Well, usually for regexp, 0 match is the whole match and groups start from 1. Are you sure you are getting group (the thing in brackets) with 0? 8 жовт. 2013 13:04, користувач "Steve Bernstein" <[email protected]> написав:
> 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) > > >
