title: Return every 200:th rows, plus last row
body: <p>I want to return every 200:th row and also the last row. If less than 200 rows, just return the last one.</p>
  
  <p>If my table has e.g. 333 rows, return row 200 and row 333.</p>
  
  <p>I try to used <code>mod(SQN,200)='0'</code>, but the No.333 record will be missing.</p>
  
  <p>Thank your help.</p>