SUM based on distinct values ​​from another column

[req77]

Hello 🙂

I have a table in the following format:

Product_ID	Weight	Classification
1	50	A
1	50	B
2	10	A
2	10	C
2	10	C
3	20	B

As you can see, the same product can be repeated several times in the table, but that product will always have the same weight.
I want to create a measure that makes a sum of the unique weights of each product based on the "Product_ID" column.

Based on the table above, this measurement would bring me the result: 80

because:

Product_ID 1 = 50
Product_ID 2 = 10
Product_ID 3 = 20


Can someone help me?

[DataInsights · Accepted solution]

@req77,

Try this measure:

Sum Product Weight = 
SUMX (
    SUMMARIZE ( Table1, Table1[Product_ID], Table1[Weight] ),
    Table1[Weight]
)