What is RLIKE operator in Hive?

RLIKE is an operator similar to LIKE in SQL. We use LIKE to search for string with similar text.

E.g.
user_name LIKE ‘%Smith’

Hive provides RLIKE operator that can be used for searching advanced Regular Expressions in Java.

E.g. user_name RLIKE ‘.(Smith|Sam).

This will return user_name that has Smith or Sam in it.