How One SQL Keyword Replaces Hours of Spreadsheet Formulas
Running totals, moving averages, and month-over-month change in a single query
The Bridge Between SQL and Excel That Every Analyst Needs
How to export query results that your team can actually use
How to Diagnose a Business Problem Fast (The Gordon Ramsay Blueprint)
Four steps that turn urgent executive questions into clear answers
The SQL Queries That Work in Every Industry (With Examples)
Healthcare, SaaS, retail, finance — same patterns, different tables
How to Build Customer Segments From Scratch With CASE WHEN + GROUP BY
Turn 1,000 customers into 5 actionable business segments
How to Find the Bad Data Before It Finds You (Simple SQL Audits)
A simple audit script that catches 80% of data quality problems
47% of Your Bookings Are Cancelling. The Empty Stadium Blueprint Finds Out Why.
How to diagnose churn by asking “who’s NOT here?”
The 3-Project Portfolio That Actually Gets Analyst Interviews
What hiring managers look for (it’s not Kaggle datasets)
How to Compare Records Within the Same Table (Self-JOINs)
The pattern that finds repeat customers, guide pairs, and loyalty trends
How to Find Customers Who Have Never Booked (Using LEFT JOIN)
The pattern that reveals who’s missing — and why it matters