title: PostgreSQL - Determine column storage type
body: <p>I've been reading a lot about PostgreSQL's <a href="https://www.postgresql.org/docs/current/static/storage-toast.html" rel="noreferrer">TOAST</a>, and there's one thing I seem to be missing. They mention in the documentation that, "there are four different strategies for storing TOAST-able columns on disk," those being: PLAIN, EXTENDED, EXTERNAL, and MAIN. They also have a very clear way to define which strategy to use for your column, which can be found <a href="https://www.postgresql.org/docs/current/static/sql-altertable.html" rel="noreferrer">here</a>. Essentially, it would be something like this:</p>
  
  <pre><code>ALTER TABLE table_name ALTER COLUMN column_name SET STORAGE EXTERNAL
  </code></pre>
  
  <p>The one thing I don't see is how to easily retrieve that setting. My question is, is there a simple way (either through commands or pgAdmin) to retrieve the storage strategy being used by a column? </p>