title: SQL Server: Computed Column defintions retrievable from Database?
body: <p>I would like to query the definition of a computed column from the database, but can't find a command that seems to do what I want...</p>
  
  <p>For instance, if a column is defined as: </p>
  
  <pre><code>CallDT AS (CONVERT([datetime],dateadd(second,[StartDate],'01/01/1970'),(0)))
  </code></pre>
  
  <p>in the DDL, I would like to run a command on the database to retrieve that "AS" statement so I can compare it to its expected value. (I'm developing a SQL parser that will compare an existing database to a DDL definition)...</p>
  
  <p>Is this possible?</p>