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?

Indexes on VARCHAR Columns

Years ago I wrote about how SQL Server stores VARCHAR columns in the Navigation Structure of an index. As you ...


sys.dm_exec_input_buffer in SQL Server 2016

Disabling Clustered Indexes in SQL Server – a really good idea?

Linus Torvalds joins Microsoft!

Clustered Indexes – Advantages & Disadvantages

Clustered ColumnStore Indexes – Space Savings


Time for a latest SQL Server Quickie:

Upcoming Events

SQL Server Query Tuning Workshop
SQL Server Performance Tuning Workshop

SQLSaturday #494, April 1 in Vienna/Austria
DevWeek, April 18 to 22 in London/United Kingdom
SQL Nexus, May 2 to 4 in Copenhagen/Denmark
SQLBits, May 4 to 7 in Liverpool/United Kingdom


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