Select CRU From VINS Where ANNEE = 1973 Minus Select CRU From VINS V, RECOLTES R Where V.NUM = R.NVIN AND ANNEE = 1973
From VINS
Where ANNEE = 1973
Minus
Select CRU
From VINS V, RECOLTES R
Where V.NUM = R.NVIN AND ANNEE = 1973
Nombre de tuples : 1