title: postgresql function to call webservice
body: <p>I want to call a webservice from Postgresql function.
  I have seen this link where it is shown how to make a http request using pgpsql code
  <a href="http://boundlessgeo.com/2012/04/http-for-postgresql/" rel="nofollow">http://boundlessgeo.com/2012/04/http-for-postgresql/</a></p>
  
  <p>Also shown On Github 
  <a href="https://github.com/pramsey/pgsql-http" rel="nofollow">https://github.com/pramsey/pgsql-http</a></p>
  
  <p>But how i can add this extension to my PostgresSQL
  or
  Is there are other approach to call a http service from postgres? </p>
  
  <p>I am using PostgreSQL 9.5 Windows version.</p>