Author Archives: Kathi Kellenberger

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About Kathi Kellenberger

I am the editor of the online journal Simple Talk. I love talking about SQL Server to anyone who will listen, just ask my seven year old granddaughter. I love to write and teach. I am so humbled and honored to say I am a former Data Platform MVP.

When the Performance of LAG Lags Behind

Posted on 2014/12/07 by Kathi Kellenberger

My favorite T-SQL windowing functions are LAG and LEAD. LAG and LEAD let you take a peek at another row and grab any column you need in your results. They are easy to use and perform great…except when they don’t. … Continue reading →

Posted in T-SQL, T-SQL Window Functions | Leave a comment

Files for my PASS Summit Windowing Function Session

Posted on 2014/11/10 by Kathi Kellenberger

Thanks to those of you who attended my session. As promised, I am sharing the slides and code.

Posted in T-SQL Window Functions | 1 Comment

PASS Summit Memories

Posted on 2014/11/08 by Kathi Kellenberger

I am leaving Seattle in just a few hours after spending a week here at the MVP Summit and PASS Summit.  I managed to make it to the keynote on Wednesday where some of the features for the next version … Continue reading →

Posted in Life in IT | 1 Comment