SELECT util.search_path_append('util'); SELECT mk_derived_col((:table_str, 'county'), $$_alt("Gazetteer", "Newgazett")$$) ; -- runtime: 0.5 s ("Time: 610.516 ms") @starscream SELECT mk_derived_col((:table_str, 'recordedBy'), $$_join("Collector", "Addcoll")$$) ; -- runtime: 2 s ("Time: 2273.582 ms") @starscream