Keuntae Park created TAJO-770:
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Summary: Coalesce() should support one argument case
Key: TAJO-770
URL: https://issues.apache.org/jira/browse/TAJO-770
Project: Tajo
Issue Type: Bug
Reporter: Keuntae Park
Assignee: Keuntae Park
Priority: Trivial
As mentioned in the comment of TAJO-746,
current coalesce() function cannot handle one argument case.
For example, coalesce('a') results in NoSuchFunctionException.
Even though this usage case is very rare, it should be fixed.
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