php foreach从数据库表中获取所有数据

Question

我想得到以下所有值：echo "<td class=\"points\">" . $row2['PIY'] . "/" . $row2['PIK'] . "</td>";一些如何只返回第一个值。之后我想计算它们的总和。

目前代码只获得第一个。

echo "<table class=\"zebra\">";
$sum1=0;
$sum2=0;
$numbering =1;
$query2 = "SELECT pisteet_1 As PIY, pisteet_2 as PIK, nimi As NIM, opisto As OPI, pisteet.kaupunki_id As KA FROM
 pisteet INNER JOIN joukkueet ON joukkueet.id = pisteet.team_id INNER JOIN oppilaitokset ON oppilaitokset.opisto_id = joukkueet.opisto_id GROUP BY nimi, team_id ORDER BY team_id ASC";

foreach ($db->query($query2) as $row2) {
    echo "<tr class=\"all " . $row2['KA'] . "\">";
    echo "<td>" . $numbering . "</td>";
    echo "<td>" . $row2['NIM'] ."<span>" . $row2['OPI'] ."</span></td>";

//--------should get all the points----------
    echo "<td class=\"points\">" . $row2['PIY'] . "/" . $row2['PIK'] .  "</td>";
    $sum1 +=$row2['PIY'];
    $sum2 +=$row2['PIK'];
    echo '<td class="Sum">'.$sum1.'/'.$sum2."</td>";
//-------------------------------------------

    echo "</tr>";
    $numbering ++;
}
echo '</table>';