hosein created SPARK-19655:
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Summary: select count(*) , requests 1 foreach row
Key: SPARK-19655
URL: https://issues.apache.org/jira/browse/SPARK-19655
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.1.0
Reporter: hosein
Priority: Minor
when I want query select count(*) by JDBC and monitor queries in database side,
I see spark requests: select 1 for destination table
it means 1 for each row and it is not optimized
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