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INFORMATICA MEDICA

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Restrizione<br />

• Opera sulle righe<br />

• Ottiene un sottoinsieme delle righe della<br />

tabella<br />

• Dipende dalle condizioni specificate nel<br />

WHERE<br />

• Operatori (, ) e<br />

connettori logici (AND, OR, NOT)<br />

• Operatori BETWEEN, IN, IS NULL<br />

Inf. Med.- 3. Panoramica su SQL -<br />

A.A. 2013-14

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