How can I filter or summarize a text field in a portal?

Document created by Phyre on Jan 11, 2016
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HI!

 

I have a self join relationship table to create a portal in my layout. but I don't know how to summarize or sub summarize a text field so it will appear only one record each category will show. Anyone can help please.

 

Table1        Table 2

Supplier = SupplierJustone.jpg

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