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FROM clause (JPQL / Criteria API)

as implicit INNER JOIN variables. LEFT [ OUTER ] JOIN To understand the purpose of OUTER JOIN ... query variant: SELECT c, p.name FROM Country c LEFT OUTER JOIN c.capital p The OUTER keyword is optional ( LEFT OUTER JOIN is equivalent to LEFT JOIN ). When you use OUTER JOIN , if a specific outer

Possible issue for JPQL "LEFT [OUTER] JOIN"

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

LEFT (OUTER) JOIN problem when mappedBy is defined

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

jakarta.persistence.criteria.JoinType.LEFT

Jakarta Persistence (JPA) Enum Constant in jakarta.persistence.criteria.JoinType LEFT Left outer join . Since: Jakarta Persistence (JPA) 1.0

Query in JPA2 with LEFT JOIN on INNER JOIN

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

LEFT JOIN FETCH over empty embedded collection returns no results

, 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

multiple LEFT JOINs do not work as expected

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

LazyInitialization / join fetch

descrica2_2_3_ from the User usuario0_ left outer join on area area1_ usuario0_.codigo_area = area1_.codigo left outer join on User usuario2_ usuario0_.codigo_chefe = usuario2_.codigo left outer join company empresa3_ on usuario2_.codigo_empresa = empresa3_.codigo left outer join on specialty especialid4

jakarta.persistence.criteria.Join

Jakarta Persistence (JPA) Interface jakarta.persistence.criteria. Join Type Parameters: - the source type of the join - the target type of the join Super Interfaces: From , Path , FetchParent , Expression , Selection , TupleElement A join to an entity, embeddable, or basic type. Since: Jakarta

jakarta.persistence.criteria.JoinType

(JPA) 1.0 LEFT Left outer join . Since: Jakarta Persistence (JPA) 1.0 RIGHT Right outer join ... , Serializable Defines the three varieties of join . Support for RIGHT outer joins is not required. Applications which make use of right joins might not be portable between providers or between SQL databases

JPQL JOIN FETCH Error

Hello I get an error when executing the following JPQL query: select doi from Doi doi left join fetch doi.metadata metadata left join fetch metadata.titles titles left join fetch metadata.creators creators left join fetch metadata.descriptions descriptions left join fetch metadata.publishers

jakarta.persistence.criteria.CriteriaBuilder.left(Expression,int)

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder Expression left (    Expression x ,    int len ) Create an expression for the leftmost substring of a string, Parameters: x - string expression len - length of the substring to return Returns

jakarta.persistence.criteria.CriteriaBuilder.left(Expression,Expression)

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder Expression left (    Expression x ,    Expression len ) Create an expression for the leftmost substring of a string, Parameters: x - string expression len - length of the substring to return

jakarta.persistence.criteria.CriteriaBuilder

except ( CriteriaSelect left , CriteriaSelect right ) Create a query by (setwise) subtraction of the second ... CriteriaSelect exceptAll ( CriteriaSelect left , CriteriaSelect right ) Create a query by (setwise ... predicate. Since: Jakarta Persistence (JPA) 1.0 CriteriaSelect intersect ( CriteriaSelect left

jakarta.persistence.criteria.Subquery.correlate(Join)

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.Subquery Join correlate (    Join parentJoin ) Create a subquery join object correlated to a join object of the enclosing query. Parameters: parentJoin - join object of the containing query Returns: subquery join . Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.criteria.Join.on(Expression)

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria. Join Join on (    Expression restriction ) 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: restriction

jakarta.persistence.criteria.Join.on(Predicate...)

Jakarta Persistence (JPA) Method in jakarta.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

jakarta.persistence.criteria.Join.getAttribute()

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria. Join Attribute getAttribute() Return the metamodel attribute representing the join target, if any, or null if the target of the join is an entity type. Returns: metamodel attribute or null. Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.criteria.Join.getParent()

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria. Join From getParent() Return the parent of the join . Returns: join parent. Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.criteria.Join.getJoinType()

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria. Join JoinType getJoinType() Return the join type. Returns: join type. Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.criteria.Join.getOn()

Jakarta Persistence (JPA) Method in jakarta.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. Returns: the ON restriction predicate. Since: Jakarta Persistence (JPA) 2.1

jakarta.persistence.InheritanceType.JOINED

Jakarta Persistence (JPA) Enum Constant in jakarta.persistence.InheritanceType JOINED A table for each abstract or concrete entity class, with only the columns mapped to persistent fields ... instance might be stored across multiple table rows. A join is used to retrieve the state of such entities. Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.criteria.PluralJoin

: - the source type - the element type of the collection - the collection type Super Interfaces: Join ... functionality that is common to joins to all collection types. It is not intended to be used directly in ... ) Create a fetch join to the specified single-valued attribute using an inner join . Inherited from

jakarta.persistence.criteria.MapJoin

: - the source type of the join - the type of the target Map value - the type of the target Map key Super Interfaces: PluralJoin , Join , From , Path , FetchParent , Expression , Selection , TupleElement The MapJoin interface is the type of the result of joining to a collection over an association or element

jakarta.persistence.criteria.SetJoin

: - the source type of the join - the element type of the target Set Super Interfaces: PluralJoin , Join ... of the result of joining to a collection over an association or element collection ... a fetch join to the specified single-valued attribute using an inner join . Inherited from

jakarta.persistence.criteria.CollectionJoin

: - the source type of the join - the element type of the target Collection Super Interfaces: PluralJoin , Join , From , Path , FetchParent , Expression , Selection , TupleElement The CollectionJoin interface is the type of the result of joining to a collection over an association or element collection

jakarta.persistence.criteria.ListJoin

: - the source type of the join - the element type of the target List Super Interfaces: PluralJoin , Join ... of the result of joining to a collection over an association or element collection ... ) Create a fetch join to the specified single-valued attribute using an inner join . Inherited from

jakarta.persistence.criteria.From

, but may also be an embeddable belonging to an entity in the from clause. Serves as a factory for Join s of associations ... . Since: Jakarta Persistence (JPA) 3.2 Fetch fetch ( SingularAttribute attribute ) Create a fetch join to the specified single-valued attribute using an inner join . Inherited from FetchParent Parameters

jakarta.persistence.criteria.Root

fetch ( SingularAttribute attribute ) Create a fetch join to the specified single-valued attribute using an inner join . Inherited from FetchParent Parameters: attribute - target of the join Returns: the resulting fetch join . Since: Jakarta Persistence (JPA) 1.0 Fetch fetch ( SingularAttribute

TypedQuery implementation problems

)" + " from Account acct" + " left outer join AccountTransaction att on acct.id = att.accountId" + " left outer join Transaction trans on att.transactionId = trans.id" + " left outer join AccountGroup ag on acct.accountGroupId = ag.id" + " left outer join AccountType at on at.id = ag.accountType" + " group

jakarta.persistence.criteria.CriteriaQuery

order. The left -to-right sequence of the ordering expressions determines the precedence ... from a get or join operation and the query result type is specified. For example: CriteriaQuery q = cb ... ").get("state")); CriteriaQuery q2 = cb.createQuery(Product.class); q2.select(q2.from(Order.class) . join

jakarta.persistence.criteria.Fetch

: - the source type of the fetch - the target type of the fetch Super Interfaces: FetchParent Represents a join ... fetch ( SingularAttribute attribute ) Create a fetch join to the specified single-valued attribute using an inner join . Inherited from FetchParent Parameters: attribute - target of the join Returns

Strings in JPQL and Criteria Queries

( _ ), which matches any single character. The left operand is the string to check for a match (usually

jakarta.persistence.criteria.FetchParent

( SingularAttribute attribute ) Create a fetch join to the specified single-valued attribute using an inner join . Parameters: attribute - target of the join Returns: the resulting fetch join . Since: Jakarta Persistence (JPA) 1.0 Fetch fetch ( SingularAttribute attribute , JoinType jt ) Create a fetch join

jakarta.persistence.criteria.Subquery

of the containing query Returns: subquery root. Since: Jakarta Persistence (JPA) 1.0 Join correlate ( Join parentJoin ) Create a subquery join object correlated to a join object of the enclosing query. Parameters: parentJoin - join object of the containing query Returns: subquery join . Since: Jakarta

jakarta.persistence.criteria.JoinType.RIGHT

Jakarta Persistence (JPA) Enum Constant in jakarta.persistence.criteria.JoinType RIGHT Right outer join . Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.JoinColumn

: Annotation Target: Method, Field Specifies a column for joining an entity association or element collection. If the JoinColumn annotation itself is defaulted, a single join column is assumed ... Customer class @OneToMany @JoinColumn(name = "CUST_ID") // join column is in the table for Order

jakarta.persistence.MapKeyJoinColumn

key join column is in the collection table, join table, or table of the target entity that is used to represent the map. If no MapKeyJoinColumn annotation is specified, a single join column is assumed ... upon the context. If the join is for a map key for an element collection, the foreign key column is in

jakarta.persistence.EntityManager

manager is joined to an active transaction, the persistence context remains managed ... if invoked on an entity manager which has not been joined to the current transaction and a lock mode ... if invoked on an entity manager which has not been joined to the current transaction and a lock mode

Issue with full cross joins

hi, There seems to be an issue with full cross joins & maps. This query: SELECT  $1 FROM com.lexware.vereinsverwaltung.verein.mitglied.Mitglied  $1 LEFT JOIN $1.qubletFRAGMENTMAP $4,   ... Alexander Adam It seems that simple iteration on map values in JOIN has not been implemented and a map

SELECT clause (JPQL / Criteria API)

directly. However, you can add their content to the SELECT clause by using a bound JOIN variable in

JPA Query Structure (JPQL / Criteria)

( select , distinct , multiselect , array , tuple , construct ) Criteria FROM ( from , join , fetch

JPA Queries

clause, representing roots, joins , and fetches. General expressions used within query logic, such as

DELETE Queries in JPA/JPQL

cannot include multiple variables, JOIN clauses, or the GROUP BY , HAVING , and ORDER BY clauses

What are the main benefits of using ObjectDB?

that ability and require multiple tables, multiple records and join operations in order to support

WHERE clause (JPQL / Criteria API)

and an official language from a specified set of languages: SELECT c, l FROM Country c JOIN c.languages l

jakarta.persistence.JoinTable

: Annotation Target: Method, Field Specifies the mapping of an association to an intermediate join table. It is applied to the owning side of an association. A join table is typically used in the mapping ... , and one-to-one associations (both bidirectional and unidirectional). When a join table is used in mapping

jakarta.persistence.AssociationOverride

mapping is a foreign key mapping, the joinColumns element is used. If the relationship mapping uses a join table, the joinTable element must be specified to override the mapping of the join table and/or its join columns. Example 1: Overriding the mapping of a relationship defined by a mapped superclass

jakarta.persistence.TypedQuery

the persistence context has not been joined to the transaction. QueryTimeoutException - if the statement ... and there is no transaction or the persistence context has not been joined to the transaction ... other than NONE has been set and there is no transaction or the persistence context has not been joined

[ODB1] Chapter 9 - ObjectDB Explorer

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