title: How to get not existing records as null from total records?
body: <p>Table1: <strong>tbl_users</strong>:</p>
  <pre><code>+----+--------+
  | id | name   |
  +----+--------+
  | 1  | waheed |
  +----+--------+
  | 2  | fareed |
  +----+--------+
  </code></pre>
  <p>Table2: <strong>tbl_watched</strong>:</p>
  <pre><code>+------------+----+--------+
  | id_watched | id | name   |
  +------------+----+--------+
  | 1          | 2  | fareed |
  +------------+----+--------+
  </code></pre>
  <p>I want to get the total records if the tbl_watched is not present it should return as <code>zero</code> or <code>null</code></p>
  <p>Output:</p>
  <pre><code>+----+--------+--------+
  | id | name   |watched |
  +----+--------+--------+
  | 1  | waheed |  90    |
  +----+--------+--------+
  | 2  | fareed |  null  |
  +----+--------+--------+
  </code></pre>
  <p>How can I get this kind of result?</p>