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implicit INNER JOIN variables. LEFT [ OUTER ] JOIN To understand the purpose of OUTER JOIN , consider ... FROM Country c LEFT OUTER JOIN c.capital p The OUTER keyword is optional ( LEFT OUTER JOIN is equivalent to LEFT JOIN ). When using OUTER JOIN , if a specific outer variable does not have any matching

Possible issue for JPQL " LEFT [ OUTER ] JOIN " is doing "[INNER] JOIN ".   Thanks. eurojet P. F ... ;   - "SELECT a,b FROM A a LEFT OUTER JOIN a.listB b WHERE b IS NULL" where the output ... -valued field.     - "SELECT a,b FROM A a LEFT OUTER JOIN a.listB b WHERE b.id IS NULL

this query: "SELECT i FROM Invoice i LEFT OUTER JOIN i.itemList items" But this query never returns ... (); Query query = em.createQuery( "SELECT i FROM Invoice i LEFT OUTER JOIN i.itemList items"); List ... , LEFT JOIN works correctly. Is this normal behaviour? Thank you Michael   Sample application public

, max) - for paging. Query Structure SELECT (including NEW ). FROM (including INNER JOIN , LEFT OUTER ... ( composite ) indices. Collection and array elements are indexable (extremely fast JOIN queries ... optimizations. Configurable JPA eager/lazy fetch  and JPA query FETCH JOIN . Configurable JDO fetch

How write a 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

Hello, I'm a little bit confused about a left join fetch behaviour. In this test case, i try to fetch my 3 children using a left join fetch. But my collection is null after closing the em ... ();         // Try to retrieve parent and children using left join fetch

, but I attempt to LEFT JOIN FETCH all the members of a collection within a (non-existent) member ... works (returns my instance of C): SELECT c FROM C c LEFT JOIN FETCH c.bList WHERE id=:id; But if I include the full nested fetch, it fails, returning an empty result list: SELECT c FROM C c LEFT JOIN

JPA Enum Constant in javax.persistence.criteria.JoinType LEFT Left outer join . Since: JPA 2.0

looks like this: SELECT DISTINCT $1 FROM Organisation $1 JOIN $1.attributeList $2 LEFT JOIN $1.parentOrg $3 LEFT JOIN $3.parentOrg $4 WHERE ((($2.name='Attribute1') AND ($2.valueAsString='1')) AND (($3.organisationId='root') OR ($4.organisationId='root'))) As I understand, since I use LEFT Joins

database automatically. Tabbed Windows Three tabbed windows are displayed on the left ... ]  window on the left side enables execution of JPQL and JDOQL queries. To execute a query: Enter ... Explorer components. Select one or more elements on the left side and then use the combo boxes on the right

.JoinType Defines the three types of joins . Right outer joins and right outer fetch joins are not required to be supported. Applications that use RIGHT join types will not be portable. Since: JPA 2.0 Enum Constants INNER Inner join . Since: JPA 2.0 LEFT Left outer join . Since: JPA 2.0 RIGHT Right outer

JPA Interface Join Type Parameters: - the source type of the join - the target type of the join A join to an entity, embeddable, or basic type. Since: JPA 2.0 The FROM clause (JPQL / Criteria API) article explains how to use Join . Public Methods Attribute getAttribute () Return the metamodel

the equivalent JOIN query. Entity Type Expressions The TYPE operator (which is new in JPA 2) returns the type ... its subinterfaces ( From , Root , Join and Join 's descendants). Path Expressions The Root and Join interfaces ... Variable Paths: Root country = query. from (Country.class); Join neighborCountry = country. join

. The underscore character ( _ ) - which matches any single character. The left operand

JPA Method in javax.persistence.criteria.From Join join (    SingularAttribute  attribute,     JoinType  jt ) Create a join to the specified single-valued attribute using the given join type. Parameters: attribute - target of the join jt - join type Return: the resulting join Since: JPA 2.0

JPA Method in javax.persistence.criteria.CriteriaBuilder Join treat (    Join   join ,    Class  type ) Downcast Join object to the specified type. Parameters: join - Join object type - type to be downcast to Return: Join object of the specified type Since: JPA 2.1

JPA Method in javax.persistence.criteria.From Join join (   String attributeName,     JoinType  jt ) Create a join to the specified attribute using the given join type. Parameters: attributeName - name of the attribute for the target of the join jt - join type

JPA Method in javax.persistence.criteria.From MapJoin join (    MapAttribute  map,     JoinType  jt ) Create a join to the specified Map-valued attribute using the given join type. Parameters: map - target of the join jt - join type Return: the resulting join Since: JPA 2.0

JPA Method in javax.persistence.criteria.From SetJoin join (    SetAttribute  set,     JoinType  jt ) Create a join to the specified Set-valued attribute using the given join type. Parameters: set - target of the join jt - join type Return: the resulting join Since: JPA 2.0

JPA Method in javax.persistence.criteria.From ListJoin join (    ListAttribute  list,     JoinType  jt ) Create a join to the specified List-valued attribute using the given join type. Parameters: list - target of the join jt - join type Return: the resulting join Since: JPA 2.0

JPA Method in javax.persistence.criteria.From CollectionJoin join (    CollectionAttribute  collection,     JoinType  jt ) Create a join to the specified Collection-valued attribute using the given join type. Parameters: collection - target of the join jt - join type Return: the resulting join Since: JPA 2.0

variables (bound by an entity class) are represented by the Root subinterface: Join variables (bound by an attribute of a preceding variable in the FROM clause) are represented by the Join subinterface ... and examples. Join Fetch Elements Join Fetch is managed in criteria queries by the following interfaces

JPA Method in javax.persistence.criteria.From Join join (    SingularAttribute  attribute ) Create an inner join to the specified single-valued attribute. Parameters: attribute - target of the join Return: the resulting join Since: JPA 2.0

JPA Method in javax.persistence.criteria. Join Join on (   Predicate... restrictions ) Modify the join to restrict the result according to the specified ON condition and return the join object. Replaces the previous ON condition, if any. Parameters: restrictions - zero or

JPA Method in javax.persistence.criteria. Join Join on (    Expression  restriction ) Modify the join to restrict the result according to the specified ON condition and return the join ... boolean expression Return: the modified join object Since: JPA 2.1

JPA Method in javax.persistence.criteria.From Join join (   String attributeName ) Create an inner join to the specified attribute. Parameters: attributeName - name of the attribute for the target of the join Return: the resulting join Throws: IllegalArgumentException - if attribute of the given name does not exist Since: JPA 2.0

JPA Method in javax.persistence.criteria.From SetJoin join (    SetAttribute  set ) Create an inner join to the specified Set-valued attribute. Parameters: set - target of the join Return: the resulting join Since: JPA 2.0

JPA Method in javax.persistence.criteria.From CollectionJoin join (    CollectionAttribute  collection ) Create an inner join to the specified Collection-valued attribute. Parameters: collection - target of the join Return: the resulting join Since: JPA 2.0

JPA Method in javax.persistence.criteria.From ListJoin join (    ListAttribute  list ) Create an inner join to the specified List-valued attribute. Parameters: list - target of the join Return: the resulting join Since: JPA 2.0

JPA Method in javax.persistence.criteria.From MapJoin join (    MapAttribute  map ) Create an inner join to the specified Map-valued attribute. Parameters: map - target of the join Return: the resulting join Since: JPA 2.0

JPA Method in javax.persistence.criteria. Join Attribute getAttribute () Return the metamodel attribute corresponding to the join . Return: metamodel attribute corresponding to the join Since: JPA 2.0

JPA Method in javax.persistence.criteria. Join From getParent () Return the parent of the join . Return: join parent Since: JPA 2.0

JPA Method in javax.persistence.criteria. Join JoinType getJoinType () Return the join type. Return: join type Since: JPA 2.0

JPA Method in javax.persistence.criteria.CriteriaBuilder MapJoin treat (    MapJoin   join ,    Class  type ) Downcast MapJoin object to the specified type. Parameters: join - MapJoin object type - type to be downcast to Return: MapJoin object of the specified type Since: JPA 2.1

JPA Method in javax.persistence.criteria.CriteriaBuilder ListJoin treat (    ListJoin   join ,    Class  type ) Downcast ListJoin object to the specified type. Parameters: join - ListJoin object type - type to be downcast to Return: ListJoin object of the specified type Since: JPA 2.1

JPA Method in javax.persistence.criteria. Join Predicate getOn () Return the predicate that corresponds to the ON restriction(s) on the join , or null if no ON condition has been specified. Return: the ON restriction predicate Since: JPA 2.1

JPA Method in javax.persistence.criteria.CriteriaBuilder SetJoin treat (    SetJoin   join ,    Class  type ) Downcast SetJoin object to the specified type. Parameters: join - SetJoin object type - type to be downcast to Return: SetJoin object of the specified type Since: JPA 2.1

JDO Annotation Attribute in javax.jdo.annotations. Join String outer default "" Whether to use an outer join . Since: JDO 2.1

indexed default "" Whether the join column is indexed. Since: JDO 2.1 String outer default "" Whether to use an outer join . Since: JDO 2.1 String primaryKey default "" Name for a generated primary key ... JDO Annotation Join Target: ElementType.TYPE, ElementType.FIELD, ElementType.METHOD Implemented

Windows Four tabbed windows are displayed on the left side of the Explorer desktop when a database ... that affect viewer windows. Executing JDOQL queries The "Query" tabbed window on the left ... Remote | Browse". Class Management The "Class" tabbed window on the left side of the Explorer desktop

JDO Annotation Joins Target: ElementType.TYPE Implemented Interfaces: Annotation Annotation for a group of joins . Since: JDO 2.1 Public Annotation Attributes Join [] value default null The join definitions used for the mapping of this type. Joins for secondary tables are usually defined

JDO Annotation Attribute in javax.jdo.annotations. Joins Join [] value default null The join definitions used for the mapping of this type. Joins for secondary tables are usually defined at the type ... the same join definition and avoid redundancies. Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations. Join Column [] columns default {} Detail definition of the join column(s). This is needed for more than one join column. Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations. Join String table default "" Table to join to (used when joining to secondary tables). Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations. Join String generateForeignKey default "" Generate or assume a foreign key constraint exists on the column or columns associated with this join . Specify "true" or "false". Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations. Join ForeignKeyAction deleteAction default ForeignKeyAction.UNSPECIFIED Delete action to be applied to any ForeignKey on this join . Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations. Join String generatePrimaryKey default "" Generate or assume a primary key constraint exists on the column or columns associated with this join . Specify "true" or "false". Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations. Join String unique default "" Whether the join column is unique. Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations. Join String indexed default "" Whether the join column is indexed. Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations. Join String column default "" Name of the column in the join table. Since: JDO 2.1