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Merge branch '2.2.x'
Closes gh-21119
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85a3fcfb5e
@ -1946,7 +1946,7 @@ For example, you might choose to set it to the vendor name of the database (`hsq
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[NOTE]
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====
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Spring Boot automatically creates the schema of an embedded `DataSource`.
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When only basic SQL scripts are used, Spring Boot automatically creates the schema of an embedded `DataSource`.
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This behavior can be customized by using the configprop:spring.datasource.initialization-mode[] property.
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For instance, if you want to always initialize the `DataSource` regardless of its type:
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@ -1954,15 +1954,24 @@ For instance, if you want to always initialize the `DataSource` regardless of it
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----
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spring.datasource.initialization-mode=always
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----
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In a JPA-based app, you can choose to let Hibernate create the schema or use `schema.sql`, but you cannot do both.
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Make sure to disable `spring.jpa.hibernate.ddl-auto` if you use `schema.sql`.
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[indent=0,subs="verbatim,quotes,attributes"]
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----
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spring.jpa.hibernate.ddl-auto=none
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----
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If you are using a <<spring-boot-features.adoc#howto-use-a-higher-level-database-migration-tool,Higher-level Database Migration Tool>>, like Flyway or Liquibase, you cannot use basic SQL scripts to create and initialize the schema.
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In this situation, if `schema.sql` and `data.sql` are present, they will be ignored.
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It is not possible to use a Database Migration Tool to manage schema creation, and a basic SQL script to initialize it.
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====
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By default, Spring Boot enables the fail-fast feature of the Spring JDBC initializer.
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This means that, if the scripts cause exceptions, the application fails to start.
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You can tune that behavior by setting `spring.datasource.continue-on-error`.
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NOTE: In a JPA-based app, you can choose to let Hibernate create the schema or use `schema.sql`, but you cannot do both.
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Make sure to disable `spring.jpa.hibernate.ddl-auto` if you use `schema.sql`.
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[[howto-initialize-a-database-using-r2dbc]]
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@ -2071,6 +2080,13 @@ With that setup, migrations in `dev/db/migration` run only when the `dev` profil
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==== Execute Liquibase Database Migrations on Startup
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To automatically run Liquibase database migrations on startup, add the `org.liquibase:liquibase-core` to your classpath.
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[NOTE]
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====
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When you add the `org.liquibase:liquibase-core` to your classpath, database migrations run by default for both during application startup and before your tests run.
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This behavior can be customized by using the configprop:spring.liquibase.enabled[] property, setting different values in the `main` and `test` configurations.
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It is not possible to use two different ways to initialize the database (e.g. Liquibase for application startup, JPA for test runs).
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====
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By default, the master change log is read from `db/changelog/db.changelog-master.yaml`, but you can change the location by setting `spring.liquibase.change-log`.
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In addition to YAML, Liquibase also supports JSON, XML, and SQL change log formats.
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@ -2079,7 +2095,7 @@ If you need to use a different `DataSource`, you can create one and mark its `@B
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If you do so and you want two data sources, remember to create another one and mark it as `@Primary`.
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Alternatively, you can use Liquibase's native `DataSource` by setting `spring.liquibase.[url,user,password]` in external properties.
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Setting either `spring.liquibase.url` or `spring.liquibase.user` is sufficient to cause Liquibase to use its own `DataSource`.
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If any of the three properties has not be set, the value of its equivalent `spring.datasource` property will be used.
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If any of the three properties has not been set, the value of its equivalent `spring.datasource` property will be used.
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See {spring-boot-autoconfigure-module-code}/liquibase/LiquibaseProperties.java[`LiquibaseProperties`] for details about available settings such as contexts, the default schema, and others.
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