title: MERGE INTO not working with Postgres 9.6
body: <p>In my Postgres 9.6 environment, when I try to execute "MERGE INTO" query, it throws me following error:</p>
  
  <pre><code>ERROR:  syntax error at or near "MERGE"
  LINE 1: MERGE INTO Stock USING Buy ON Stock.item_id = Buy.item_id  W...
          ^
  </code></pre>
  
  <p>It seems like it does not support MERGE query. However when I do google, it seems that MERGE is supported by Postgres since version 9.1.</p>
  
  <p>Please tell me whats going wrong here.</p>
  
  <p>Edit: Following are the sources from where I found MERGE support in Postgres.</p>
  
  <p><a href="https://wiki.postgresql.org/wiki/MergeTestExamples" rel="nofollow noreferrer">https://wiki.postgresql.org/wiki/MergeTestExamples</a></p>