title: counting the number of non null or non zero columns in a table
body: <p>I have a table like this</p>
  
  <pre><code>ID   Name   Score_1   Score_2   Score_3
  1    Abcd   4         5         5
  2    Bdc    8         7         0
  3    dcd    0         0         3
  4    cdded  0         0         0
  </code></pre>
  
  <p>I need another column in the end which can count the number of non zero columns.Result should be like this</p>
  
  <pre><code>ID   Name   Score_1   Score_2   Score_3 Count
  1    Abcd   4         5         5        3
  2    Bdc    8         7         0        2  
  3    dcd    0         0         3        1 
  4    cdded  0         0         0        0
  </code></pre>
  
  <p>Thank you</p>