title: array must be declare error in pl sql
body: <p>I want to return a array in a function as my function looks like below,</p>
  
  <pre><code>CREATE OR REPLACE FUNCTION TEST  
  RETURN t_array 
  
  IS 
  strings t_array;
  
  BEGIN
  --do something
  RETURN strings; 
  END:
  </code></pre>
  
  <p>But it gives a error t_array must be declare. I want to know where to declare it and how can i declare it?</p>