Hi, all It appeared than GIN index sometimes lose results if simultaneously:
1 if query operand contains weight marks 2 if weight-marked operand is negated by ! operator 3 if there are only logical (not phrase) operators from this negation towards the root of query tree. e.g. '!crew:A'::tsquery refuse to find 'crew:BCD'::tsvector Seems it is in all versions of PG. The patch is intended to deal with the issue. Also it contains tests for these rare condition. Pavel Borisov.
gin-weights-patch-v3.diff
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