Login Register

sum

sum(*args)

Instance Public methods

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.

1	`Person.sum(:age)` `# => 4562`

Links:

https://github.com/rails/rails/blob/0ef8a244231c355cab7f4d032efed51ef5ddfe99/activerecord/lib/active_record/relation/calculations.rb#L74

doc_ruby_on_rails

2025-01-10 15:47:30

Comments

Leave a Comment

Please login to continue.

Popular Articles

sum sum skimage.filters.rank.sum(image, selem, out=None, mask=None, shift_x=False, shift_y=False) [source] Return the local sum of pixels. Note that t

sum() sum(iterable[, start]) Sums start and the items of an iterable from left to right and returns the total. start defaults to 0. The iterable‘s items

sum sum(identity = 0, &block) Instance Public methods Calculates a sum from the elements. payments.sum { |p| p.price * p.tax_rate } paym

_.sum _.sum(array) source npm package Computes the sum of the values in array. Since 3.4.0 Arguments array (Array): The array to iterate over. Returns

sum str.sum(n=16) â integer Instance Public methods Returns a basic n-bit checksum of the characters in str, where n is the optional Fixn