3-gram is implemented as a contrib/pg_trgm. It currently uses GiST index,
but may be enhanced with the GiN.


On Sat, 17 Feb 2007, Tatsuo Ishii wrote:


Is anybody working on implementing n-gram search functionality for
text type data? tsearch2 is great for long text but it's not
appropreate for short (10-100 bytes) text data. What I want to achieve
is a fast partial match search using indexes, i.e. foo ~ 'bar' or foo
LIKE '%bar%' type matching.
Tatsuo Ishii
SRA OSS, Inc. Japan

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