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About INNER JOIN

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JDO Doc
15

Join.index

Annotation Element javax.jdo.annotations.Join String index The name of the index to generate. Returns: the name of the index Default value: "" Since: JDO 2.1
JDO Doc
15

Join.primaryKey

Annotation Element javax.jdo.annotations.Join String primaryKey Name for a generated primary key constraint. Returns: the name of the generated primary key constraint Default value: "" Since: JDO 2.1
JDO Doc
15

Join.uniqueKey

Annotation Element javax.jdo.annotations.Join String uniqueKey The name of the unique key constraint to generate. Returns: the name of the unique key constraint Default value: "" Since: JDO 2.1
JPA Doc
14

javax.persistence.criteria.JoinType

, Comparable Defines the three types of joins. Right outer joins and right outer fetch joins are not required to be supported in Java Persistence 2.0. Applications that use RIGHT join types will not be portable. Since: JPA 2.0 JoinType INNER Inner join. Inner join. Since: JPA 2.0 JoinType
Forum
13

Multiple joins did not return expected result

a specific calendar by its id like: SELECT event FROM Calendar c1, SharedCalendar c2 INNER JOIN c1.events AS event INNER JOIN c2.original.events AS event WHERE c1.id=?1 OR c2.id=?1 Unfortunately ... JOIN c1.events AS event1 INNER JOIN c2.original.events AS event2 WHERE c1.id=?1 OR c2.id=?1 instead
Forum
13

LEFT JOIN FETCH over empty embedded collection returns no results

may be with the expression c.bList.val. Path expressions are considered as INNER JOIN by JPA ... First of all, thank you for promptly implementing JOIN FETCH over nested paths in response ... , but I attempt to LEFT JOIN FETCH all the members of a collection within a (non-existent) member
Forum
13

Query with FETCH JOIN returns multiple results instead of one.

as the corresponding inner or outer join, except that the related objects specified on the right-hand ... jpqlResult = em.createQuery( "SELECT d FROM Demand d JOIN FETCH d.services WHERE d=:demand ... with DISTINCT: SELECT DISTINCT d FROM Demand d JOIN FETCH d.services WHERE d=:demand You are probably
Forum
12

Possible issue for JPQL "LEFT [OUTER] JOIN"

Possible issue for JPQL "LEFT [OUTER] JOIN" is doing "[INNER] JOIN".   Thanks. Thank ... work with the following JPQL queries string:     - "SELECT a,b FROM A a LEFT OUTER JOIN a.listB b ... ] [A4, null]??? NULL is only for single-valued field.     - "SELECT a,b FROM A a LEFT OUTER JOIN a.listB
Manual
9

JPA Persistable Types

: should be a top-level class (i.e. not a nested / inner class). should have a public or protected no-arg ... is slightly less restrictive: Static nested entity classes are allowed (non static inner classes
JPA Doc
8

fetch(attribute)

Method javax.persistence.criteria.FetchParent Fetch fetch(   PluralAttribute attribute ) Create a fetch join to the specified collection-valued attribute using an inner join. Parameters: attribute - target of the join Returns: the resulting join Since: JPA 2.0