Generating a BatchID for all the rows

Hi,

    How can i generate a unique BatchID , a alphanumeric value like '0E984725-C51C-4BF4-9960-E1C80E27ABA0' 

 for all the rows ?  

   I will be loading daily files into the destination. For each run, a BatchID should be assigned to all the records in that run.

So that it helps me to identify the records in the destination for each BatchID seperately.

Thanks,

NSRao