예제)
selection.select(function(it){ return it.get("type") == "column"; }).each(function(it){ it.set("physical-name","ADD_"+it.get("physical-name")); });
example)
selection.select(function(it){ return it.get("type") == "column"; }).each(function(it){ it.set("physical-name","ADD_"+it.get("physical-name")); });