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From "Xingcan Cui (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-10049) Unify the processing logic for NULL arguments in SQL built-in functions
Date Fri, 03 Aug 2018 14:40:00 GMT
Xingcan Cui created FLINK-10049:
-----------------------------------

             Summary: Unify the processing logic for NULL arguments in SQL built-in functions
                 Key: FLINK-10049
                 URL: https://issues.apache.org/jira/browse/FLINK-10049
             Project: Flink
          Issue Type: Improvement
          Components: Table API &amp; SQL
            Reporter: Xingcan Cui


Currently, the built-in functions treat NULL arguments in different ways. E.g., ABS(NULL)
returns NULL, while LOG10(NULL) throws an NPE. The general SQL-way of handling NULL values
should be that if one argument is NULL the result is NULL. We should unify the processing
logic for that.



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