[jira] [Created] (TAJO-683) When ExprNormalizer visits a function expression, it should check whether the function has any parameters.

[Jihoon Son (JIRA)]

Jihoon Son created TAJO-683:
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             Summary: When ExprNormalizer visits a function expression, it 
should check whether the function has any parameters.
                 Key: TAJO-683
                 URL: https://issues.apache.org/jira/browse/TAJO-683
             Project: Tajo
          Issue Type: Bug
    Affects Versions: 0.8-incubating
            Reporter: Jihoon Son


See the title.
ExprNormalizer returns java.lang.NullPointerException for functions that don't 
have any parameters such as today().



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