title: postgresql: for a given table name what is schema name?
body: <p>I have a table name student and like 35 schemas in my DB.
  how can i get in which schema the table student exists?
  (there might be more than one in different schemas).</p>
  
  <p>I've tried through <code>pg_class</code> but I don't know how to get schema name from there.</p>