title: string bitwise operation in sql server?
body: <p>As I knew the sql server bigint has 64bit length, how do I make a bitwise caculte the bigger than 64bit, and I want to know is there a good way to fix this problem .
  I want to design a securirty system that use the binanry to store the a user right in database ,and use bitwise operation to caculate user rights. Does this a good way for that ,thanks for your guys help . :)</p>