groonga/en

@Oniry
The document about indexes with weight is not available yet, but if you have interested in this feature, the following example will help you to understand it.

table_create Bigram TABLE_PAT_KEY ShortText \
  --default_tokenizer TokenBigramSplitSymbolAlpha \
  --normalizer NormalizerAuto

table_create Diaries TABLE_HASH_KEY ShortText
column_create Diaries title COLUMN_SCALAR ShortText
column_create Diaries content COLUMN_SCALAR Text

column_create Bigram titles COLUMN_INDEX|WITH_POSITION  Diaries title
column_create Bigram contents COLUMN_INDEX|WITH_POSITION  Diaries content

load --table Diaries
[
  {
    "_key": "2013-02-06",
    "title": "groonga",
    "content": "I found it that is a fast fulltext search engine!"
  },
  {
    "_key": "2013-02-07",
    "title": "mroonga",
    "content": "I found mroonga that is a MySQL storage engine to use groonga!"
  },
]

Then execute queries like this:

select Diaries \
  --match_columns 'Bigram.titles * 10 || Bigram.contents' \
  --query 'groonga' \
--output_columns 'title,_score' --sort_keys -_score --output_pretty yes

┌───────┬──────┐
│title │_score│
├───────┼──────┤
│groonga│10 │
│mroonga│1 │
└───────┴──────┘

select Diaries \
  --match_columns 'Bigram.titles || Bigram.contents' \
  --query 'groonga' \
--output_columns 'title,_score' --sort_keys -_score --output_pretty yes

┌───────┬──────┐
│title │_score│
├───────┼──────┤
│groonga│1 │
│mroonga│1 │
└───────┴──────┘

If groonga is contained title and content column, it became to the same score without * 10 weight.