Product articles
Redgate Flyway Database Deployments
Executing Optional Code in Flyway Callbacks
When you are building or migrating a database, it is nice to have a system that you can easily configure for various tasks, such as logging, loading or dumping data, or backing up of the database. This article demonstrates how we can use a Flyway placeholder as a simple on/off switch for each task, during Flyway migrations. Read moreRollbacks, Undos and Undonts
Rollback scripts are designed to allow us to recover safely from a failed deployment that leaves the database in an indeterminate state. They must check exactly what needs to be reverted before doing so. If you work with an RDBMS that cannot support transaction DDL rollback they are vital. This article proposes a strategy where you create and test a rollback file, at the same time as the forward migration, and reuse it as a Flyway undo script. Read moreThe Uses of Dependency Information in Database Development
Dependency information will allow you to avoid errors during a database build or tear-down, by ensuring you create or remove objects in the right order. It will also help you to avoid future 'invalid object' errors, because it will allow you to check that no database alterations have introduced broken references, during Flyway migrations. Read moreFlyway Database Drift and How it Happens
Flyway's approach to database migrations is based on strict versioning, but there is a limit to what a single process can do to prevent 'drift'. This article explains how drift can happen, and why you also need source control and external processes that log changes, to prevent it. Read moreUsing Flyway Teams with SQL Change Automation PowerShell Cmdlets
Use Flyway to run your database migrations, each time automatically creating a SQL Change Automation release object to provide object-level scripts and a build script for the new version, along with change reports and code analysis reports. Read moreDry Runs for Database Migrations using Flyway
How Dry Run scripts work, and how they can be used to deliver a single-script release artifact to Staging, verify placeholder substitutions in SQL migration scripts, and simplify team code reviews. Read moreCreating Idempotent DDL Scripts for Database Migrations
How to write idempotent DDL scripts that Flyway can run several times on a database, such as after a hotfix has already been applied directly to the production database, without causing errors. Read moreDetecting Database Drift during Flyway Database Development
How to detect database drift prior to running a database migration, so that you can be certain that a database hasn't been subject to any 'uncontrolled' changes that could affect the migration or result in untested changes being deployed to production. Read moreBatch Processing using Flyway
How to create a batch file that executes any number of database migration tasks across a range of servers and databases, using Flyway. Read moreRedgate Hub
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