was column rails code example

Example 1: change column rails example

def change
    change_column(:table_name, :column_name, :new_type)
end

Example 2: how create migration rails

rails g migration AddPartNumberToProducts

Example 3: activerecord add column

class AddPartNumberToProducts < ActiveRecord::Migration[6.0]
  def change
    add_column :products, :part_number, :string
  end
end