title: SQL When to use Which Data Type
body: <p>Hi I was wondering when I should use the different data types.  As in in my table, how can I decide which to use: nvarchar, nchar, varchar, varbinary, etc.  </p>
  
  <p>Examples:  </p>
  
  <p>What would I use for a ... column:</p>
  
  <pre><code>Phone number,
  Address,
  First Name, Last Name,
  Email,
  ID number,
  etc. 
  </code></pre>
  
  <p>Thanks for any help!</p>