For SQL Server, linking Spring Data JPA to a sequence (such as hibernate_sequence) defined in DDL involves a similar approach with some adjustments specific to SQL Server's syntax and capabilities. Here's how you can achieve this:

1. DDL Sequence Creation: First, ensure you have a sequence created in your SQL Server database. The SQL syntax for creating a sequence in SQL Server is slightly different from other databases. Here's an example:

   CREATE SEQUENCE hibernate_sequence 
       START WITH 1 
       INCREMENT BY 1;
   

2. Entity Configuration: You'll need to annotate your entity class to use the hibernate_sequence for generating its primary key values. In Spring Data JPA, you use the @GeneratedValue annotation with GenerationType.SEQUENCE and specify the sequence name using @SequenceGenerator.

   import javax.persistence.*;
   
   @Entity
   public class MyEntity {
       @Id
       @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "entity_seq_generator")
       @SequenceGenerator(name = "entity_seq_generator", sequenceName = "hibernate_sequence", allocationSize = 1)
       private Long id;
   
       // other fields and methods
   }
   

   In this configuration:

   • strategy = GenerationType.SEQUENCE indicates that the primary key values should be generated using a database sequence.
   • generator = "entity_seq_generator" defines a name for the generator.
   • sequenceName = "hibernate_sequence" specifies the name of the sequence to use, which should match the sequence name defined in your SQL Server database.
   • allocationSize = 1 is set to ensure that IDs are allocated one at a time from the sequence.

3. Spring Data JPA Repository: Define a repository interface for your entity. This is where you define methods for saving, deleting, and querying your entities.

   import org.springframework.data.jpa.repository.JpaRepository;
   
   public interface MyEntityRepository extends JpaRepository<MyEntity, Long> {
   }
   

4. Application Properties: Configure your application.properties or application.yml file for SQL Server. Ensure you have the correct JDBC URL, username, and password for your database.

   spring.datasource.url=jdbc:sqlserver://localhost;databaseName=mydatabase
   spring.datasource.username=myuser
   spring.datasource.password=mypassword
   spring.jpa.hibernate.ddl-auto=update
   

5. Bootstrap Application: With your entity, repository, and application properties configured, you can now run your Spring Boot application. When you save entities using the repository, Spring Data JPA will use the hibernate_sequence defined in your SQL Server database to generate unique primary key values.

Remember, the exact configuration details (like JDBC URL format, database name, username, and password) will vary based on your SQL Server setup. Ensure these are correctly set in your application's configuration.