I have the following table in Power BI and i am looking for a simple or easy way to sum across columns per row. For example, i have 3 columns to sum into a fourth column per row. But it becomes very complicated if i have 100's of columns to add. So, i am looking for an efficient and easy formula., Use RLS to restrict access to rows of data being returned, and OLS to restrict the access to columns and tables. When you hide a table, column, measure, visual, or report page, on the other hand, that doesn't prevent a report user from accessing these hidden elements. You need to allow users to view the report in Power BI. Share reports or , With relationships with a many-to-many cardinality in Power BI Desktop, you can join tables that use a cardinality of many-to-many.You can more easily and intuitively create data models that contain two or more data sources. Relationships with a many-to-many cardinality are part of the larger composite models capabilities in Power BI Desktop. For more information about composite models, see , Sign in to Microsoft Power BI for intuitive data visualization, detailed analytics, and interactive dashboards. Unlock your data's full potential., Use your new column in a report. Now you can use your new ProductFullCategory column to look at SalesAmount by ProductFullCategory.. Select or drag the ProductFullCategory column from the ProductSubcategory table onto the Report canvas to create a table showing all of the ProductFullCategory names.. Select or drag the SalesAmount field from the Sales table into the table to show the , I am trying to calculate market share, but struggling with doing it correctly. I have a matrix where I have Category, Name as rows, Channel as column, and Market Share as value. Also In my dataset I have columns ABS_COMPANY (with sales inputted there if company = "A", so there are some blank ones), and ABS_TOTAL (with sales inputted in each row).