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De Wikipédia, l'encyclopédie libre
JDOQL est le langage d'interrogation spécifié par la norme JDO (Java Data Object). Le langage reprend la syntaxe de Java. Il prend en compte l'héritage et permet une navigation très simple.
Employee.class, “salary>boss.salary”
SELECT Employee.* FROM Employee INNER JOIN Employee AS Boss ON Employee.boss = Boss.ID WHERE ((Employee.salary)>[boss].[salary]);
Employee.class, “(salary>boss.salary) && (adr.city==boss.adr.city)”
SELECT Employee.* FROM ((Employee INNER JOIN Employee AS Boss ON Employee.boss = Boss.ID) INNER JOIN Address AS AddressEmployee ON Employee.adr = AddressEmployee.ID) INNER JOIN Address AS AddressBoss ON Boss.adr = AddressBoss.ID WHERE (((Employee.salary)>[boss].[salary]) AND ((AddressEmployee.City)=[AddressBoss].[City]));
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