module ActiveRecord::ConnectionAdapters::SQLite3::Quoting

def quote_default_expression(value, column) # :nodoc:
  if value.is_a?(Proc)
    value = value.call
    if value.match?(/\A\w+\(.*\)\z/)
      "(#{value})"
    else
      value
    end
  else
    super
  end
end