title: First Name and Last Name Combine search in mongoDB
body: <p>I have store two field FirstName and LastName stored in MongoDB.from Frontend, I am receiving a string containing both first name and last name separated by space I need a find query which searches both first name &amp; last name combined.</p>
  
  <p>here is eg. scenario</p>
  
  <p>in DB I have following object</p>
  
  <pre><code>{ firstName: "Hemant Kumar", lastName: "Rajpoot" };
  </code></pre>
  
  <p>if i receive <code>"Hemant Kumar Rajpoot"</code> it should match.If possible please don't give solution with aggregeation.</p>