About SELECT
SELECT clause (JPQL / Criteria API)
Explains how to use the SELECT clause and projections in a JPA/JPQL query.... See JavaDoc Reference Page... ( "SELECT c FROM Country c" , Country. class ) ; ... getResultList() TypedQuery's method Execute a SELECT query and return the query results as a typed List. See JavaDoc ... the ability to use almost any valid JPQL expression in SELECT clauses. Specifying the required query results more precisely can ...
javax.persistence.criteria.Selection
The Selection interface defines an item that is to be returned in a query result.(Interface of JPA)
Criteria Query Selection and Results
Reference (JavaDoc) of JPA query criteria result interfaces, including Selection, CompoundSelection, Order and Tuple.... API interfaces in this group are in use for setting the SELECT and ORDER BY clauses and for representing query results as tuples. SELECT Clause Elements The content of the SELECT clause in a criteria ...
select(selection)
Specify the item that is to be returned in the query result.(Method of javax.persistence.criteria.CriteriaQuery)
JPA Query Structure (JPQL / Criteria)
Explains the structure of a JPQL query, which consists of 6 clauses: SELECT, FROM, WHERE, GROUP BY, HAVING, ORDER BY.... JPQL Query Structure As with SQL, a JPQL SELECT query also consists of up to 6 clauses in the following format: SELECT ... FROM ... [ WHERE ... ] [ ...
multiselect(selections)
Specify the selection items that are to be returned in the query result.(Method of javax.persistence.criteria.CriteriaQuery)
array(selections)
Create an array-valued selection item.(Method of javax.persistence.criteria.CriteriaBuilder)
construct(resultClass, selections)
Create a selection item corresponding to a constructor.(Method of javax.persistence.criteria.CriteriaBuilder)
Chapter 4 - JPA Queries (JPQL / Criteria)
Describes the Java Persistence Query Language (JPQL), the JPA Criteria API, and explains how to use queries in JPA.... explained by describing the main clauses of JPQL queries (SELECT, FROM, WHERE, GROUP BY, HAVING, ORDER BY): JPA Query ...
tuple(selections)
Create a tuple-valued selection item.(Method of javax.persistence.criteria.CriteriaBuilder)
