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index_options
editindex_options
editThe index_options
parameter controls what information is added to the
inverted index, for search and highlighting purposes. It accepts the
following settings:
|
Only the doc number is indexed. Can answer the question Does this term exist in this field? |
|
Doc number and term frequencies are indexed. Term frequencies are used to score repeated terms higher than single terms. |
|
Doc number, term frequencies, and term positions (or order) are indexed. Positions can be used for proximity or phrase queries. |
|
Doc number, term frequencies, positions, and start and end character offsets (which map the term back to the original string) are indexed. Offsets are used by the postings highlighter. |
Analyzed string fields use positions
as the default, and
all other fields use docs
as the default.