NAME

       ALTER_TEXT_SEARCH_CONFIGURATION - change the definition of a text search configuration

SYNOPSIS

       ALTER TEXT SEARCH CONFIGURATION name
           ADD MAPPING FOR token_type [, ... ] WITH dictionary_name [, ... ]
       ALTER TEXT SEARCH CONFIGURATION name
           ALTER MAPPING FOR token_type [, ... ] WITH dictionary_name [, ... ]
       ALTER TEXT SEARCH CONFIGURATION name
           ALTER MAPPING REPLACE old_dictionary WITH new_dictionary
       ALTER TEXT SEARCH CONFIGURATION name
           ALTER MAPPING FOR token_type [, ... ] REPLACE old_dictionary WITH new_dictionary
       ALTER TEXT SEARCH CONFIGURATION name
           DROP MAPPING [ IF EXISTS ] FOR token_type [, ... ]
       ALTER TEXT SEARCH CONFIGURATION name RENAME TO new_name
       ALTER TEXT SEARCH CONFIGURATION name OWNER TO new_owner
       ALTER TEXT SEARCH CONFIGURATION name SET SCHEMA new_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 use ALTER 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 for old_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.

       The ADD 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.
       The ALTER MAPPING FOR form does the same, but first removing any existing mapping for
       those token types. The ALTER MAPPING REPLACE forms substitute new_dictionary for
       old_dictionary anywhere the latter appears. This is done for only the specified token
       types when FOR appears, or for all mappings of the configuration when it doesn't. The DROP
       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, unless IF EXISTS appears.

EXAMPLES

       The following example replaces the english dictionary with the swedish dictionary anywhere
       that english is used within my_config.

           ALTER TEXT SEARCH CONFIGURATION my_config
             ALTER MAPPING REPLACE english WITH swedish;

COMPATIBILITY

       There is no ALTER TEXT SEARCH CONFIGURATION statement in the SQL standard.

SEE ALSO

       CREATE TEXT SEARCH CONFIGURATION (CREATE_TEXT_SEARCH_CONFIGURATION(7)), DROP TEXT SEARCH
       CONFIGURATION (DROP_TEXT_SEARCH_CONFIGURATION(7))