title: Search multiple SOLR core's and return one result set
body: <p>We have several core's setup in SOLR and would like to search across these cores and return a single result set.  </p>
  
  <p>A bit more background:
  We have a SOLR core that we index our internal blog engine.  We also have a SOLR core that we index our CMS system.  We would like to search across both of these cores but view a single result set.</p>
  
  <p>I am aware of having related entities in a document, but we would like to keep the cores separate, for easy of maintenance, and redundancy.</p>
  
  <p>We are using SolrSharp as a wrapper for searching SOLR.
  Any advice or direction would be appreciated.</p>