Prado\Data\TDbDataReader::readColumn PHP 메소드

Returns a single column from the next row of a result set.

public readColumn ( $columnIndex ) : mixed \| false
리턴	mixed \| false	the column of the current row, false if no more row available

    public function readColumn($columnIndex)
    {
        return $this->_statement->fetchColumn($columnIndex);
    }

TDbDataReader