The SQL that actually gets used day to day: joins that behave, aggregation you can trust, window functions, and queries that stay readable.

Data modelling, DAX fundamentals and dashboard design principles that turn a report nobody opens into a tool teams rely on.

Turn addresses and coordinates into insight: projections, spatial joins, hot-spot analysis and interactive web maps with Python.

Go from a raw CSV to a defensible answer. Load, clean, explore and visualize real data with pandas — no prior Python required.