Haopu Wang created SPARK-7696: --------------------------------- Summary: Aggregate function's result should be nullable only if the input expression is nullable Key: SPARK-7696 URL: https://issues.apache.org/jira/browse/SPARK-7696 Project: Spark Issue Type: Bug Components: SQL Affects Versions: 1.3.1, 1.3.0 Reporter: Haopu Wang Priority: Minor
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