groonga/groonga — pull request #60 by kou (2013-05-15 02:33:51+00:00)
Title: Support index section in match_columns

It supports:

select Documents \
--match_columns "Lexicon.index.section1 * 10 || Lexicon.index.section2" \
--query "QUERY" \
--output_columns "content, _score"
# -> _score = (# of matches against section1) * 10 + (# of matches against section2)