Ramana Inukonda Nagaraj created DRILL-840:
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             Summary: CTAS writing nulls as 0s
                 Key: DRILL-840
                 URL: https://issues.apache.org/jira/browse/DRILL-840
             Project: Apache Drill
          Issue Type: Bug
          Components: Storage - Writer
            Reporter: Ramana Inukonda Nagaraj


Steps to repro:

CTAS from a json file with missing fields. Ie null values
Select returns the correct value.
0: jdbc:drill:schema=dfs.drillTestDir> select * from 
`json_storage/employeeObjectMissingField.json`;
+------------+------------+------------+------------+------------+------------+
|   first    |    last    |    age     |    sex     |   salary   | registered |
+------------+------------+------------+------------+------------+------------+
| Jimmy      | James      | 29         | M          | 6300.1     | false      |
| anderson   | carr       | null       | M          | 6300.1     | false      |
+------------+------------+------------+------------+------------+------------+

CREATE TABLE CTAS_jsonmissingfield AS select * from 
`json_storage/employeeObjectMissingField.json`

select * from CTAS_jsonmissingfield returns

anderson        carr    0       M       6300.1  false





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