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"));
});