[TAJO-829] Same constants in groupby clause may cause planning error.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.9.0, 0.8.1
• Component/s: Planner/Optimizer
• Assignee: Hyunsik Choi
• Reporter: Hyunsik Choi
• Created: 14/May/14 06:04
• Updated: 20/May/14 08:39
• Resolved: 15/May/14 23:35

Description

select l_partkey as a, '##' as b, '##' as c, count(*) d
from lineitem
group by a, b, c

See the above query case. This query causes the planning error. This patch fixes the bug. Also, this patch removes duplicated group by keys.

I verified 'mvn clean install'.