16.7. FROM clause

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A `CriteriaQuery` object defines a query over one or more entity, embeddable, or basic abstract schema types.
The root objects of the query are entities, from which the other types are reached by navigation.

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— JPA Specification, section 6.5.2 Query Roots, pg 262

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All the individual parts of the FROM clause (roots, joins, paths) implement the `javax.persistence.criteria.From` interface.

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