ALTER TEXT SEARCH CONFIGURATION
Synopsis
ALTER TEXT SEARCH CONFIGURATIONname ADD MAPPING FORtoken_type [, ... ] WITHdictionary_name [, ... ]ALTER TEXT SEARCH CONFIGURATIONname ALTER MAPPING FORtoken_type [, ... ] WITHdictionary_name [, ... ]ALTER TEXT SEARCH CONFIGURATIONname ALTER MAPPING REPLACEold_dictionary WITHnew_dictionaryALTER TEXT SEARCH CONFIGURATIONname ALTER MAPPING FORtoken_type [, ... ] REPLACEold_dictionary WITHnew_dictionaryALTER TEXT SEARCH CONFIGURATIONname DROP MAPPING [ IF EXISTS ] FORtoken_type [, ... ]ALTER TEXT SEARCH CONFIGURATIONname RENAME TOnew_nameALTER TEXT SEARCH CONFIGURATIONname OWNER TOnew_ownerALTER TEXT SEARCH CONFIGURATIONname SET SCHEMAnew_schema
Description
ALTER TEXT SEARCH CONFIGURATION changes the definition of a text search configuration. You can modify its mappings from token types to dictionaries, or change the configuration's name or owner.
You must be the owner of the configuration to useALTER TEXT SEARCH CONFIGURATION.
Parameters
- name
The name (optionally schema-qualified) of an existing text search configuration.
- token_type
The name of a token type that is emitted by the configuration's parser.
- dictionary_name
The name of a text search dictionary to be consulted for the specified token type(s). If multiple dictionaries are listed, they are consulted in the specified order.
- old_dictionary
The name of a text search dictionary to be replaced in the mapping.
- new_dictionary
The name of a text search dictionary to be substituted forold_dictionary.
- new_name
The new name of the text search configuration.
- new_owner
The new owner of the text search configuration.
- new_schema
The new schema for the text search configuration.
TheADD MAPPING FOR form installs a list of dictionaries to be consulted for the specified token type(s); it is an error if there is already a mapping for any of the token types. TheALTER MAPPING FOR form does the same, but first removing any existing mapping for those token types. TheALTER MAPPING REPLACE forms substitutenew_dictionary forold_dictionary anywhere the latter appears. This is done for only the specified token types whenFOR appears, or for all mappings of the configuration when it doesn't. TheDROP MAPPING form removes all dictionaries for the specified token type(s), causing tokens of those types to be ignored by the text search configuration. It is an error if there is no mapping for the token types, unlessIF EXISTS appears.