Class StdDevSAggregator<V extends Number>

All Implemented Interfaces:
Externalizable, Serializable, Aggregator<V,Double,VarPAggregator<V>>

public class StdDevSAggregator<V extends Number> extends VarSAggregator<V>

This class implements the SQL Standard STDDEV_SAMP() aggregator, computing a sample's standard deviation. It relies on VarSAggregator to compute the sample's variance and then applies the textbook definition of standard deviation:

var_samp()
 
See Also: