alter_text_search_dictionary (7) - Linux Manuals
alter_text_search_dictionary: change the definition of a text search dictionary
NAMEALTER TEXT SEARCH DICTIONARY - change the definition of a text search dictionary
ALTER TEXT SEARCH DICTIONARY name ( option [ = value ] [, ... ] ) ALTER TEXT SEARCH DICTIONARY name RENAME TO newname ALTER TEXT SEARCH DICTIONARY name OWNER TO newowner
ALTER TEXT SEARCH DICTIONARY changes the definition of a text search dictionary. You can change the dictionary's template-specific options, or change the dictionary's name or owner.
- The name (optionally schema-qualified) of an existing text search dictionary.
- The name of a template-specific option to be set for this dictionary.
- The new value to use for a template-specific option. If the equal sign and value are omitted, then any previous setting for the option is removed from the dictionary, allowing the default to be used.
- The new name of the text search dictionary.
- The new owner of the text search dictionary.
Template-specific options can appear in any order.
The following example command changes the stopword list for a Snowball-based dictionary. Other parameters remain unchanged.
ALTER TEXT SEARCH DICTIONARY my_dict ( StopWords = newrussian );
The following example command changes the language option to dutch, and removes the stopword option entirely.
ALTER TEXT SEARCH DICTIONARY my_dict ( language = dutch, StopWords );
The following example command ``updates'' the dictionary's definition without actually changing anything.
ALTER TEXT SEARCH DICTIONARY my_dict ( dummy );(The reason this works is that the option removal code doesn't complain if there is no such option.) This trick is useful when changing configuration files for the dictionary: the ALTER will force existing database sessions to re-read the configuration files, which otherwise they would never do if they had read them earlier.
SEE ALSOCREATE TEXT SEARCH DICTIONARY [create_text_search_dictionary(7)], DROP TEXT SEARCH DICTIONARY [drop_text_search_dictionary(7)]