[HIVE-8145] CBO: bail from Optiq planning if a Select list contains multiple references to the same name

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.14.0
• Component/s: CBO
• Assignee: Harish Butani
• Reporter: Harish Butani
• Created: 16/Sep/14 20:53
• Updated: 13/Nov/14 19:42
• Resolved: 16/Sep/14 21:14

Description

Optiq explicitly disallows this:

select x, x from t1

This is allowed in Hive (and also in mysql). Will check in Postgres. For now bailing from Optiq planning if we see this. Will file an Optiq issue.

Issue Links

• is cloned by: HIVE-8159 CBO: bail from Optiq planning if a Select list contains multiple references to the same name