https://community.fabric.microsoft.com/t5/Power-BI-Updates-Blog/Guy-in-a-Cube-How-to-expand-a-list-of-records-in-a-query/ba-p/5175340
Guy in a Cube - How to expand a list of records in... - Microsoft Fabric Community
Mar 7, 2016 - This post will look at two different approaches for expanding a record from a list using Power BI and a bit of M syntax. In our specific case, a
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