NAME
ALTER TEXT SEARCH DICTIONARY - change the definition of a text search
dictionary
SYNOPSIS
ALTER TEXT SEARCH DICTIONARY name (
option [ = value ] [, ... ]
)
ALTER TEXT SEARCH DICTIONARY name RENAME TO newname
ALTER TEXT SEARCH DICTIONARY name OWNER TO newowner
DESCRIPTION
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.
You must be the owner of the dictionary to use ALTER TEXT SEARCH
DICTIONARY.
PARAMETERS
name The name (optionally schema-qualified) of an existing text
search dictionary.
option The name of a template-specific option to be set for this
dictionary.
value 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.
newname
The new name of the text search dictionary.
newowner
The new owner of the text search dictionary.
Template-specific options can appear in any order.
EXAMPLES
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.
COMPATIBILITY
There is no ALTER TEXT SEARCH DICTIONARY statement in the SQL standard.
SEE ALSO
CREATE TEXT SEARCH DICTIONARY [create_text_search_dictionary(7)], DROP
TEXT SEARCH DICTIONARY [drop_text_search_dictionary(7)]