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The following page has been changed by RaghothamMurthy: http://wiki.apache.org/hadoop/Hive/LanguageManual/UDF ------------------------------------------------------------------------------ ||string ||ltrim(string A) ||returns the string resulting from trimming spaces from the beginning(left hand side) of A e.g. ltrim(' foobar ') results in 'foobar '|| ||string ||rtrim(string A) ||returns the string resulting from trimming spaces from the end(right hand side) of A e.g. rtrim(' foobar ') results in ' foobar'|| ||string ||regexp_replace(string A, string B, string C) ||returns the string resulting from replacing all substrings in B that match the Java regular expression syntax(See Java regular expressions syntax) with C e.g. regexp_replace('foobar', 'oo|ar', '') returns 'fb'|| + ||string ||regexp_extract(string subject, string pattern, int intex) ||returns the string extracted using the pattern. e.g. regexp_extract('foothebar', 'foo(.*?)(bar)', 2) returns 'bar'|| ||string ||get_json_object(string json_string, string path) ||Extract json object from a json string based on json path specified, and return json string of the extracted json object. It will return null if the input json string is invalid|| ==== get_json_object ====
