[jira] [Created] (FLINK-18164) null <> 'str' should be true

[Shang Yuanchun (Jira)]

Benchao Li created FLINK-18164:
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             Summary: null <> 'str' should be true
                 Key: FLINK-18164
                 URL: https://issues.apache.org/jira/browse/FLINK-18164
             Project: Flink
          Issue Type: Bug
          Components: Table SQL / API
            Reporter: Benchao Li


Currently, if we compare null with other literals, the result will always be false.
It's because the code gen always gives a default value (false) for the result. And I think it's a bug if `null <> 'str'` is false.

It's reported from user-zh: http://apache-flink.147419.n8.nabble.com/flink-sql-null-false-td3640.html

CC [~jark] [~ykt836]



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