Bert Wagner

Bert Wagner is a Business Intelligence Developer at Progressive Insurance. He enjoys solving challenging data transformations with T-SQL and optimizing for query performance. In addition to BI development, Bert loves building ASP.NET MVC web apps and building Internet of Things projects.

Blog Post

COUNT, DISTINCT, and NULLs

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One thing I see fairly often (and am occasionally guilty of myself) is using COUNT(DISTINCT) and DISTINCT interchangeably to get an idea of the...

2019-02-19

11 reads

Blog Post

Parsing HTML in SQL Server

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Recently I was asked how to parse text out of an HTML fragment stored in SQL Server.
Over the next few seconds my brain processed...

2019-02-12

5 reads

Blog Post

Parsing HTML in SQL Server

Watch this week's video on YouTube
Recently I was asked how to parse text out of an HTML fragment stored in SQL Server.
Over the next few seconds my brain processed...

2019-02-12

4 reads

Blog Post

Why make?

This post is a response to this month's T-SQL Tuesday #111 prompt by Andy Leonard.  T-SQL Tuesday is a way for the SQL Server community to share ideas about...

2019-02-12

3 reads

Blog Post

Why make?

This post is a response to this month's T-SQL Tuesday #111 prompt by Andy Leonard.  T-SQL Tuesday is a way for the SQL Server community to share ideas about...

2019-02-12

3 reads

Blogs

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

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

Flyway Tips: Multiple Projects

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

What DevOps Look Like in Microsoft Fabric

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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;

See possible answers