title: How do I specify a multi-column index with Fluent NHibernate
body: <p>The goal here is have my complete database configuration and schema generation handled by fluent nhibernate. </p>
  
  <p>Is there a way to to specify a multi-column index with Fluent nhibernate?</p>
  
  <p>I understand that you can specify an index on a single property/column</p>
  
  <p>like so :</p>
  
  <pre><code>mapping.Map(x =&gt; x.ItemDt).Index("IX_DataTransferLog_ItemDt");
  </code></pre>
  
  <p>how can I specify multiple columns?</p>
  
  <p>If that isn't possible, is there a way to add raw SQL statements to a configuration that will be run after the schema is created/updated ?</p>