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 44-39. 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 |
