I'm Klaus Aschenbrenner

I help people to bring their sql server installations to a new level of excellence.

“Klaus resolved our performance problems quickly and easily and gave us perfect guidance to avoid them in the future.” Michael from Mannheim, Germany

SQLpassion Offerings

SQLpassion, a European SQL Server consulting company, provides high-quality SQL Server consulting services. We are based in Vienna, Austria, but our client base is spread across the continent. We provide the following SQL Server services:

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You have seen my Blog Postings?

SQLpassion Online Trainings in July 2017

Today I’ve announced my SQLpassion Online Trainings for July 2017. On July 4 I’m doing again a free webcast from ...


Tracking Lookup Operations in SQL Server

How to calculate RAID 5 Parity Information

Cardinality Estimation Limitations

Do you ever wanted to know how a simple CPU is actually implemented?

SQLpassion Online Trainings in May 2017


Time for a latest SQL Server Quickie:

Upcoming Events

Webcast: Troubleshooting Latches in SQL Server, May 15
Webinar: SQL Server Performance Troubleshooting, May 16
SQL Server Query Tuning Workshop
SQL Server Performance Tuning Workshop


SQL Nexus, May 1 – 3 in Copenhagen/Denmark
Techorama, May 22 – 24 in Antwerp/Belgium
SQLDays, October 9 – 12 in Erding/Germany


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