Select value of jsonb column in PostgreSQL
<p>I have a table 'Documents' which has a column 'Tags' with 'jsonb' datatype. 
Sample data in Tags column </p>

<pre><code> [{"Tag": "Social Media"}, {"Tag": "Adobe Creative"}]
 [{"Tag": "Interactive"}]
 [{"Tag": "Web 2.0"}, {"Tag": "Adobe Creative"},{"Tag": "Suite"}]
</code></pre>

<p>I need to get the distinct values of "Tag" like</p>

<pre><code> Social Media 
 Adobe Creative
 Interactive
 Web 2.0
 Suite
</code></pre>

<p>I am new in PostgreSQL.</p>