Ashutosh Chauhan created HIVE-7835:
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Summary: [CBO] Handle a case where FieldTimmer trims all fields
from input
Key: HIVE-7835
URL: https://issues.apache.org/jira/browse/HIVE-7835
Project: Hive
Issue Type: Sub-task
Components: CBO
Reporter: Ashutosh Chauhan
Assignee: Ashutosh Chauhan
eg in queries like select 1 from t1 where nothing needs to be projected we
generate empty project list which results in incorrect ast getting generated.
Currently, we fix while generating ast by eliminating such AST node, but better
is to generate correct project list to begin with.
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