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To create a self join:
- Open a workbook Workbook and add the data source.
Select "Edit" → Join or click 
- Click the "Join" icon.
- In this example of a self join, the goal is to use the employee names as a key to find if any employee has multiple roles. To do this, add the employee column and confirm with "Create Joined Sheet".
- The result is a self join using the employee names as a key and displaying matching records.
Joined Sheet Naming
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