title: PostgreSQL - next serial value in a table
body: <p>I have a simple question, suppose we have a table:</p>
  
  <pre><code> id   A   B
   1   Jon  Doe
   2   Foo  Bar
  </code></pre>
  
  <p>Is there a way to know, which is the next id's increment, in this case 3 ? 
  Database is PostgreSQL!</p>
  
  <p>Tnx alot!</p>