title: Querying Database to retrieve all the records containing a given string in an array of strings present in the record
body: <p>I'm having an Active Record in my rails application in which each row of the table MyTable contains:</p>
  
  <ol>
  <li>stringArr            --> an array of string</li>
  <li>id</li>
  </ol>
  
  <p>Now I want to query my database to pull all the records in which a particular <code>queryString</code> is present in <code>strinArr</code> of that record.</p>
  
  <p>I know we can do <code>MyTable.where(xyz:someXYZ)</code> to pull all the records with <code>xyz</code> value as <code>someXYZ</code>?</p>
  
  <p>But how can I do this query?</p>