私は以下にこのクエリを持っています：
SELECT q.SessionId, s.SessionName, q.QuestionId, q.QuestionContent, GROUP_CONCAT(DISTINCT Answer ORDER BY Answer SEPARATOR '') AS Answer, q.QuestionMarks
FROM Session s
INNER JOIN Question q ON s.SessionId = q.SessionId
JOIN Answer an ON q.QuestionId = an.QuestionId
AND an.SessionId = q.SessionId
WHERE s.SessionName = "GHWSW1" AND q.QuestionId = 1
GROUP BY an.SessionId, an.QuestionId
ORDER BY q.QuestionId, an.Answer
上記のクエリは、この結果を以下に出力します。
SessionId SessionName QuestionId QuestionContent Answer QuestionMarks
1 GHWSW1 1 Here are 2 answers BD 5
そこで、以下のコードにクエリを含めて、htmlテーブルを設定しました。
$assessment = "GHWSW1";
$number = 1;
$query = "SELECT q.SessionId, s.SessionName, q.QuestionId, q.QuestionContent,
GROUP_CONCAT(DISTINCT Answer ORDER BY Answer SEPARATOR '') AS Answer, q.QuestionMarks
FROM Session s
INNER JOIN Question q ON s.SessionId = q.SessionId
JOIN Answer an ON q.QuestionId = an.QuestionId AND an.SessionId = q.SessionId
WHERE s.SessionName = ? AND q.QuestionId = ?
GROUP BY an.SessionId, an.QuestionId
ORDER BY q.QuestionId, an.Answer
";
// prepare query
$stmt=$mysqli->prepare($query);
// You only need to call bind_param once
$stmt->bind_param("si", $assessment, $number);
// execute query
$stmt->execute();
// This will hold the search results
$searchQuestionId = array();
$searchQuestionContent = array();
$searchAnswer = array();
$searchMarks = array();
// Fetch the results into an array
// get result and assign variables (prefix with db)
$stmt->bind_result($dbSessionId, $dbSessionName, $dbQuestionId, $dbQuestionContent, $dbAnswer, $dbQuestionMarks);
while ($stmt->fetch()) {
$searchQuestionId[] = $dbQuestionId;
$searchQuestionContent[] = $dbQuestionContent;
$searchAnswer[] = $dbAnswer;
$searchMarks[] = $dbQuestionMarks;
}
?>
</head>
<body>
<form id="QandA" action="<?php echo htmlentities($_SERVER['PHP_SELF']); ?>" method="post">
<?php
echo "<table border='1' id='markstbl'>
<tr>
<th class='questionth'>Question No.</th>
<th class='questionth'>Question</th>
<th class='answerth'>Answer</th>
<th class='noofmarksth'>Total Marks</th>
</tr>\n";
foreach ($searchQuestionContent as $key=>$question) {
echo '<tr class="questiontd">'.PHP_EOL;
echo '<td class="optiontypetd">'.htmlspecialchars($searchQuestionId[$key]).'</td>' . PHP_EOL;
echo '<td>'.htmlspecialchars($question).'</td>' . PHP_EOL;
echo '<td class="answertd">'.htmlspecialchars($searchAnswer[$key]).'</td>' ;
echo '<td class="noofmarkstd">'.htmlspecialchars($searchMarks[$key]).'</td>' . PHP_EOL;
}
echo "</table>" . PHP_EOL;
?>
したがって、HTMLテーブルには次のように表示されます。
QuestionId QuestionContent Answer QuestionMarks
1 Here are 2 answers BD 5
しかし、私はhtmlテーブルでこのようにしたいと思います：
QuestionId QuestionContent Answer QuestionMarks
1 Here are 2 answers B 5
D
2番目の回答Dは別の行にあり、他の行には行スパンが必要です。しかし、これはどのように達成できますか？
セッションテーブル：
SessionId (auto) SessionName
1 AAA
質問表：
SessionId QuestionId (auto) QuestionContent
1 1 What is 2+2?
回答表：
AnswerId (auto) SessionId QuestionId Answer
1 1 1 B
2 1 1 D