[jira] [Created] (DRILL-5742) CONVERT_FROM_JSON on a non-existing column in a file throws null pointer exception

["Prasad Nagaraj Subramanya (JIRA)" <ji...@apache.org>]

Prasad Nagaraj Subramanya created DRILL-5742:
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             Summary: CONVERT_FROM_JSON on a non-existing column in a file throws null pointer exception	
                 Key: DRILL-5742
                 URL: https://issues.apache.org/jira/browse/DRILL-5742
             Project: Apache Drill
          Issue Type: Bug
    Affects Versions: 1.11.0
            Reporter: Prasad Nagaraj Subramanya


Query using CONVERT_FROM_JSON on a non-existing field.
{code}
SELECT CONVERT_FROM(columns[3], 'JSON') as col1 FROM dfs.`file1.tbl`;
{code}

The file above has only 3 columns.

Throws the below exception
{code}
Error: SYSTEM ERROR: NullPointerException

Fragment 0:0
{code}

Expected behavior - The query should return null, which is the behavior if we scan a non-existing field.



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