我正在使用 mariaDB、codeigniter php
在工作台中执行该过程时，它显示正确的结果。
但是当我使用 php codeigniter 运行相同的过程时，它返回不同的结果集。
array(1) {
[0]=>
array(1) {
[0]=>
array(2) {
["stuScore"]=> string(7) "44.0000"
["answerdQues"]=> string(2) "50"
}
}
}
程序中的查询...
SELECT sum(Score) as stuScore, count(distinct ta1.idTestQuestion) as answerdQues
FROM (select ta0.*, @running_time := if(@running_student = idStudent, @running_time, 0) + ta0.TimeTaken, date_add(ta0.StartTime, INTERVAL @running_time SECOND) as running_time, @running_student := idStudent
from (select tap.idStudent, ta.score, ta.idTestQuestion, tap.StartTime, ta.TimeTaken
from `testanswerpaper` tap
left join testanswer ta on ta.idTestAnswerPaper = tap.idTestAnswerPaper and (ta.Status = 'Flagged' || ta.Status = 'Answered')
where tap.`idTestQuestionPaper` = TestQuestionPaperID
order by tap.idStudent, ta.SortOrder, ta.idTestAnswer
) ta0
join (select @running_time := 0, @running_student) running
) ta1
join student s on s.idStudent = ta1.idStudent
join user u on s.idUser = u.idUser
WHERE ta1.running_time <= now()
group by ta1.idStudent
order by stuScore desc, answerdQues DESC;
php代码是
$this->readDB = $this->load->database('read', TRUE);
$connectId = $this->readDB->conn_id ;
$sql = "call GetLeaderBoardData($TestQuestionPaperID);";
if (mysqli_multi_query($connectId,$sql))
{
do
{
// Store first result set
if ($result=mysqli_store_result($connectId)) {
$resultArray[] = mysqli_fetch_all($result, MYSQLI_ASSOC);
}
} while (mysqli_next_result($connectId));
}
var_dump($resultArray);
最佳答案
差异可能来自这样一个事实:当您从工作台与 codeigniter 执行代码时，用户定义的变量可能具有不同的值，因为用户定义的变量在整个 session 中保持其值。
要排除这种情况，请在过程开始时重置 @running_time 和 @running_student 值。
set @running_time = null;
set @running_student = null;
SELECT sum(Score)...
关于PHP没有返回最新更新的sql过程结果，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/58168082/