title: What is the meaning of KDB table of type 0h?
body: <p>This is what I am observing:</p>
  
  <pre><code>q)type select date,time from table
  98h
  q)type select date,time,size from table
  0h
  q)select date,time,size from table
  date       time                          size  
  ------------------------------------------------
  2007.01.03 2007.01.03D09:31:00.000000000 200    
  2007.01.03 2007.01.03D09:31:00.000000000 313869 
  2007.01.03 2007.01.03D09:31:00.000000000 114852 
  2007.01.03 2007.01.03D09:31:00.000000000 566600 
  ..
  </code></pre>
  
  <p>Why does the resulting table have type 0h? What is the meaning of it? Why adding size to the query changes the result type? Thank you.</p>