SQL courses: business reports you type and run in your browser
Answer real business questions with SQL in the free DB Fiddle: a revenue-by-month report, your top customers and key accounts with GROUP BY and HAVING, and a Monday call list of customers who have gone quiet, with a LEFT JOIN.
Every module is a hands-on practice on real DB Fiddle screens where you type every line yourself, a few lines per step, then a checklist to do it again in DB Fiddle. The course comes with a one-page cheat sheet and the few terms you meet most.
Who it is for: office managers, analysts and owners who rebuild the same report from an export every month. A browser is enough: no install, no account, and the made-up office-supply shop in it uses the same queries you then run on your own data.
DB Fiddle1 course
SQL for Business Reports Jump Start
Answer three everyday business questions with SQL in the free DB Fiddle, typing every line yourself: revenue by month, your top customers and key accounts, and the customers who have gone quiet.
The 3 modules
- SQL: Build a Monthly Revenue Report from an Orders TableDB Fiddle · Beginner · ~12 min
- SQL: Top Customers and Key Accounts with GROUP BY and HAVINGDB Fiddle · Beginner · ~12 min
- SQL: Find Customers Who Have Gone Quiet with a LEFT JOINDB Fiddle · Beginner · ~15 min
Cheat sheet: SQL Business Reports Cheat Sheet · PDF
Words to know: SQL GROUP BY (SQL) LEFT JOIN (SQL) Pivot table
