I kept running into SQL queries where the final result looked surprising, but it was hard to understand exactly which part of the query changed the data in that way.
When a query gets larger, reasoning about it from the final output alone becomes annoying. I wanted an easier way to see how the data changed as the query moved forward.
So I built SQL Visual Debugger, a VS Code extension that lets me step through supported MySQL SELECT queries clause by clause and inspect the intermediate result after each stage.
Instead of only seeing the final output, I can see how the rows change throughout the query.
Right now the extension is focused on MySQL and supported SELECT-style query flows.
You can try it here:
https://marketplace.visualstudio.com/items?itemName=arieldev.sql-visual-debugger
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