title: KDB+ using or with where and like
body: <p>I am trying to get information from column_1 and column_2 for apptype CASPER and FOO. 
  The script works fine when I search for just one or the other apptype. 
  However, when use the 'or' statement to include both apptypes in one output, I get an error. 
  I think it is just the 'kdb or' statement. </p>
  
  <p>I don't have a KDB reference manual. </p>
  
  <pre><code>raze{[tradedate] 
  
  setdate tradedate;
  
  `rootordid`clordid xasc
  
  select from( 
          (select column_1, apptype, column_3, from orders where apptype like "CASPER" or "FOO")
           )}each .utl.get_bdts[2017.12.04;2017.12.05]
  </code></pre>