maximum(column_name, options = {})
Calculates the maximum value on a given column. The value is returned with the same data type of the column, or nil if there’s no row. See calculate for examples with options.
Person.maximum('age') # => 93
# File activerecord/lib/active_record/relation/calculations.rb, line 83 def maximum(column_name, options = {}) calculate(:maximum, column_name, options) end
