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Dec 6th, 2016
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  1. SELECT COUNT (*) FROM Teilnehmer
  2. SELECT COUNT (DISTINCT Ort) AS Schulorte FRom Ort
  3. SELECT SUM ( Dauer) AS Gesamtdauer_in_Freiburg FROM Kurs K, Ort O
  4. WHERE (K.Ort_Nr = O.Ort_Nr) AND (O.Ort = 'Freiburg')
  5. SELECT AVG (Dauer) AS Durchschnittsdauer FROM Kurs
  6. SELECT MIN (Dauer) AS Minimale_Kursdauer FROM Kurs
  7. SELECT Voraussetzungen, SUM (Dauer) AS Gesamtdauer FROM Kurs
  8. GROUP BY Voraussetzungen ORDER BY Sum (Dauer) DESC
  9. SELECT Ort, COUNT (Ort) AS Veranstaltungen FROM Ort
  10. GROUP BY Ort ORDER BY COUNT(Ort) DESC, Ort ASC
  11. SELECT Ort, SUM (Dauer) AS Gesamtdauer FROM Kurs, Ort
  12. WHERE Kurs.Ort_Nr = Ort.Ort_Nr GROUP BY Ort HAVING SUM (Dauer) >=10
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