public function normalize($value)
    {
        if ($value instanceof Expression ||
            $value instanceof Expressionable) {
            return $value;
        }

        return parent::normalize($value);
    }
public function normalize($value)
    {
        if ($value instanceof Expression ||
            $value instanceof Expressionable) {
            return $value;
        }

        return parent::normalize($value);
    }
public function normalize ( $ value ) { if ( $ value instanceof Expression || $ value instanceof Expressionable ) { return $ value ; } return parent :: normalize ( $ value ) ; }
SQL fields are allowed to have expressions inside of them.

@param mixed $value

@return mixed
SQL fields are allowed to have expressions inside of them .