title: How to remove duplicate rows in postgresql?
body: <p>I would like to remove duplicate entries in <code>Postgresql</code>.</p>
  <p>There is no unique constraint, but I would like to consider all columns together to consider a row as a duplicate.</p>
  <p>So we have a table containing following rows :</p>
  <pre><code>id   |   name   | age           | started_date  |Score |
  -----|----------|---------------|---------------|------|
  1    | tom      | 15            | 01/06/2022    |5     |
  2    | tom      | 15            | 01/06/2022    |5     |
  3    | henry    | 10            | 01/06/2022    |4     |
  4    | john     | 11            | 01/06/2022    |6     |
  ...
  </code></pre>
  <p>I would like to consider all columns together to identify the duplicate rows.</p>
  <p>How to achieve this in <code>Postgresql</code> ?</p>