Module fts 

Full-text search: tsvector/tsquery binary codec + evaluator.

Wire format is canonical: identical content produces byte-identical bytes, enabling hash + equality + B-tree ordering without re-parsing.

Structs

LexemePos

Token

TsVectorBuilder

TsVectorReader

Enums

TokenizerKind

TsQueryAst

Tsquery AST. Wire format (preorder):

Weight

Constants

MAX_POSITION

MAX_POSITIONS_PER_LEXEME

TSQ_FLAG_PREFIX

TSQ_TAG_AND

TSQ_TAG_LEXEME

TSQ_TAG_NOT

TSQ_TAG_OR

TSQ_TAG_PHRASE

TSV_FLAG_POSITION_OVERFLOW

Functions

fn_length_tsvector

fn_numnode

fn_phraseto_tsquery

fn_phraseto_tsquery_with

fn_plainto_tsquery

fn_plainto_tsquery_with

fn_setweight

fn_setweight_selective

Apply weight only to lexemes appearing in filter; leave others unchanged.

fn_strip

Strip positions and weights from a TSVECTOR, keeping only the distinct lexeme set.

fn_to_tsquery

fn_to_tsquery_with

fn_to_tsvector

fn_to_tsvector_with

fn_ts_headline

fn_ts_headline_with

fn_ts_lexize

fn_ts_lexize_with

fn_ts_rank

fn_ts_rank_cd

fn_websearch_to_tsquery

fn_websearch_to_tsquery_with

op_concat

tsvector || tsvector: union the lexeme sets, merging positions per lexeme.

op_match

pack_position

parse_tsquery

parse_weight_char

tokenize

tsquery_display

tsvector_display

tsvector_overflowed

unpack_position