title: OrientDB import edges only using ETL tool
body: <p>I already used the OETL to insert all my Vertex to the graph.</p>
  
  <p>Now I have a file that outlines the edges at the following way:</p>
  
  <blockquote>
    <p>node_1,rel_type,node_2<br>
    11000001,relation_A,10208879<br>
    11000001,relation_A,10198662<br>
    11000001,relation_B,10159927<br>
    11000001,relation_C,10165779  </p>
  </blockquote>
  
  <p>How can I import it using the OrientDB OETL tool?</p>
  
  <p>I tried the following:</p>
  
  <pre><code>"transformers": [
      { "csv": {} },
      { "command" : {
              "command" : "create edge ${rel_type} from (select flatten(@rid) from V where node_id= ${node_1}) to (select flatten(@rid) from V where node_id = ${node_2})",
              "output" : "edge"
          }
      }
    ],
  </code></pre>
  
  <p>But this failed to work since it can't parse the values from the csv.</p>