title: SQL split values to multiple rows
body: <p>I have table :</p>
  
  <pre><code>id | name    
  1  | a,b,c    
  2  | b
  </code></pre>
  
  <p>i want output like this :</p>
  
  <pre><code>id | name    
  1  | a    
  1  | b    
  1  | c    
  2  | b
  </code></pre>