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.
2023-02-22
This article explores three key areas that need to be considered to make digital transformation occur: as a response to current changes, in preparation for future changes and to enhance the human experience. Read on to find out more!
2023-02-20
A quick demonstration of using Flyway with Oracle, for those of a nervous disposition. We'll use Flyway to run some migrations on an Oracle Autonomous Database, building the initial version of the database then filling it with development data.
2023-02-15
Digital transformation seems to be on the to-do list of every organization at the moment. Alongside it, DevOps is one of those buzzwords that gets lumped in, with some vague intention of having things automated. If you’re championing a DevOps implementation in your organization, or wish to see where your current processes measure up against your peers, read on.
2023-02-13
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.
2023-02-08
Digital transformation is a buzzword that is often thrown about. But what isn’t discussed in depth, is how DevOps fits into the initiative and what the pitfalls are.
This on-demand session answers these questions and provides actionable takeaways from real-life database deployment automation projects.
You’ll also hear how the key trends in Database DevOps have influenced Flyway product development.
2023-02-06
An overview of the challenges of database testing and test data management, reviewing the different types of database test that need to run during development work, what sort of test data they require, and how to manage all the required data sets, during development, in a way that allows rapid cycles of parallel testing.
2023-02-03
How to create and manage 'stub' objects, in Flyway migrations, in order to overcome build failures caused by circular, or mutual, dependencies between objects in different databases. The technique should be applicable to any RDBMS.
2023-01-30
How to tackle database development in Flyway when databases make cross-server references. The technique uses synonyms to represent the remote objects, and local 'stub' objects to overcome the problems caused by 'missing references' when building the individual objects.
2023-01-27
This article explains step one: migrating our monolithic, centralized repos to Git, then implementing a Release Flow branching strategy for parallel development work streams, and a Pull Request workflow to control an automated build and release process.
2023-01-23
By Brian Kelley
I will be leading an in-person Certified Information Systems Auditor (CISA) exam prep class...
EightKB is back again for 2026! The biggest online SQL Server internals conference is...
By HeyMo0sh
Working in DevOps long enough teaches you two universal truths: That’s exactly why I...
Comments posted to this topic are about the item Fun with JSON II
Comments posted to this topic are about the item Changing Data Types
Comments posted to this topic are about the item Answering Questions On Dropped Columns
I have some data in a table:
CREATE TABLE #test_data
(
id INT PRIMARY KEY,
name VARCHAR(100),
birth_date DATE
);
-- Step 2: Insert rows
INSERT INTO #test_data
VALUES
(1, 'Olivia', '2025-01-05'),
(2, 'Emma', '2025-03-02'),
(3, 'Liam', '2025-11-15'),
(4, 'Noah', '2025-12-22');
If I run this query, how many rows are returned?
SELECT t1.[key] AS row,
t2.*
FROM OPENJSON(
(
SELECT t.* FROM #test_data AS t FOR JSON PATH
)
) t1
CROSS APPLY OPENJSON(t1.value) t2; See possible answers