Allows to keep raw query without parsing

[mk3008]

There are cases where you don't want to parse for some reason, including bugs, but you want to use the building function.

As a way to deal with it, I think it would be convenient if the raw query could be handled as a VirtualTable.

I can't get the column name because it doesn't parse, but I think it's a good specification. However, if you receive column name information as an argument, please use it as is.