title: Remove duplicate rows by checking mutliple columns in SQL
body: <p>TABLE 1:</p>
  <pre><code>ID  NAME  AGE
  1   A1   24
  2   A2   25
  3   A3   27
  4   A4   28
  5   A1   24
  6   A6   27
  7   A3   27
  8   B1   21
  9   B1   22
  
  </code></pre>
  <p>Need to remove duplicate combinations of name and age (Eg. A1-24 , A3-27..etc) in SQL..
  Distinct is not working</p>