[jira] [Created] (HIVE-8159) CBO: bail from Optiq planning if a Select list contains multiple references to the same name

[Ashutosh Chauhan (JIRA)]

Ashutosh Chauhan created HIVE-8159:
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             Summary: CBO: bail from Optiq planning if a Select list contains 
multiple references to the same name
                 Key: HIVE-8159
                 URL: https://issues.apache.org/jira/browse/HIVE-8159
             Project: Hive
          Issue Type: Sub-task
          Components: CBO
            Reporter: Harish Butani
            Assignee: Harish Butani
             Fix For: 0.14.0


Optiq explicitly disallows this:
{code}
select x, x from t1
{code}

This is allowed in Hive (and also in mysql). Will check in Postgres. For now 
bailing from Optiq planning if we see this. Will file an Optiq issue. 



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