¿La ruta migratoria funciona con Postgres?

Does flyway work with Postgres?

Flyway supports PostgreSQL Along with 20+ other relational databases.

Here are some common statement to grant access to a PostgreSQL user:

1. Grant CONNECT to the database:
2. Grant USAGE on schema:
3. Grant on all tables for DML statements: SELECT, INSERT, UPDATE, DELETE:
4. Grant all privileges on all tables in the schema:
5. Grant all privileges on all sequences in the schema:

CREATE DATABASE creates a new PostgreSQL database. To create a database, you must be a superuser or have the special CREATEDB privilege.

Transactions. By default, Flyway always wraps the execution of an entire migration within a single transaction. By default transactional and non-transactional statements cannot be mixed within a migration run. You can however allow this by setting the mixed property to true .

2 Answers. Checksum field in Flyway forming a part of verification mechanism ensuring that migration scripts haven’t been changed since they applied to the database. This will guaranty that all instances of your application will have same database structure (content).

Explanation:

1. In the above example we use revoke command to flush privilege, where select and insert are the privilege, where emp is specified table name and sam, jenny are specified user.
2. In this example we flush more than one privilege with more than one user.

Baselines an existing database, excluding all migrations up to and including baselineVersion. Baseline is for introducing Flyway to existing databases by baselining them at a specific version. This will cause Migrate to ignore all migrations up to and including the baseline version.

Any PostgreSQL sql script executed by Flyway, can be executed by the PostgreSQL command-line tool and other PostgreSQL-compatible tools (after the placeholders have been replaced). The driver shipped by default with the Flyway command line is postgresql-42.2.8.jre6.jar. This does not support SCRAM authentication.

DDL exported by pg_dump can be used unchanged in a Flyway migration. Any PostgreSQL sql script executed by Flyway, can be executed by the PostgreSQL command-line tool and other PostgreSQL-compatible tools (after the placeholders have been replaced). The driver shipped by default with the Flyway command line is postgresql-42.2.8.jre6.jar.

As you can see in the log output, Flyway found an empty database and applied the migration script for version 1. Running the migration process from the command line is OK if your operations team updates your application manually.

Flyway provides you several options to run the database migration. You can trigger it as part of your build process, use a command line client or integrate it into your Java application. Thorben is an independent consultant, international speaker, and trainer specialized in solving Java persistence problems with JPA and Hibernate.