title: Subtracting days from current_timestamp() in Hive
body: <p>I want to get the timestamp that is exactly 10 days before the current timestamp in Hive. I can get the current timestamp using the function current_timestamp() in hive (I don't want to use unix_timestamp() here because its deprecated in recent versions of hive).
  So, How do I get the timestamp which is exactly 10 days before the current timestamp? Any function like add_days available?</p>