Sum unique values

[echild]

Hello comunnity, im trying to sum only the unique values  one column (Proyeccion) from a table like this:

and trying to get the following result:

Pls help me masters.
Regards.

[ryan_mayu · Accepted solution]

@echild 

you can try remove duplicates in PQ.

or use DISTINCT to get a new table only contains unique value