Question

我有一张桌子question_attempts。此表格包含两列rightanswers和youranswer。

我想获得记录数rightanswer = youranswer。这实际上是我的整个代码。

$quizsections = mysql_query("SELECT * FROM quiz_sections");
while($quizsectionsrslt = mysql_fetch_array($quizsections)){
$quizsectionsid        = $quizsectionsrslt['id'];
$quizsectionsheading   = $quizsectionsrslt['heading'];
$quizsectionsquizid    = $quizsectionsrslt['quizid'];
$quizsectionsfirstslot = $quizsectionsrslt['firstslot'];
echo $quizsectionsheading."<br />";
$quizslots = mysql_query("SELECT * FROM quiz_slots WHERE `quizid`=$quizsectionsquizid LIMIT ".($quizsectionsfirstslot-1).", 10");
while($quizslotsrslt = mysql_fetch_array($quizslots)){
    $quizslotids = $quizslotsrslt['questionid'];
    $questions = mysql_query("SELECT * FROM question_attempts WHERE `questionid`=$quizslotids");
    $num_rows = mysql_num_rows($quizslots);
    while($answercount = mysql_fetch_array($questions)){
        $answercountrslt = $answercount['questionid'];
        echo $rightanswer = $answercount['rightanswer'];
        echo $youranser = $answercount['responsesummary']."<br />";
//Here want to display the count of rightanswer and count of wrong answer.
    }
    }
    echo "Total Questions : ".$num_rows."<br /><br />";
}

Answer 1

使用下方：

[[[GAI sharedInstance] logger] setLogLevel:kGAILogLevelInfo];

Answer 2

如果你只想获得计数，那么你可以使用mysql_num_rows

$questions = mysql_query("SELECT count(*) FROM question_attempts where rightanswers=youranswer");
$count=mysql_num_rows($questions);

Answer 3

您可以通过SQL查询执行任务，并执行正确答案的内容

$questions = mysql_query("SELECT * FROM question_attempts where rightanswers=youranswer");

$count = mysql_num_rows($questions);

// $count is number of right answers
while($row = mysql_fetch_array($questions))
{
    // Stuff on right answers
}

使用if条件计算来自两列的相同记录

3 个答案: