Guoliang Sun created KYLIN-6021:
-----------------------------------

             Summary: [Gluten] Gluten query on Hive external tables in CSV 
format throws an error
                 Key: KYLIN-6021
                 URL: https://issues.apache.org/jira/browse/KYLIN-6021
             Project: Kylin
          Issue Type: Improvement
    Affects Versions: 5.0.0
            Reporter: Guoliang Sun
         Attachments: image-2025-02-19-14-55-57-996.png

SQL
{code:java}
SELECT CASE c_name WHEN 'a' THEN 'aa' WHEN 'b' THEN 'bb' ELSE c_name END, CASE 
c_name WHEN c_name = 'a' THEN 'aa' WHEN c_name = 'b' THEN 'bb' ELSE c_name END, 
COALESCE(NULL, c_name), NULLIF(1, 1) FROM SSB_QUARD.CUSTOMER AS 
Conditional_Functions {code}
Exception

!image-2025-02-19-14-55-57-996.png|width=415,height=298!



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