In this SQL Project for Beginners, we’ll analyze monthly sales trends and calculate month-over-month (MoM) growth using real SQL functions like DATE_TRUNC, LAG, ROUND, and NULLIF. You’ll learn: How to group revenue by month How to compare current vs previous month revenue How to calculate month-over-month percentage change Why LAG() is used instead of self joins How to prevent divide-by-zero errors using NULLIF Perfect for anyone building a SQL portfolio project or data analytics project to showcase in interviews. 📂 Source Code: 💡 New queries are added to the repository as soon as new videos are uploaded — so keep checking for updates!