[jira] [Created] (DRILL-5002) Using hive's date functions on top of date column in parquet gives wrong results

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

Rahul Challapalli created DRILL-5002:
----------------------------------------

             Summary: Using hive's date functions on top of date column in parquet gives wrong results
                 Key: DRILL-5002
                 URL: https://issues.apache.org/jira/browse/DRILL-5002
             Project: Apache Drill
          Issue Type: Bug
          Components: Functions - Hive, Storage - Parquet
            Reporter: Rahul Challapalli
            Priority: Critical


git.commit.id.abbrev=190d5d4

Wrong Result 1 :
{code}
select l_shipdate, `month`(l_shipdate) from cp.`tpch/lineitem.parquet` where l_shipdate = date '1994-02-01' limit 2;
+-------------+---------+
| l_shipdate  | EXPR$1  |
+-------------+---------+
| 1994-02-01  | 1       |
| 1994-02-01  | 1       |
+-------------+---------+
{code}

Wrong Result 2 : 
{code}
select l_shipdate, `day`(l_shipdate) from cp.`tpch/lineitem.parquet` where l_shipdate = date '1998-06-02' limit 2;
+-------------+---------+
| l_shipdate  | EXPR$1  |
+-------------+---------+
| 1998-06-02  | 1       |
| 1998-06-02  | 1       |
+-------------+---------+
{code}

Correct Result :
{code}
select l_shipdate, `month`(l_shipdate) from cp.`tpch/lineitem.parquet` where l_shipdate = date '1998-06-02' limit 2;
+-------------+---------+
| l_shipdate  | EXPR$1  |
+-------------+---------+
| 1998-06-02  | 6       |
| 1998-06-02  | 6       |
+-------------+---------+
{code}

It looks like we are getting wrong results when the 'day' is '01'. I only tried month and day hive functions....but wouldn't be surprised if they have similar issues too.



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