Jakarta Persistence Query Language

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The Jakarta Persistence Query Language (JPQL; formerly Java Persistence Query Language) is a platform-independent object-oriented query language^{[1]: 284, §12} defined as part of the Jakarta Persistence (JPA; formerly Java Persistence API) specification.

JPQL is used to make queries against entities stored in a relational database. It is heavily inspired by SQL, and its queries resemble SQL queries in syntax,^{[1]: 17, §1.3} but operate against JPA entity objects rather than directly with database tables.^{[1]: 26, §2.2.3}

In addition to retrieving objects (SELECT queries), JPQL supports set based UPDATE and DELETE queries.