Welcome to Phase 3 — Advanced Tableau. Real-world analytics rarely involve a single clean table. You'll work with data from multiple systems: sales from a SQL database, targets from Excel, web analytics from Google Sheets, customer data from a CRM. This lesson teaches you Tableau's three approaches to combining multi-source data — and critically, when to use each one.
1-A 2-A 3-A 4-A | 5 primary 6 query/viz 7 = Blend (or relationship) linked on Region/Month 8 = No premature row duplication; correct aggregation per viz 9 = Same-schema tables split by month/region - stack rows | 10 = Duplicated/multiplied measure values