title: Spring Data Jpa specification implementation of given problem
body: <p>I am having a table like </p>
  
  <pre><code>ColA        ColB
  Name1       1
  Name1       2
  Name2       1
  Name2       3
  Name2       5
  </code></pre>
  
  <p>I want to fetch my result set as</p>
  
  <pre><code>ColA        ColB
  Name1       1
  Name2       1
  </code></pre>
  
  <p>How can we implement it in spring data JPA specification ?</p>