Hi Fabiana Bertini,
Thank you for contacting us on Microsoft Q&A forum.
Please follow the below steps to troubleshoot the issue:
Step1: Left side pane under Explorer, we can see only “dimension_stock_items” table. Please consider only that table. Ignore Whatever right side highlighted tables.
Step 2: Try to create a view with below query (Kindly refer this link:
SELECT Brand, COUNT(StockItemKey) AS Products
FROM dimension_stock_item
GROUP BY Brand
Step 3: try to make a relationship between brand from “dimension_stock_items” table to brand from “View”. Please refer below screenshot.
Step 4: start design a report, Select the New report, It can load the table and the view to Power BI report designer.
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