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 How do you handle a 𝗺𝗮𝗻𝘆-𝘁𝗼-𝗺𝗮𝗻𝘆 𝗿𝗲𝗹𝗮𝘁𝗶𝗼𝗻𝘀𝗵𝗶𝗽 in Power BI?" Every analyst knows the answer: "Use a 𝗯𝗿𝗶𝗱𝗴𝗲 𝘁𝗮𝗯𝗹𝗲." I gave that answer too. Then I 𝗯𝘂𝗶𝗹𝘁 it — and 𝗴𝗼𝘁 𝗰𝗼𝗺𝗽𝗹𝗲𝘁𝗲𝗹𝘆 𝘄𝗿𝗼𝗻𝗴 𝗻𝘂𝗺𝗯𝗲𝗿𝘀. The bridge table is just the beginning. Here's what's missing 👇 🏗️ 𝗪𝗵𝗮𝘁 𝗮 𝗯𝗿𝗶𝗱𝗴𝗲 𝘁𝗮𝗯𝗹𝗲 𝗮𝗰𝘁𝘂𝗮𝗹𝗹𝘆 𝗱𝗼𝗲s It 𝗳𝗶𝘅𝗲𝘀 𝘁𝗵𝗲 𝗿𝗲𝗹𝗮𝘁𝗶𝗼𝗻𝘀𝗵𝗶𝗽 𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲, gives Power BI a valid join path. That's it. It does 𝗻𝗼𝘁𝗵𝗶𝗻𝗴 𝗮𝗯𝗼𝘂𝘁 𝗵𝗼𝘄 𝗳𝗶𝗹𝘁𝗲𝗿𝘀 𝗺𝗼𝘃e during aggregation. 💥 𝗧𝗵𝗲 𝘀𝗶𝗹𝗲𝗻𝘁 𝗽𝗿𝗼𝗯𝗹𝗲𝗺 A 𝗽𝗹𝗮𝗶𝗻 𝗦𝗨𝗠() measure in a many-to-many setup leads to 𝗱𝗼𝘂𝗯𝗹𝗲 𝗰𝗼𝘂𝗻𝘁𝗶𝗻𝗴 - the same transaction gets counted across overlapping categories.  No errors, no warnings.  Just 𝘄𝗿𝗼𝗻𝗴 𝗻𝘂𝗺𝗯𝗲𝗿𝘀 that look completely fine. ✅ 𝗧𝗵𝗲 𝗳𝘂𝗹𝗹 𝗳𝗶𝘅 𝗦𝘁𝗲𝗽 𝟭 — 𝗕𝗿𝗶𝗱𝗴𝗲 𝘁𝗮𝗯𝗹𝗲: resolves model structure. Necessary, but not suf...

 Is Previous Week = IF(     WEEKNUM('Date'[Date], 2) = WEEKNUM(TODAY(), 2) - 1         && YEAR('Date'[Date]) = YEAR(TODAY()),     1,     0 ) What each part means 🔹 WEEKNUM('Date'[Date], 2) Returns the week number of each date in your Date table 2 → week starts on Monday Week 1 = first week of the year 🔹 WEEKNUM(TODAY(), 2) - 1 Gets current week number Subtracts 1 → gives previous week number 👉 Example: Today → Week 16 Previous week → Week 15 🔹 YEAR('Date'[Date]) = YEAR(TODAY()) Ensures the date belongs to the current year Prevents mixing weeks from different years 🔹 IF(condition, 1, 0) If both conditions are TRUE → return 1 Else → return 0