public function addColumn($name, $type, array $attributes = [])
    {
        if ($this->scope == 'alter') {
            $command = 'ADD COLUMN';
        } else {
            $command = null;
        }

        $this->sqls[] = $this->composeAddColumn(
            trim($name, '`'),
            compact('name', 'type', 'attributes', 'command')
        );

        return $this;
    }