脚本生成SQL服务器数据库架构用于散列的最快方法

I'd like to ge the whole SQL schema for a DB, then generate a hash of it. This is so that I can check if a rollback script returns the schema to it original state. Is there a SP I can use or some other cunning method? I'd like it to be as fast as possible.I'd like to ge the whole SQL schema for a DB, t