Flyway and SSDT: Merging Work from a Branch

In an SSDT-Flyway hybrid development, the required database changes may be delivered as a DACPAC, but we get far more control over merge operations and deployments if they are done using Flyway migrations. This article demonstrates how to automate as much as possible of the work required to extract a Flyway-compatible migration script from a DACPAC. Read more

Flyway and SSDT: Extracting a DACPAC from a Flyway-managed Database

When you are integrating Flyway into an existing SQL Server SSDT development, you don't necessarily have to change everything at once. The development team might continue to use the SSDT tools, but Flyway will soon take over the deployments. This means that any automated processes will need to be able to handle both DACPACs and Flyway migration scripts with equal grace. In this article, I'll demonstrate how to automatically extract a versioned DACPAC from each new Flyway version of a database. Read more

Recording What’s Changed when Running Oracle Migrations with Flyway

This article uses Flyway and a PowerShell framework to generate a simple JSON model for each new version of an Oracle database, and then compares models to get a high-level 'narrative' of which tables, views or procedures were changed by each Flyway migration. Read more

Undoing Actions on Groups of Database Tables

During development you'll occasionally need an undo script that drops a group of tables, or you might need to truncate a group of tables and then insert fresh data in order to run some tests. Unless you perform the required actions in the correct dependency order, you'll be tripped up by foreign key constraint violations. This article provides a SQL function that returns the list of tables in the correct dependency order. Read more

A Simple Example of Flyway Development using GitHub Branching

This article demonstrates one way to do branch-based database development with Flyway, using GitHub to manage the branches and Flyway configuration files to allow Flyway to switch smoothly between databases, when we move between branches in GitHub. Read more

Setting up for Team-based Database Development using Flyway Desktop

This article provides a simple demonstration of how a small team of developers might set up a Flyway Desktop project to manage, automate, and control database development. Read more

A Real-world Implementation of Database DevOps: People, Processes, Tools

This series of articles describes a path you can take to transforming an existing, manual and error-prone database development and release process into an automated and reliable Database DevOps 'pipeline', starting here with an overview of what we set out to achieve, and the people, processes and tools involved. Read more

Searching a Flyway Database

As a database gets larger, and development more complex, so it becomes increasingly necessary to be able to search for strings in the source files and the database itself. Maybe you need to find when a table first got created, when a foreign key was added, or to find out which tables lack documentation. I'll show you how to answer these sorts of questions by running simple 'wildcard' searches on your Flyway migration files, or source files, as well as more targeted searches on certain parts of your database model. Read more

Increasing the Visibility of Database Changes in Flyway Development

If you save a metadata 'model' for every new version of a database created by Flyway, you can compare the current model to the previous one to see what changed. In turn, you can then generate a database E-R diagram that highlights the changed objects, instantly making those changes visible to other team members. Read more

Cross-RDBMS Version Checks in Flyway

How does one check that a database is definitively at the version that Flyway says it is? Or that a test teardown procedure leaves no trace in the database? Or verify that an undo script returns a database's metadata to that state it should be in for the version to which you're rolling back? This article shows how to do high-level version checks, by comparing JSON models. Read more

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