title: Adding timestamp to redshift copy from hdfs
body: <p>I am new to Redshift , I am using a connector written in spark which does the job of exporting data from hive table by select * from query to redshift table .
  Now , as by the data in redshift is always appended , I was wondering if it is possible to add time stamp to the data appended to redshift without modifying the original hive table data , so that a simple sort on time stamp would generate the latest output.</p>