[TAJO-538] Groupby queries with constant target lists doesn't work

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.8.0
• Component/s: Planner/Optimizer
• Assignee: Hyunsik Choi
• Reporter: Hyunsik Choi
• Created: 21/Jan/14 05:03
• Updated: 21/Jan/14 06:39
• Resolved: 21/Jan/14 06:35

Description

select l_orderkey as gkey, '00' as num from lineitem group by lineitem.l_orderkey;

Basically, target list must be either grouping key or measure. In addition, constant value can be placed on the target list with groupby.

But, current Tajo causes error in this case. This patch fixes this bug.