... This Reference documents the user types and functions of the tsearch2 module for PostgreSQL. ... Full Text Search Operator . ... A tsvector stores the lexemes of the words that are parsed out of a document, and can also remember the position of each word. ... For more information on the current configuration, read the next section on Configurations. to_tsvector( [ configuration , ] document TEXT) RETURNS TSVECTOR . ... TSVECTOR . ... CREATE FUNCTION lexize( [ dictionary , ] word text) RETURNS TEXT[]...