title: Data type 'Attachment' in SQL table
body: <p>I need to add a column in a SQL table as 'attachment' data type.</p>
  <p>Is there a way to do this? Which data type I have to use?</p>
  <p>The goal is to upload file (several extentions) thourght a user interface made in Nodered.</p>
  <p>Do you have suggestion?</p>
  <p>Thanks a lot</p>