Aman Sinha created DRILL-1220:
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Summary: Process the 'star' columns appropriately in Project
operator based on new plans
Key: DRILL-1220
URL: https://issues.apache.org/jira/browse/DRILL-1220
Project: Apache Drill
Issue Type: Improvement
Reporter: Aman Sinha
Assignee: Aman Sinha
For queries that involve '*' (star) in the SELECT list, the Drill plan has
to perform special handling of such columns since it must distinguish columns
coming from both sides of a join. Recent planner enhancements add prefixes at
the appropriate intermediate Project nodes and remove it at the top level
Project.
The Project execution operator must be enhanced in order to correctly process
such 'annotated' Project expressions that are handed by the plan. This issue
tracks this enhancement.
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