ALTER TEXT SEARCH CONFIGURATION(7)                        SQL Commands                        ALTER TEXT SEARCH CONFIGURATION(7)



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 newname
       ALTER TEXT SEARCH CONFIGURATION name OWNER TO newowner


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.

       newname
              The new name of the text search configuration.

       newowner
              The new owner of 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), caus-
       ing 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)]



SQL - Language Statements                                  2011-09-22                         ALTER TEXT SEARCH CONFIGURATION(7)