| PostgreSQL 8.4.1 Documentation | ||||
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The PostgreSQL source distribution includes GIN operator classes for tsvector and for one-dimensional arrays of all internal types. Prefix searching in tsvector is implemented using the GIN partial match feature. The following contrib modules also contain GIN operator classes:
B-Tree equivalent functionality for several data types
Module for storing (key, value) pairs
Enhanced support for int4[]
Text similarity using trigram matching