title: Resolving variables are incompatible in the equal to operator error in SQL
body: <p>I am getting the following error in django <code>model.objects.get_or_create</code>.</p>
  <pre><code>SQLServer [FreeTDS][SQL Server]The data types nvarchar(max) and ntext
  are incompatible in the equal to operator.
  </code></pre>
  <p>The column django is complaining about <code>NVARCHAR(MAX)</code> with null allowed in SQLServer.</p>
  <p>The Django model element is defined as <code>TextField(null=True)</code></p>