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Posted to issues@kylin.apache.org by "weibin0516 (JIRA)" <ji...@apache.org> on 2019/07/03 02:32:00 UTC

[jira] [Created] (KYLIN-4068) Automatically add limit has bug

weibin0516 created KYLIN-4068:
---------------------------------

             Summary: Automatically add limit has bug
                 Key: KYLIN-4068
                 URL: https://issues.apache.org/jira/browse/KYLIN-4068
             Project: Kylin
          Issue Type: Bug
          Components: Query Engine
    Affects Versions: v2.6.2
            Reporter: weibin0516
            Assignee: weibin0516



{code:sql}
SELECT E_Name FROM Employees_China
UNION
SELECT E_Name FROM Employees_USA

{code}

will convert to 


{code:sql}
SELECT E_Name FROM Employees_China
UNION
SELECT E_Name FROM Employees_USA
LIMIT 50000
{code}


This limit is not working on the result of union, but on SELECT E_Name FROM Employees_USA.
We should use a more secure way to achieve the limit effect.



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