title: cast uuid to varchar in postgres when I use sequelize
body: <p>I have a table with a column named <code>_id</code> of which the type is <code>uuid</code>. I cast the type of <code>_id</code> from <code>uuid</code> to <code>varchar</code>, in order to select the records as follows:</p>
  
  <pre><code>SELECT "_id" FROM "records" WHERE "_id"::"varchar" LIKE '%1010%';
  </code></pre>
  
  <p>and it works well.</p>
  
  <pre><code>                 _id                  
  --------------------------------------
   9a7a36d0-1010-11e5-a475-33082a4698d6
  (1 row)
  </code></pre>
  
  <p>I use sequelize as ORM for operation postgres. how to build the query condition in sequelize?</p>