Kevin3NF

Kevin Hill is a career SQL Server DBA living in Dallas, TX. His specialities include HA/DR, Best Practice configuration, Performance tuning and teaching new and accidental DBAs
  • Interests: Cycling, family, sci-fi, DBA stuff

Blog Post

SQL Server Wait Stats

Everything in SQL Server is waiting for something…this is by design. And most people never think about it… Until your application is waiting to complete its request, sell the...

2025-04-30 (first published: )

388 reads

Blog Post

The Cost of Not Having a DBA

Does skipping a DBA save money? Wait until your system grinds to a halt, your backups fail, or your cloud bill skyrockets. The “DBA? We Don’t Need No Stinkin’...

2025-04-14 (first published: )

595 reads

Blog Post

SQL Server Time Bombs

Common Reasons for Emergency SQL calls If you are a production DBA (or Accidental prod DBA) you’ve gotten that frantic call in the middle of the night. Or maybe...

2025-03-12 (first published: )

549 reads

Blogs

AI: Blog a Day – Day 4: Transformers – Encoder, Decoder, and Attention

By

Continuing from Day 3 where we covered LLM models open/closed and their parameters, Today...

Flyway Tips: Multiple Projects

By

One of the nice things about Flyway Desktop is that it helps you manage...

What DevOps Look Like in Microsoft Fabric

By

Microsoft Fabric (not to be confused with the more general term “fabric” in DevOps)...

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Forums

Can an Azure App Service Managed Identity be used for SQL Login?

By jasona.work

I'm fairly certain I know the answer to this from digging into it yesterday,...

Azure Synapse database refresh

By Sreevathsa Mandli

Hi Team, I am trying to refresh the Azure Synapse Dedicated pool from production...

how to write this query?

By water490

hi everyone I am not sure how to write the query that will produce...

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Question of the Day

Fun with JSON I

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 *
FROM OPENJSON(
     (
         SELECT t.* FROM #test_data AS t FOR JSON PATH
     )
             ) t;

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