Yanbo Liang created SPARK-12011:
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Summary: Stddev/Variance etc should support columnName as arguments
Key: SPARK-12011
URL: https://issues.apache.org/jira/browse/SPARK-12011
Project: Spark
Issue Type: Improvement
Components: SQL
Reporter: Yanbo Liang
Spark SQL aggregate function
stddev/stddev_pop/stddev_samp/variance/var_pop/var_samp/skewness/kurtosis/collect_list/collect_set
should support columnName as arguments like other aggregate
function(max/min/count/sum).
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