Class: Babik::QuerySet::StdDevSample

Inherits:
PostgresMySQLAggregationFunction show all
Defined in:
lib/babik/queryset/components/aggregation.rb

Overview

Standard deviation (sample) of a set of values

Constant Summary collapse

SQL_OPERATION = 
'STDDEV_SAMP(?field)'

Instance Attribute Summary

Attributes inherited from AbstractAggregationFunction

#field_name, #model, #selection

Method Summary

Methods inherited from PostgresMySQLAggregationFunction

#sql_operation

Methods inherited from AbstractAggregationFunction

db_adapter, #initialize, #left_joins_by_alias, #prepare, #sql

Constructor Details

This class inherits a constructor from Babik::QuerySet::AbstractAggregationFunction