Serge Aurubin

SERGE AURUBIN

DATA SCIENTIST

Welcome to my blog for everything having to do with data science and analysis. I am always looking for new opportunities to drive business insight using data analysis.

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30 Seconds to 4 Seconds - A Real SQL Server Case Study

Database Star

May 31, 2026   1

???? Get the AI prompt from this video: https://databasestar.mykajabi.com/lpkj-ai-sqlserver/?video=QybD_ybyyyI
???? Get 56 bad query patterns & fixes: https://databasestar.mykajabi.com/offers/VxZmEozw/checkout?video=QybD_ybyyyI

In this video, we look at a slow query in SQL Server and make a series of changes to try to get it to run faster. Then I ask an AI tool to analyse the query to see what improvements it suggests.

TIMESTAMPS
00:00 - Our query
03:35 - Improve the filter
04:19 - A structural change
06:44 - Move calculations
10:13 - Add indexes
12:29 - AI analysis

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