[DRILL-1889] when 'select *' is used along with an order by on length of a column, Drill is adding the computed length to the list of columns

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 0.8.0
• Component/s: Query Planning & Optimization
• Assignee: Jinfeng Ni
• Reporter: Rahul Kumar Challapalli
• Created: 18/Dec/14 18:04
• Updated: 23/Apr/15 20:28
• Resolved: 19/Jan/15 04:17

Description

git.commit.id.abbrev=9dfa4a1

Dataset :

{
 "col1":1,
 "col2":"a"
}
{
 "col1":2,
 "col2":"b"
}
{
 "col1":2,
 "col2":"abc"
}

Query :

 select * from `b.json` order by length(col2);
+------------+------------+------------+
|    col1    |    col2    |   EXPR$1   |
+------------+------------+------------+
| 1          | a          | 1          |
| 2          | b          | 1          |
| 2          | abc        | 3          |
+------------+------------+------------+

Drill adds the length column. (EXPR$1) Not sure if this is intended behavior since postgres does not do this

Issue Links

• duplicates: DRILL-1778 expressions along with * in the select-clause makes drill return duplicated columns