SELECT * FROM studenten;
+----+----------------+----------------+----------+
| id | name           | matrikelnummer | semester |
|----+----------------+----------------+----------|
| 1  | Max Mustermann | 12345          | 3        |
| 2  | Anna Schmidt   | 56789          | 4        |
| 3  | Paul Meier     | 23231          | 1        |
+----+----------------+----------------+----------+
SELECT 3