| Postgres-XC 1.2.1 Documentation | ||||
|---|---|---|---|---|
| Prev | Fast Backward | Chapter 47. System Catalogs | Fast Forward | Next |
Note: The following description applies both to Postgres-XC and PostgreSQL if not described explicitly. You can read PostgreSQL as Postgres-XC except for version number, which is specific to each product.
The pg_ts_dict catalog contains entries defining text search dictionaries. A dictionary depends on a text search template, which specifies all the implementation functions needed; the dictionary itself provides values for the user-settable parameters supported by the template. This division of labor allows dictionaries to be created by unprivileged users. The parameters are specified by a text string dictinitoption, whose format and meaning vary depending on the template.
PostgreSQL's text search features are described at length in Chapter 12.
Table 47-48. pg_ts_dict Columns
| Name | Type | References | Description |
|---|---|---|---|
| oid | oid | Row identifier (hidden attribute; must be explicitly selected) | |
| dictname | name | Text search dictionary name | |
| dictnamespace | oid | pg_namespace.oid | The OID of the namespace that contains this dictionary |
| dictowner | oid | pg_authid.oid | Owner of the dictionary |
| dicttemplate | oid | pg_ts_template.oid | The OID of the text search template for this dictionary |
| dictinitoption | text | Initialization option string for the template |