About join

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JPA Doc
6

javax.persistence.InheritanceType

, Comparable Defines inheritance strategy options. Since: JPA 1.0 InheritanceType JOINED ... than the fields that are common to the parent class, and a join is performed to instantiate the subclass ... that are common to the parent class, and a join is performed to instantiate the subclass. Since: JPA
Issue
6

Issue with UPPER ?

COUNT($1) FROM com.lexware.vereinsverwaltung.verein.mitglied.Mitglied $1 LEFT JOIN $1.mitgliedschaft $2 LEFT JOIN $1.profile $3 LEFT JOIN $3.organisation $4 LEFT JOIN $1.postalAddresses $5 LEFT JOIN $1 ... .Mitglied $1 LEFT JOIN $1.mitgliedschaft $2 LEFT JOIN $1.profile $3 LEFT JOIN $3.organisation $4 LEFT
Issue
5

combined index not used

: (v$1.linkedObjects join v$2). Step 5: Process ObjectProperty (v$3) instances ... .properties join v$3). [Step 5b] Evaluate fields in ObjectProperty (v$3) instances. [Step 5c ... is preferred and can improve performance). Complex heavy queries with several JOIN operations require
JDO Doc
5

Element.serialized

Annotation Element javax.jdo.annotations.Element String serialized Whether the element is to be stored serialized (into a join table) Returns: whether the element is to be stored serialized (into a join table) Default value: "" Since: JDO 2.1
JPA Doc
5

getAttribute()

Method javax.persistence.criteria.Fetch Attribute getAttribute() Return the metamodel attribute corresponding to the fetch join. Returns: metamodel attribute for the join Since: JPA 2.0
JPA Doc
5

getModel()

Method javax.persistence.criteria.PluralJoin PluralAttribute getModel() Return the metamodel representation for the collection-valued attribute corresponding to the join. Returns: metamodel collection-valued attribute corresponding to the target of the join Since: JPA 2.0
JPA Doc
5

getModel()

Method javax.persistence.criteria.PluralJoin PluralAttribute getModel() Return the metamodel representation for the collection-valued attribute corresponding to the join. Returns: metamodel collection-valued attribute corresponding to the target of the join Since: JPA 2.0
JPA Doc
5

getModel()

Method javax.persistence.criteria.PluralJoin PluralAttribute getModel() Return the metamodel representation for the collection-valued attribute corresponding to the join. Returns: metamodel collection-valued attribute corresponding to the target of the join Since: JPA 2.0
JPA Doc
5

getModel()

Method javax.persistence.criteria.PluralJoin PluralAttribute getModel() Return the metamodel representation for the collection-valued attribute corresponding to the join. Returns: metamodel collection-valued attribute corresponding to the target of the join Since: JPA 2.0
JPA Doc
5

getModel()

Method javax.persistence.criteria.PluralJoin PluralAttribute getModel() Return the metamodel representation for the collection-valued attribute corresponding to the join. Returns: metamodel collection-valued attribute corresponding to the target of the join Since: JPA 2.0