By Dave Bauer, -Joel -Aufrecht and Malte Sussdorff -with help from Tsearch V2 Introduction by Andrew J. -Kopciuch -
</authorblurb>In earlier versions of PostgreSQL (7.4), tsearch2 was a contrib module. With PostgreSQL 9.*, it was included in the standard PostgreSQL package with minor naming changes (e.g. the function "rank" became "ts_rank"). PostgreSQL 9 included