title: Postgres Concatenation
body: <p>I'm trying to a simple concatenation in PostgreSQL and it keeps up throwing up an error message. I don't understand what I am doing wrong here.</p>
  
  <pre><code>select concat('abcde', 'fgh');
  No function matches the given name and argument types. You might need to add explicit type casts.
  
  select concat(cast('abcde' as text), cast('fgh' as text));
  No function matches the given name and argument types. You might need to add explicit type casts.
  </code></pre>
  
  <p>I am using Postgres version 8.4.11. Please let me know what is going on. </p>