I have this relationship
Where one Oferta can be associated to many Proyectos but many Proyectos can exists without any Oferta associated
So I want to show in my report all the Ofertas the Proyectos associated with.
But all, not only the Ofertas taht exists in the Proyectos table. But either I select single or both in the relationship when I add the filed Proyectos.proyecto only shows the Ofertas tah exists in Proyectos
Any idea pleae?
From your description, Ofertas linked to Proyectos based on the ID and OfertaID, you want to get the Proyectos which are associated with Ofertas, right?
In your scenario, you can create a measure to filter non related records like below:
m = CALCULATE(MAX('Table1'[Proyecto]),FILTER('Table1','Table1'[OfertaID]<>BLANK()))
You can take a look at attached .pbix file. If it doesn't meet your requirement, please tell us the expected results based on our sample data.