Hi,
After pg_trgm extracts the trigrams as GIN index keys, generate_trgm()
removes duplicate index keys, to avoid generating redundant index entries.
Also ginExtractEntries() which is the caller of pg_trgm does the same thing.
Why do we need to remove GIN index entries twice? I think that we can
get rid of the removal-of-duplicate code block from generate_trgm()
because it's useless. Comments?
Regards,
--
Fujii Masao