What SQL Joins and Quilting Have in Common?
When I think of joins, I think of quilts. Let’s be real— JOINS are not always simple . Especially when your tables don’t have a primary key. Or when the data model is not documented anywhere and you’re just trying to make sense of it all. Picture this: You’re at your desk, staring at your screen (remember to blink). You’re writing a query to count the number of employees per department. It should be simple Two tables: employees and departments . A quick JOIN, a simple GROUP BY , and done. Right? You hit "Execute" Boom— 5,732 rows . That can’t be right. Your company only has 200 employees. You frown. You try DISTINCT . Still too many rows. You tweak the join condition, change the table order, throw in a LIMIT just to see something normal—but nothing works. It’s still chaos. Welcome to the world of SQL joins—where your logic seems sound, but your results make no sense. Why This Happens Joins are powerful—but they’re picky. If you join on the wrong column, or if your...