About INNER JOIN

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JPA Doc
48

join(attributeName)

Method 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 Returns: the resulting join Throws: IllegalArgumentException - if attribute of the given name does not exist Since: JPA 2.0
JPA Doc
48

javax.persistence.criteria.From

an inner join. Create a fetch join to the specified attribute using an inner join. Parameters ... collection-valued attribute using an inner join. Create a fetch join to the specified collection-valued attribute using an inner join. Parameters: attribute - target of the join Returns
JPA Doc
48

javax.persistence.criteria.Root

> fetch(String attributeName) Create a fetch join to the specified attribute using an inner join. Create a fetch join to the specified attribute using an inner join. Parameters: attributeName - name ... attribute using an inner join. Create a fetch join to the specified collection-valued attribute
JPA Doc
47

join(collection)

Method javax.persistence.criteria.From CollectionJoin join(   CollectionAttribute collection ) Create an inner join to the specified Collection-valued attribute. Parameters: collection - target of the join Returns: the resulting join Since: JPA 2.0
JPA Doc
47

join(list)

Method javax.persistence.criteria.From ListJoin join(   ListAttribute list ) Create an inner join to the specified List-valued attribute. Parameters: list - target of the join Returns: the resulting join Since: JPA 2.0
JPA Doc
47

join(map)

Method javax.persistence.criteria.From MapJoin join(   MapAttribute map ) Create an inner join to the specified Map-valued attribute. Parameters: map - target of the join Returns: the resulting join Since: JPA 2.0
JPA Doc
47

join(set)

Method javax.persistence.criteria.From SetJoin join(   SetAttribute set ) Create an inner join to the specified Set-valued attribute. Parameters: set - target of the join Returns: the resulting join Since: JPA 2.0
Result
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ObjectDB Object Database Features [2018-01-27]

(including INNER JOIN, LEFT OUTER JOIN and JOIN FETCH). WHERE (with both JPQL and JDOQL expressions ... elements are indexable (extremely fast JOIN queries). Map keys and values are indexable. Nested paths ... query FETCH JOIN. Configurable JDO fetch groups. Ease of Use and Learning ObjectDB is very simple
Result
28

ObjectDB Object Database Features [2018-10-27]

(including INNER JOIN, LEFT OUTER JOIN and JOIN FETCH). WHERE (with both JPQL and JDOQL expressions ... elements are indexable (extremely fast JOIN queries). Map keys and values are indexable. Nested paths ... query FETCH JOIN. Configurable JDO fetch groups. Ease of Use and Learning ObjectDB is very simple
Result
28

ObjectDB Object Database Features

(first, max) - for paging. Query Structure SELECT (including NEW). FROM (including INNER JOIN, LEFT ... (extremely fast JOIN queries). Map keys and values are indexable. Nested paths inside embedded objects ... Automatic pre-loading optimizations. Configurable JPA eager/lazy fetch and JPA query FETCH JOIN