How Can I Ensure Uppercase Table Names Are Used with Hibernate in Spring Boot?

JDBC with Spring Boot: Handling Uppercase Table Names with Hibernate

When mapping entities to tables in a database, it's possible to encounter issues related to case sensitivity. Spring Boot leverages Hibernate for JPA (Java Persistence API) operations, and understanding how Hibernate handles these scenarios is crucial.

In a case where a table entity is defined with uppercase column names, the table name itself may not be properly translated into uppercase during database insertion. Consequently, the table may appear in lowercase in the database, causing issues with data access.

To resolve this issue, the spring.jpa.hibernate.naming_strategy property can be configured to use a different naming strategy. By default, Spring Boot uses org.hibernate.cfg.ImprovedNamingStrategy, which prefers lowercase table names.

An appropriate strategy for this scenario is to use org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl. This strategy maintains the case of table names as defined in the Java entity. To enable this, modify the application.properties file to include the following property:

spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl

By implementing this change, the table name will be preserved in its original uppercase format, resolving the issue of lowercase table creation in the database. This approach allows for seamless interaction with the database while maintaining the case sensitivity of the table names.

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