select avg (t1. a ) from ( select 3 as a , 3 as b union all select 1 as a , 1 as b union all select 3 as a , 3 as b) as t1 join ( select 1 as a , 1 as b union all select 1 as a , 1 as b union all select 2 as a , 2 as b union all select 2 as a , 2 as b union all select 3 as a , 3 as b union all select 3 as a , 3 as b) as t2 on t1. a =t2. a and compare gotten results.

      Description

      Running the following query:

      select avg(t1.a) from 
      	(select 3 as a, 3 as b union all
      	select 1 as a, 1 as b union all
      	select 3 as a, 3 as b) as t1 
      join (select 1 as a, 1 as b union all
      	select 1 as a, 1 as b union all
      	select 2 as a, 2 as b union all
      	select 2 as a, 2 as b union all
      	select 3 as a, 3 as b union all
      	select 3 as a, 3 as b) as t2 on t1.a=t2.a
      

      on teiid causes incorrect result: 2 in comparing with mysql which returns 2.333.

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            Assignee:
            shawkins Steven Hawkins
            Reporter:
            dalex005 Dmitrii Pogorelov
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              Created:
              Updated:
              Resolved: