Question

在我的表中

           names                           countries                       scores
[id  --  FirstName  -- LastName]    [id --  cid  --  Country]      [id   --  sid  --  Score]
[1   --   FName1    --  LName1 ]    [1  --   1   --  USA    ]      [1    --   1   --      5] 
[2   --   FName2    --  LName2 ]    [2  --   1   --  France ]      [2    --   1   --      6]
[3   --   FName3    --  LName3 ]    [3  --   1   --  Germany]      [3    --   2   --      7]
[4   --   FName1    --  LName1 ]    [4  --   2   --  Germany]      [4    --   2   --      8] 
                                    [5  --   2   --  Czech  ]      [5    --   2   --      2]
                                    [6  --   3   --  Germany]      [6    --   4   --     12]
                                    [7  --   4   --  Czech  ]      [7    --   3   --     15]

我获取数据并在此结构中进行

.Container div {
    border: 1px solid blue;
    margin: 10px;
}
.Container div div {
    border: 1px solid red;
    margin: 10px;
}

<div>
    <div id="Master German">German</div>
    <div id="German">
        <div class="Container">
           <div id='FName2 German'>
                <div>FName2</div>
                <div>LName2</div>
            </div>
            <div id='FName1 German'>
                <div>FName1</div>
                <div>LName1</div>
            </div>
            <div id='FName3 German'>
                <div>FName3</div>
                <div>LName3</div>
            </div>
        </div>
    </div>

    <div id="Master France">France</div>
    <div id="France">
        <div class="Container">
            <div id='FName1 France'>
                <div>FName1</div>
                <div>LName1</div>
            </div>
        </div>
    </div>

   <div id="Master Czech">Czech</div>
    <div id="Czech">
        <div class="Container">
            <div id='FName4 Czech'>
                <div>FName4</div>
                <div>LName4</div>
            </div>
            <div id='FName2 Czech'>
                <div>FName2</div>
                <div>LName2</div>
            </div>
        </div>
    </div>
    
    <div id="Master USA">USA</div>
    <div id="USA">
        <div class="Container">
            <div id='FName1 USA'>
                <div>FName1</div>
                <div>LName1</div>
            </div>
        </div>
    </div>
</div>

使用以下查询

SELECT
    a.FirstName,
    a.LastName,
    c.Country,
    SUM(b.Scores) AS Score
FROM names a
INNER JOIN countries c
    ON a.id = c.cid
LEFT JOIN scores b
    ON a.id = b.sid
WHERE a.id = :id
GROUP BY a.id
ORDER BY Score ASC

现在我的问题出现在例如id[1]和id[4]具有相同的FName和LName，但得分不同

因为我按Score和id[4] ＆gt; id[1]

订购了它们

结构应该像

Germany: 
FName2 -- LName2 [Score: 15]
FName3 -- LName3 [Score: 15]
FName1 -- LName1 [Score: 11]

Czech: 
FName2 -- LName2 [Score: 15]
FName1 -- LName1 [Score: 12]

但我得到的是

Germany: 
FName2 -- LName2 [Score: 15]
FName3 -- LName3 [Score: 15]

Czech: 
FName2 -- LName2 [Score: 15]
FName1 -- LName1 [Score: 12]

Germany: 
FName1 -- LName1 [Score: 11]

我尝试了所有可能的group by但没有任何效果总是有额外的country div

我的PHP代码是

$pre = null;
echo "<div>";
$end = "";
while ($row = $stmt->fetch()) {
    $FName = $row['FirstName'];
    $LName = $row['LastName'];
    $Country = $row['Country'];

    if ($Country != $pre) {
        echo $end;
        echo "<div id='Master $Country'>$Country</div>";
        echo "<div id='$Country'>";
    }
    $end = "</div>
</div>";
    $pre = $Country;

    echo "
<div id='$FName USA'>
    <div>$FName</div>
    <div>$LName</div>
</div>";
}
echo $end;
echo "</div>";

Answer 1

按国家/地区排序，然后得分：

SELECT
    a.FirstName,
    a.LastName,
    c.Country,
    SUM(b.Scores) AS Score
FROM names a
INNER JOIN countries c
    ON a.id = c.cid
LEFT JOIN scores b
    ON a.id = b.sid
WHERE a.id = :id
GROUP BY a.id
ORDER BY c.Country, Score ASC

保持数据GROUPED而不被ORDER分隔

1 个答案: