About join

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Manual
13

JPA Query Structure (JPQL / Criteria)

, array, tuple, construct). Criteria FROM (from, join, fetch). Criteria WHERE (where). Criteria
Manual
13

JPA Criteria API Queries

, construct). FROM clause (from, join, fetch). WHERE clause (where). GROUP BY / HAVING clauses (groupBy
Manual
13

UPDATE SET Queries in JPA/JPQL

variable name) for iteration. Multiple variables and JOIN are not supported. The SET clause defines one or
Manual
13

WHERE clause (JPQL / Criteria API)

language from a specified set of languages: SELECT c, l FROM Country c JOIN c.languages l WHERE c
Manual
13

DELETE Queries in JPA/JPQL

cannot include multiple variables and JOIN, and cannot include the GROUP BY, HAVING and ORDER BY clauses
JPA Doc
13

JPA Queries

variables, join and fetch): Other criteria query expressions (for all the query clauses):
JPA Doc
12

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
JPA Doc
12

javax.persistence.PrimaryKeyJoinColumn

get methods) Specifies a primary key column that is used as a foreign key to join to another table. It is used to join the primary table of an entity subclass in the JOINED mapping strategy to the primary table of its superclass; it is used within a SecondaryTable annotation to join a secondary table
JPA Doc
11

JoinColumn.name

column. The table in which it is found depends upon the context. If the join is for a OneToOne or ... of the source entity or embeddable. If the join is for a unidirectional OneToMany mapping using a foreign key mapping strategy, the foreign key is in the table of the target entity. If the join
JPA Doc
11

javax.persistence.AssociationOverride

, 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 ... See Also: Embedded Embeddable MappedSuperclass AttributeOverride JoinColumn[] joinColumns The join