QGIS raster calculator is confusing me and I have no idea how to perform a very simple task.
I have 2 rasters, A and B:
Raster A has 9999 values on all pixels. Raster B has different values including no data pixels.
I want Raster A pixel to = Raster B pixel where B != null
Which means Raster C(output) is 9999 Except where Raster B has values