title: SOLR - Regex in Filter query
body: <p>I want to implement Regex in fq but never implemented it before.</p>
  
  <p>I have the below value in a property and the fieldtype is "lowercase":
  Prop=company1@city1@state1@country1@senior analytical chemist, chicago </p>
  
  <p>I want to filter the results based on the regex. The regex should match the above if 
  "company1@city1@state1@country1@"+ regex to match <strong>chicago</strong> and <strong>analytical</strong>  anywhere after last @ symbol.</p>
  
  <p>My requirement is to match the exact values before last @ and then use regex to match the remaining strings as I want to do free text search only on the last part. I cant split the data into multiple columns as its a multi-valued field.</p>
  
  <p>I tried the below regex in the code to match the string after last @. It works fine in the code but not sure how to implement same in SOLR</p>
  
  <pre><code>/([^@]+(?=.*IL)(?=.*chicago)(?=.*analytical))/ig 
  </code></pre>
  
  <p>Can someone please let me know how to use above regex with SOLR?</p>