| PostgreSQL 9.3.5 문서 | ||||
|---|---|---|---|---|
| 이전 | 위로 | 장 47. System Catalogs | 다음 | |
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 12장.
표 47-49. pg_ts_parser Columns
| Name | Type | References | Description |
|---|---|---|---|
| oid | oid | Row identifier (hidden attribute; must be explicitly selected) | |
| 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 |