public function decimal($column, $length = 10, $scale = 2)
    {
        return $this->addColumn($column, self::TYPE_DECIMAL, array('length' => $length, 'scale' => $scale));
    }
public function decimal($column, $length = 10, $scale = 2)
    {
        return $this->addColumn($column, self::TYPE_DECIMAL, array('length' => $length, 'scale' => $scale));
    }
public function decimal ( $ column , $ length = 10 , $ scale = 2 ) { return $ this -> addColumn ( $ column , self :: TYPE_DECIMAL , array ( 'length' => $ length , 'scale' => $ scale ) ) ; }
Add a decimal column

@param string $column
@param int $length
@param int $scale
@return $this
Add a decimal column