how to replace characters in hive?

Question

I have a string column description in a hive table which may contain tab characters \'\\t\', these characters are however messing some views when c

Answer 1

regexp_replace UDF performs my task. Below is the definition and usage from apache Wiki.

regexp_replace(string INITIAL_STRING, string PATTERN, string REPLACEMENT):

This returns the string resulting from replacing all substrings in INITIAL_STRING that match the java regular expression syntax defined in PATTERN with instances of REPLACEMENT,

e.g.: regexp_replace("foobar", "oo|ar", "") returns fb