-- Fix in domain property inference: A union with an empty table now ignores    the domain of the empty_tbl and keeps the domain of the other input.
-- Fix in domain property inference: A union with an empty table now ignores
   the domain of the empty_tbl and keeps the domain of the other input.

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb