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Welcome to Big Data and AI! This blog provides practical guides on SQL, data analysis, ETL, and personal finance to help you make data-driven decisions in your work and investments.

📊 Learn SQL from scratch to professional level
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Marco Morettini: Welcome to my blog. I write about Business Intelligence, data analysis, and practical ways to use tools like Power BI, Excel, SQL, and Python. My goal is to turn complex data into clear insights and share templates, walkthroughs, and experiments that other professionals can reuse in their own projects.

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