benj created DRILL-7246:
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Summary: DESCRIBE on Parquet File
Key: DRILL-7246
URL: https://issues.apache.org/jira/browse/DRILL-7246
Project: Apache Drill
Issue Type: Improvement
Components: Storage - Parquet
Affects Versions: 1.16.0
Reporter: benj
It will be nice if it's possible to use DESCRIBE on Parquet File.
Example :
{code:sql}
DESCRIBE dfs.tmp.`test_parquet`;
+-------------------+-----------+-------------+
| COLUMN_NAME | DATA_TYPE | IS_NULLABLE |
+-------------------+-----------+-------------+
| MyColumn | INT | YES |
| AnotherColumn | DATE | NO |
| AdditionnalColumn | VARCHAR | YES |
+-------------------+-----------+-------------+
{code}
And more why not propose this possibility for any file (in the case of the CSV,
DATA_TYPE will be VARCHAR and IS_NULLABLE YES) - if it's a little bit useless,
this would at least list the available columns.
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