Double checking before I try to edit. The page here: https://cwiki.apache.org/Hive/languagemanual-udf.html
says: A RLIKE B if A or B is NULL, TRUE if any (possibly empty) substring of A matches the Java regular expression B, otherwise FALSE. E.g. 'foobar' RLIKE 'foo' evaluates to FALSE whereas 'foobar' RLIKE '^f.*r$' evaluates to TRUE. 1) "if A or B is NULL" seems like an unfinished part. 2) "any (possibly empty) substring of A [that] matches the Java regular expression B" should be "foo" at 0 for 'foobar' RLIKE 'foo', and result in TRUE, right?
