![]() These will not be managed objects, and the class must define a constructor that matches the arguments of the constructor and their types. These functions can be used to return a single result, or can be used with a GROUP BY to return multiple results. Select queries can return a single object or data element, a list of objects or data elements, or an object array of multiple objects and data. Query (through annotations or XML) or in dynamic queries using the Entity. ![]() JPQL can be used for reading (SELECT), as well as bulk updates (UPDATE) and deletes (DELETE). JPQL is similar to SQL, but operates on objects, attributes and relationships instead of tables and columns. The Java Persistence Query Language (JPQL) is the query language defined by JPA. Java Persistence/JPQL - Wikibooks, open books for an open world.
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