Yi Zhang created HIVE-10142:
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             Summary: Calculating formula with each row's value to current 
row's value in Windowing function
                 Key: HIVE-10142
                 URL: https://issues.apache.org/jira/browse/HIVE-10142
             Project: Hive
          Issue Type: New Feature
          Components: PTF-Windowing
    Affects Versions: 1.0.0
            Reporter: Yi Zhang


For analytics with windowing function, the calculation formula sometimes needs 
to perform over each row's value against current tow's value. The decay value 
is a good example, such as sums of value with a decay function based on 
difference of timestamp between each row and current row.



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