Sudip Mukherjee created DRILL-4516:
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             Summary: Transform SUM(1) query to COUNT(1)
                 Key: DRILL-4516
                 URL: https://issues.apache.org/jira/browse/DRILL-4516
             Project: Apache Drill
          Issue Type: Improvement
          Components: Query Planning & Optimization
            Reporter: Sudip Mukherjee


If we connect drill with tableau we see some query requests like , select 
sum(1) tablename. 
This results in pulling all the records out of the underlying datasource and 
aggregate them to get row count.
The behavior can be optimized if the query gets transformed into a count(1) 
query which is likely to be optimized at the datasource level



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