The Part of Data Modelling Everyone Skips (That Breaks Everything Later)
Your measure is right, your data reconciles, and your year-to-date is still wrong - because the model never had a real date table, only a date column pretending to be one.
Dimensional Modeling
// 3 postsPosts about Dimensional Modeling.
Dimensional Modeling posts
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Star Schema Done Right, Part 2: Dimension Tables and Why Cardinality Matters
A dimension table isn't just a lookup. Why fact-to-dimension relationships have to be many-to-one, why bidirectional filtering always causes problems, and how to build dimensions your DAX can trust.
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Star Schema Done Right, Part 1: What a Fact Table Actually Is (And Isn't)
Most introductions to star schema start with the diagram. The star, the centre, the spokes. This one starts with the question: what problem does a fact table solve that a flat table doesn't? Part 1 builds the intuition before the vocabulary, so the rest of the series makes immediate sense.