change_column

# File activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb, line 271
      def change_column(table_name, column_name, type, **options) #:nodoc:
        alter_table(table_name) do |definition|
          definition[column_name].instance_eval do
            self.type = aliased_types(type.to_s, type)
            self.options.merge!(options)
          end
        end
      end