title: how to convert and compare some data from different tables
body: <p>I would like to compare some data from different databases. I think to use MINUS operator for this comparison. However, I have some difficult with a conversion. For instance how to convert number - 91108234116 from RAW() toward VARCHAR2(). Could you please tell me how to convert the data below. I use PL/SQL developer.</p>
  
  <p><img src="https://i.stack.imgur.com/E3vQS.jpg" alt="enter image description here"></p>
  
  <p>Thanks for your cooperation in advance.</p>