Robert Hartmann

My name is Robert Hartmann. I am an M.Sc Computer Science graduate with a specialization in databases. I've worked as a DBA for 2 years now, and recently earned an MCSA certification in SQL Server 2012. My focus of interests regarding SQL Server lies in in-depth knowledge as well as query optimizing and tuning, though I also sometimes work with SSAS and SSIS. I try to be as simple as possible in my writing in order to reach as many interested readers as I can.
Outside of work, I have a beautiful son and am married enjoying my family. You can follow me on twitter, or simply subscribe to my RSS feed on http://dirtyread.de/.

Blogs

Claude Code Helps Analyze Test Data Manager Log Files

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I had a customer ask about analyzing their Test Data Manager (TDM) usage to...

PowerPoint to HTML with Claude AI

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I had an idea for an animated view of a sales tool, and started...

Don’t Miss Out – SQL Server Query Tuning Fundamentals Starts Next Monday!

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Next Monday, February 9, 2026, my one-day live online training SQL Server Query Tuning...

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Forums

SQL Server 2025 Query Performance Tuning: Troubleshoot and Optimize Query Performance

By Site Owners

Comments posted to this topic are about the item SQL Server 2025 Query Performance...

Is it uncommon for Dev's to have a data model of the source data

By Coffee_&_SQL

This is a generic question. To the moderators, I wasn't sure where to place...

ROLLUP to calculate Month total for all Categories

By Reh23

Good Afternoon, I have built a table with four columns:  Period(Month), Category, Numerator, Denominator....

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Question of the Day

Creating JSON I

On SQL Server 2025, what happens when I run this code:

SELECT JSON_OBJECTAGG( 'City':'Denver')
GO

See possible answers