[TAJO-917] Using alias name which is same to existing column names causes error

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Fix Version/s: 0.9.0
• Component/s: Planner/Optimizer
• Assignee: Hyunsik Choi
• Reporter: Hyunsik Choi
• Created: 08/Jul/14 07:09
• Updated: 07/Oct/14 21:53
• Resolved: 07/Oct/14 21:53

Description

See the title. The following query reproduces the error.

select 
    temp.id as id
from 
    (
    select 
        table1.id as id 
    from 
        table1
    ) temp 
join 
    table1 b 
on 
    temp.id = b.id;

Issue Links

• depends upon: TAJO-975 alias name which is the same to existing column name may cause NPE during PPD