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Posted to derby-dev@db.apache.org by "Lukas Eder (JIRA)" <ji...@apache.org> on 2017/07/05 12:10:00 UTC

[jira] [Created] (DERBY-6947) Simple query runs forever

Lukas Eder created DERBY-6947:
---------------------------------

             Summary: Simple query runs forever
                 Key: DERBY-6947
                 URL: https://issues.apache.org/jira/browse/DERBY-6947
             Project: Derby
          Issue Type: Bug
          Components: SQL
    Affects Versions: 10.13.1.1
            Reporter: Lukas Eder


select 
  X1.A as A1, 
  X2.A as A2
from (
  select *
  from (
    select 1 as A
    from SYSIBM.SYSDUMMY1
  ) x
  union all 
  select *
  from (
    select 2 as A
    from SYSIBM.SYSDUMMY1
  ) x
) as X1
  join (
    select *
    from (
      select 2 as A
      from SYSIBM.SYSDUMMY1
    ) x
    union all 
    select *
    from (
      select 3 as A
      from SYSIBM.SYSDUMMY1
    ) x
  ) as X2
  on X1.A = X2.A
order by A1



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