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Line 1: {{~~noref~~inline\|date=June 2010}} {{Infobox programming language \| name = Jakarta Persistence Query Language Line 11: \| latest_test_version = \| latest_test_date = ~~\| turing-complete = No~~ \| typing = \| implementations = Line 21 ⟶ 20: \| website = }} The '''Jakarta Persistence Query Language''' ('''JPQL'''; formerly Java Persistence Query Language) is a platform-independent [[Object-oriented programming\|object-oriented]] [[query language]]{{sfn\|Bauer\|King\|Gregory\|2016}}{{rp\|loc=§12\|p=284}} 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,{{sfn\|Bauer\|King\|Gregory\|2016}}{{rp\|loc=§1.3\|p=17}} but operate against JPA entity objects rather than directly with database tables.{{sfn\|Bauer\|King\|Gregory\|2016}}{{rp\|loc=§2.2.3\|p=26}} In addition to retrieving objects (<code>SELECT</code> queries), JPQL supports set based <code>UPDATE</code> and <code>DELETE</code> queries. Line 105 ⟶ 104: Hibernate and the HQL were created before the JPA specification. As of Hibernate 3 JPQL is a subset of HQL. ==Citations== {{Reflist}} ==References== {{citation \|last1 = Bauer \|first1 = Christian \|last2 = King \|first2 = Gavin \|last3 = Gregory \|first3 = Gary \| year = 2016 \| title = Java Persistence with Hibernate \| edition = Second \| publisher = [[Manning Publications]] \| isbn = 978-1617290459 \| url = }} ==See also== Line 113 ⟶ 131: == External links == {{official website}} ** [https://eclipse-ee4j.github.io/jakartaee-tutorial/~~persistence~~#full-~~querylanguage006.html~~query-language-syntax Full Query Language Syntax from The Jakarta EE 8 Tutorial] * [https://www.objectdb.com/java/jpa/query JPA Queries and JPQL - a chapter of the ObjectDB Manual] * [https://torpedoquery.org/ Type safe Hibernate (HQL) query engine - TorpedoQuery]