pg_ts_parser

The pg_ts_parser catalog contains entries defining text search parsers. A parser is responsible for splitting input text into lexemes and assigning a token type to each lexeme. Since a parser must be implemented by C-language-level functions, creation of new parsers is restricted to database superusers.

PostgreSQL 's text search features are described at length in Chapter 12 .

Table 45-48. pg_ts_parser Columns

Name Type References Description
prsname name Text search parser name
prsnamespace oid pg_namespace .oid The OID of the namespace that contains this parser
prsstart regproc pg_proc .oid OID of the parser's startup function
prstoken regproc pg_proc .oid OID of the parser's next-token function
prsend regproc pg_proc .oid OID of the parser's shutdown function
prsheadline regproc pg_proc .oid OID of the parser's headline function
prslextype regproc pg_proc .oid OID of the parser's lextype function