About LEFT OUTER JOIN

manual

FROM clause (JPQL / Criteria API)

Explains how to use the FROM clause and JOIN expressions in a JPA/JPQL query.... Range Variables [INNER] JOIN LEFT [OUTER] JOIN [LEFT [OUTER] | INNER] JOIN FETCH ...

 
forum_thread

LEFT (OUTER) JOIN problem when mappedBy is defined

Hi all, I want to get objects with their lists, even when the lists are empty. So I've witten this query: "SELECT i FROM Invoice i LEFT OUTER JOIN i.itemList items" But this query never returns invoices without items! Only invoices with items. When I remove mappedBy from @OneToMany annotation, LEFT JOIN works correctly. Is this normal behaviour? Thank you Michael   Sample application ... witten this query: "SELECT i FROM Invoice i LEFT OUTER JOIN i.itemList items" But this query never returns invoices ...

 
forum_thread

Possible issue for JPQL "LEFT [OUTER] JOIN"

Possible issue for JPQL "LEFT [OUTER] JOIN" is doing "[INNER] JOIN".   Thanks. ... Possible issue for JPQL "LEFT [OUTER] JOIN" is doing "[INNER] JOIN".   Thanks. ...

 
forum_thread

Query in JPA2 with LEFT JOIN on INNER JOIN

select a.description, a.id, p1.description, p2.description,p3.description from action a left join action_profile ap1 on ap1.id_action=a.id inner join profile p1 on  ap1.id_profile=p1.id  and p1.name='?' left join action_profile ap2 on ap2.id_action=a.id inner join profile p2 on  ap2.id_profile=p2.id  and p2.name='?' where a.id =?;   Thanks   ... How write a query in JPA2 with LEFT JOIN on INNER JOIN? SELECT a . description , a . id , ... col_9_0_ from ACTION action0_ left outer join ACTION_PROFILE actionprof1_ on action0_. ID = ...

 
api-jpa

JoinType.LEFT

Left outer join.(Enum Constant of javax.persistence.criteria.JoinType)

 
api-jpa

javax.persistence.criteria.JoinType

Defines the three types of joins.(Enum of JPA)

 
page

ObjectDB Object Database Features

ObjectDB provides a rich set of features, many of them as the result of supporting the JPA and JDO APIs.... FROM (including INNER JOIN , LEFT OUTER JOIN and JOIN FETCH ). WHERE ...

 
forum_thread

LazyInitialization / join fetch

I have a survey that carries the tabla Items . A company has several items , a user charge and technical user also . A specialty has several technical users . Area A has a charge . What happens : When I click the Items table hibernate does all these other queries without me asking . I have a survey that carries the tabla Items . Being a company that has multiple items , a user charge and technical user also . A specialty has several technical users . Area A has a charge . What happens : ... descrica2_2_3_ from the User usuario0_ left outer join on area area1_ usuario0_.codigo_area = area1_.codigo left outer join on ...

 
release

2.4.0

... (by catching unexpected exception). Fixed LEFT [OUTER] JOIN issues (including on mapped by collections). Fixed ...

 
release

2.5.1

... types. Changed JOIN FETCH to act as LEFT JOIN in path expressions. Updated the PDF manual. ... catching unexpected exception). Fixed LEFT [OUTER] JOIN issues (including on mapped by collections). Fixed ...