CERERI SELECT PE MAI MULTE TABELE - Baze de date
CERERI SELECT PE MAI MULTE TABELE - Baze de date
CERERI SELECT PE MAI MULTE TABELE - Baze de date
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NATURAL JOIN<br />
E un echijoin dupa toate coloane cu<br />
acelasi nume:<br />
<strong>SELECT</strong> [DISTINCT] lista_<strong>de</strong>_expresii<br />
FROM tabela1<br />
NATURAL JOIN tabela2<br />
Exemplu – fara linii rezultat, nici un stu<strong>de</strong>nt<br />
nu are acelasi nume cu o specializare:<br />
<strong>SELECT</strong> NUME, DATAN, DOMENIU<br />
FROM STUD<br />
NATURAL JOIN S<strong>PE</strong>C; -- echijoin dupa NUME si CODS<br />
F. Radulescu. Curs: <strong>Baze</strong> <strong>de</strong> <strong>date</strong> -<br />
Limbajul SQL<br />
40
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