title: SQL: Storing guids
body: <p>I now have a requirement that a column has to be added to a table that holds a unique ID (guid). This ID is used to match records in different tables and databases but there will be NO FK constraints. Would it be better to store the guid as a varchar(32) or as a uniqueidentifier type? </p>
  
  <p>There will be joins done using this column but not on a regular basis. This ID is NOT a PK. I'm asking in terms of storage and performance.</p>