title: pl/sql - Is there a NVL() for empty rows
body: <p>With this,</p>
  
  <pre><code>set serveroutput on size 900000;
  DECLARE
    test VARCHAR(255):=0;
  BEGIN
      SELECT id INTO test FROM sku WHERE id = 1515;
      dbms_output.put_line('Result:' || test);
  END;
  </code></pre>
  
  <p>I'm having the error</p>
  
  <pre><code>"no data found"
  </code></pre>
  
  <p>When ID doesn't exist in database.</p>
  
  <p>How can I use something like <code>nvl()</code> here, so I can get a default value instead of get an error?</p>