title: How to improve peformance of simple sql query?
body: <p>How to improve peformance of simple sql query
  consider below fields in table </p>
  
  <pre><code>id, name, empId, address, contact, joiningDate, designation, location
  
  select * from tblEmployee where location = "Amsterdam"
  </code></pre>
  
  <p>Currently it is taking 3seconds, how to reduced it.</p>
  
  <p>Please suggest all possible solution or way for improve query performance. </p>