@Query
@Query is a Spring Data annotation that associates a repository method with an explicitly declared query for retrieving or modifying data.
Java Persistence with Spring Data and Hibernate epub
The @Query annotation is a Spring Data repository-method annotation that declares a query to execute instead of deriving one from the method name.
- How it is used
- Declares custom repository queries when method-name derivation is insufficient or unsuitable.
- How deep it goes
- Defines parameter binding, native-query portability, sorting, projections, SpEL, and runtime validation, but not query execution internals.
- Examples
- Uses UserRepository counts, filtered users, sorting, projections, relationship-table counts, and MongoDB equality, regular-expression, range, and field-selection queries.
- What you can do after
- Apply it via Spring Data repository interfaces to implement parameterized JPQL, SQL, native SQL, or MongoDB queries.
Read how Java Persistence with Spring Data and Hibernate epub explains @Query →
Spring in Action, Sixth Edition
@Query is a Spring Data annotation that associates a repository method with an explicitly specified database query.
- How it is used
- Defines repository queries directly when derived method names become unwieldy or insufficient.
- How deep it goes
- Explains explicit JPA queries and contrasts JDBC SQL requirements, without detailing query parsing or execution internals.
- Examples
- Uses a repository method that retrieves orders delivered in Seattle.
- What you can do after
- Apply @Query to define repository methods for custom JPA queries or Spring Data JDBC SQL queries.
Related concepts
- SQLconfigures · SQL is a standardized declarative language for defining, querying, and manipulating data and structures in relational database systems.
- Spring Expression Languageused by · Spring Expression Language is an expression language integrated with Spring for querying and manipulating object graphs and evaluating values, conditions, and configuration rules.
- query methodconfigures · A query method is a method that defines, constructs, refines, or evaluates a database query.
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