Xiaowei Wang created HIVE-14918:
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Summary: Function concat_ws get a wrong value
Key: HIVE-14918
URL: https://issues.apache.org/jira/browse/HIVE-14918
Project: Hive
Issue Type: Bug
Components: UDF
Affects Versions: 2.0.1, 2.1.0, 2.0.0, 1.1.1
Reporter: Xiaowei Wang
Assignee: Xiaowei Wang
Priority: Critical
Fix For: 2.1.0
FROM src INSERT OVERWRITE TABLE dest1 SELECT 'abc', 'xyz', '8675309' WHERE
src.key = 86;
SELECT concat_ws('.',NULL) FROM dest1 ;
The result is a empty string "",but I think it should be return NULL .
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