Hibernate unnecessarily executes ALTER TABLE on TEXT columns in PostgreSQL at every application startup

[Gyeom]

🐛 Bug Description

When using Spring Data JPA with @column(columnDefinition = "TEXT"), Hibernate executes an unnecessary ALTER TABLE statement every time the application starts.

In PostgreSQL, if a column is already of type TEXT, Hibernate should not alter its type repeatedly. However, it keeps executing:

ALTER TABLE example.tbl_product ALTER COLUMN description SET DATA TYPE TEXT;

This behavior is problematic because it introduces unnecessary schema modifications, increases startup time, and might impact performance.

🎯 Expected Behavior

• If the column is already of type TEXT, Hibernate should not execute ALTER TABLE again.
• Schema validation should detect that the column type is unchanged and avoid unnecessary DDL statements.

1️⃣ Entity Code

    @Column(columnDefinition = "TEXT")
    var description: String

2️⃣ application.yml Configuration

spring:
  jpa:
    hibernate:
      ddl-auto: update

🛠 Environment Details

Spring Boot : 3.3.4
Spring Data JPA : 3.3.4
Hibernate : 6.5.3.Final

[quaff]

It's controlled by Hibernate ORM, nothing to do with Spring Data JPA.
Hibernate ORM recommend to use @JdbcTypeCode instead of columnDefinition.

[mp911de]

Please do not file tickets here where you already know that Hibernate is the component responsible for what you're experiencing.