Carter Shanklin created HIVE-15985:
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             Summary: Allow the symmetric and asymmetric keywords to the 
between predicate
                 Key: HIVE-15985
                 URL: https://issues.apache.org/jira/browse/HIVE-15985
             Project: Hive
          Issue Type: Sub-task
            Reporter: Carter Shanklin


When testing whether a number c3 is between c1 and c2, sometimes you don't know 
when c1 <= c2. In this case it is useful to be able to run "c3 between 
symmetric c1 and c2" which handles the case of c1 > c2. SQL allows the keywords 
of symmetric and asymmetric to be defined, with asymmetric used if no keyword 
is supplied. SQL standard reference: section 8.3



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