Raise error for deleting-by-id on schema that has no unique key
Raise error for deleting-by-id on schema that has no unique key

pixbuffer/sunburnt-spatial,rlskoeser/sunburnt,anmar/sunburnt,tow/sunburnt,pixbuffer/sunburnt-spatial,rlskoeser/sunburnt,anmar/sunburnt,qmssof/sunburnt