sascha-coenen opened a new issue #9415: SQL: NVL does not work with empty strings as documentation states it would URL: https://github.com/apache/druid/issues/9415 ### Affected Version 0.16.0 and 0.17.0 ### Description NVL does NOT work with empty strings ``` SELECT NVL('something', 'fallback') AS tst1, NVL(null, 'fallback') AS tst2, NVL('', 'fallback') AS tst3 ``` this yields "something", "fallback", "" According to the documentation, the third projection should also yield the output "fallback" > NVL(expr,expr-for-null) | Returns 'expr-for-null' if 'expr' is null (or empty string for string type).
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