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@@ -1203,7 +1203,7 @@ class Exercise
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$sql = "SELECT e.question_id
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FROM $TBL_EXERCISE_QUESTION e
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INNER JOIN $TBL_QUESTIONS q
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- ON (e.question_id= q.iid AND e.c_id = q.c_id)
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+ ON (e.question_id= q.id AND e.c_id = q.c_id)
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WHERE e.c_id = {$this->course_id} AND e.exercice_id = '".Database::escape_string($this->id)."'
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$randomLimit ";
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$result = Database::query($sql);
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