Fatal error: Uncaught PDOException: SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'code' in field list is ambiguous in /home/quizlabor/www.quizlabor.de/_class.sql.php:32 Stack trace: #0 /home/quizlabor/www.quizlabor.de/_class.sql.php(32): PDOStatement->execute() #1 /home/quizlabor/www.quizlabor.de/_class.sql.php(52): mySQLClass->my_select() #2 /home/quizlabor/www.quizlabor.de/achievements.php(65): _query() #3 /home/quizlabor/www.quizlabor.de/index.php(65): require_once('/home/quizlabor...') #4 {main} thrown in /home/quizlabor/www.quizlabor.de/_class.sql.php on line 32