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ChiudiRecensioni per Bank Search Finanz Suche Finance Directory
2 recensioni per questo componente aggiuntivo
Assegnate 3 su 5 stelle
Sichten (views):
a)
Create view Sicht_a (KFZNR, anzahl_reservierungen)
as Select f.KFZNR, Count(r.fnr)
from fahrzeuge f left outer join reservierung r
on f.fnr = r.fnr
group by f.kfznr order by 1;
Select * from Sicht_a
b)
Create view Sicht_b (Name)
as Select kname
from kunden
where knr Not IN (Select knr from reservierung)
And knr Not In (Select knr from vermietung);
Select * from Sicht_b;
c)
Create view Sicht_c (fnr, bis, abholung)
as Select distinct f.fnr, v.bis, r.abholung
from fahrzeuge f inner join vermietung v
on f.fnr = v.fnr
inner join reservierung r
on f.fnr = r.fnr
where v.bis > r.abholung;
Select * from Sicht_c
Assegnate 5 su 5 stelle
gutes und einfach zu bedienendes such addon
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