I created a view with
select a, st_union(geom) from table group by a
srid: 25832, geometry type: Multipolygon
The view has no SRID and the geometry type is
Now i want to calculate the area with the geometry in the view. Because of the missing SRID the results are not correct. How can i set the SRID and geometry type for the gemoetries for the view?