title: How does mysql order rows with the same value?
body: <p>In my database I have some records where I am sorting by a column that contains identical values:</p>
  <pre><code>| col1 | timestamp              |
  | row1 | 2011-07-01 00:00:00    |
  | row2 | 2011-07-01 00:00:00    |
  | row3 | 2011-07-01 00:00:00    |
  
  SELECT ... ORDER BY timestamp
  </code></pre>
  <p>It looks like the result is in random order.
  Is the random order consistent?  I have these data in two mysql servers can I expect the same result？</p>