[jira] [Created] (DRILL-3191) Provide a function which converts optional fields into required ones

["Rahul Challapalli (JIRA)" <ji...@apache.org>]

Rahul Challapalli created DRILL-3191:
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             Summary: Provide a function which converts optional fields into required ones
                 Key: DRILL-3191
                 URL: https://issues.apache.org/jira/browse/DRILL-3191
             Project: Apache Drill
          Issue Type: Improvement
          Components: Functions - Drill
            Reporter: Rahul Challapalli
            Assignee: Rahul Challapalli


commit # bd8ac4fca03ad5043bca27fbc7e0dec5a35ac474

Drill currently reads data using nullable column types by default. It would be helpful if I can convert a nullable type into a required type before writing out to a parquet file.

{code}
create table req_data as select make_required(d.col1) from `data.json` d;
{code}



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