instance method `sum`

Ruby on Rails 3.1.12

Since v3.0.20

Available in: v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

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/relation/calculations.rb, line 92
    def sum(column_name, options = {})
      calculate(:sum, column_name, options)
    end

Defined in activerecord/lib/active_record/relation/calculations.rb line 92 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::Calculations

Signature

Parameters