Baza danych Northwind
Baza danych Northwind
Baza danych Northwind
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Wyszukiwanie wartości NULL<br />
USE northwind<br />
SELECT companyname, fax<br />
FROM suppliers<br />
WHERE fax IS NULL<br />
GO<br />
companyname<br />
Exotic Liquids<br />
New Orleans Cajun Delights<br />
Tokyo Traders<br />
Cooperativa de Quesos ‘Las Cabras’<br />
…<br />
fax<br />
NULL<br />
NULL<br />
NULL<br />
NULL<br />
…
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