Kenneth Fisher

My name is Kenneth Fisher and I am Senior DBA for a large (multi-national) insurance company. I have been working with databases for over 20 years starting with Clarion and Foxpro. I’ve been working with SQL Server for 12 years but have only really started “studying” the subject for the last 3. I don’t have any real "specialities" but I enjoy trouble shooting and teaching. Thus far I’ve earned by MCITP Database Administrator 2008, MCTS Database Administrator 2005, and MCTS Database Developer 2008. I’m currently studying for my MCITP Database Developer 2008 and should start in on the 2012 exams next year. My blog is at https://sqlstudies.com/.

Physical Join Operators by Ami Levin

by Kenneth Fisher

SQLStudies

For those who don’t know the three physical join operators are Hash Match, Loop Join and Nested Loops. Understanding these...

2013-11-06

672 reads

Adding a column to a table with a default (NULL vs NOT NULL)

by Kenneth Fisher

SQLStudies

There are lots of ways to learn new things, or be reminded of old things. One of my favorites is...

2013-11-05 (first published: 2013-10-30)

5,168 reads

A look at comments

by Kenneth Fisher

SQLStudies

Everyone knows that we should include comments in our code right? On the other hand the vast majority of us...

2013-10-29 (first published: 2013-10-21)

1,737 reads

Change in SQL 2012 SSMS grid output behavior

by Kenneth Fisher

SQLStudies

It’s one of those things that always aggravated me but not really enough to complain about. When you run a...

2013-10-28

693 reads

Unexpected truncation in FETCH

by Kenneth Fisher

SQLStudies

Yes I’m talking about FETCH as in a cursor, yes everyone hates cursors. But you know cursors are like anything...

2013-10-23

718 reads

I’ve refreshed a test database from prod but now the users can’t access it.

by Kenneth Fisher

SQLStudies

This happens to me all the time. I get a request from a developer to overwrite the test copy of...

2013-10-16 (first published: 2013-10-09)

2,666 reads

Query to compare indexes between two tables

by Kenneth Fisher

SQLStudies

We have a set of databases at my office that use the load and swap method of loading data with...

2013-10-16

1,205 reads

Why you should know how to script as well as use the GUI

by Kenneth Fisher

SQLStudies

Personally I’ve always enjoyed learning the T-SQL for any given task. The GUI is usually pretty easy to figure out...

2013-10-14

1,008 reads

Use TOP instead of SET ROWCOUNT

by Kenneth Fisher

SQLStudies

Both TOP and SET ROWCOUNT are both valid methods of limiting the result sets from a query. They are however...

2013-10-10 (first published: 2013-10-07)

3,974 reads

T-SQL Tuesday #47: Your Best SQL Server SWAG

by Kenneth Fisher

SQLStudies

It’s time for T-SQL Tuesday again and this time Kendal Van Dyke is asking for Your Best SQL Server SWAG....

2013-10-08

748 reads

Blogs

AI: Blog a Day – Day 5: Notebooks, Hugging face models and Fine Tuning

By Vinay Thakur

Continuing from Day 4 where we learned Encoder, Decoder, and Attention Mechanism, today we...

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

By Vinay Thakur

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

Flyway Tips: Multiple Projects

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

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Forums

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

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?

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