DB Tabloları
problem_link tablosu:
https://i.hizliresim.com/bVPERY.png
problem tablosu:
https://i.hizliresim.com/grQYRL.png
$checkProblemList = $conn -> prepare("SELECT * FROM py_list INNER JOIN problem_link ON py_list.py_id = problem_link.List_ID RIGHT JOIN problem ON problem_link.Problem_ID=problem.ID");
$checkProblemList -> execute();