sum(column_name, options = {}) — ActiveRecord::Calculations::ClassMethods

sum(column_name, options = {})

Calculates the sum of values on a given column. The value is returned with the same data type of the column, 0 if there’s no row. See calculate for examples with options.

Person.sum('age') # => 4562

Parameters

column_name req
options opt = {}

Source

# File activerecord/lib/active_record/calculations.rb, line 83
      def sum(column_name, options = {})
        calculate(:sum, column_name, options)
      end

Defined in activerecord/lib/active_record/calculations.rb line 83 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::Calculations::ClassMethods

Signature

Parameters