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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This Query Ran 5,100 Times a Day. Nobody Had Noticed.

Database Star

August 16, 2026 40

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???? Get the SQL Performance Checklist: https://deploy-preview-14--tubular-dolphin-9ead68.netlify.app/go/5?video=-hLsj3JkX0I&source=description
???? Get 56 bad query patterns & fixes: https://deploy-preview-14--tubular-dolphin-9ead68.netlify.app/go/62?video=-hLsj3JkX0I&source=description

In this video, I'll explain a problematic query I found at work, why it was a problem, and how I fixed it.

TIMESTAMPS:
00:00 - The query
01:56 - The execution plan
04:02 - Investigating the data
08:12 - A bonus improvement

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