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Pig, mail # user - Documentation bug in REGEX_EXTRACT


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Documentation bug in REGEX_EXTRACT
Steve Bernstein 2013-10-08, 17:03
Apologies if this is captured elsewhere.  In the Pig 0.11.1 documentation for the builtin function REGEX_EXTRACT (http://pig.apache.org/docs/r0.11.1/func.html#regex-extract), the third parameter is the index of the matched group to return.  The documentation says this is a "1-based parameter".  That's incorrect-it's zero-based.  E.g., to get the first match instance I used:
REGEX_EXTRACT(string,'regex',0)