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Wenn du also die Spalten
Sp1 Sp2 Sp3 in deiner Tabelle1 hast und diese die Werte:
A B C
A V C
A V C
A B C
A Y Z
enthalten
lautet das Statement:
SELECT Sp1, Sp2, Sp3 from Tabelle1
GROUP BY Sp1, Sp2, Sp3;
Ergibt dann:
Sp1 Sp2 SP3
A B C
A V C
A Y Z