title: How link multiple dimensions
body: <p>I am trying to pull data for below fields with ETL and build a custom report. I can pull at max only 7 fields using ETL (Pentaho PDI) at a time. Is there a way to link these dimensions (User, Traffic Sources, Geo Netwrok) using a unique key like Surrogate Key after extracting data? Thanks in advance. </p>
  
  <pre><code>ga:source        &lt;-User
  ga:sourceMedium  &lt;-User
  ga:userType      &lt;-User
  ga:sessionCount  &lt;-User
  ga:campaign         &lt;-Traffic Sources
  ga:adDestinationUrl &lt;-Traffic Sources
  ga:keyword          &lt;-Traffic Sources
  ga:city            &lt;-Geo Network 
  ga:userAgeBracket  &lt;-Audience
  </code></pre>