title: Is Mysql UUID_SHORT() comparable to UUID()
body: <p>A quick question or opinion if you will. </p>
  
  <p>I need to generate some UUID's for a database table. </p>
  
  <p>Auto incrementing keys won't cut it as I need the key to be unique across databases and systems also. UUID works fine however its output is too long for some of the systems that the rows will be exported to. UUID_SHORT() does the job fine and I have read MYSQL's conditions on guaranteeing its uniqueness. </p>
  
  <p>ButI just want to double check that if I use UUID_SHORT() to generate UUID's for rows from time to time that they will indeed be unique in time and space as with UUID().</p>
  
  <p>Cheers.</p>