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?

Primary Key vs. Clustered Index

In today’s blog posting I want to talk about a very important topic in SQL Server that always confuses people ...


Heap Tables and %%lockres%%

Why the Query Hint NOLOCK is a bad idea

Is a Index Scan always a Index Scan?

The ambiguity of the ORDER BY in SQL Server

SQLpassion Workshops in Fall 2015


Time for a latest SQL Server Quickie:

Upcoming Events

SQL Server Query Tuning Workshop
SQL Server Performance Tuning Workshop

SQLSaturday #434 in Utrecht/Netherlands (September 26, 2015)
SQL Server Days Belgium in Schelle (September 28 – 29, 2015)
SQLdays 2015 in Erding/Germany (October 13 – 14, 2015)
SQLPASS Summit in Seattle/USA (October 27 – 30, 2015)


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