PostgreSQL 9.6.1 Documentation
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# ALTER TEXT SEARCH DICTIONARY

## 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 new_name
    ALTER TEXT SEARCH DICTIONARY name OWNER TO { new_owner | CURRENT_USER | SESSION_USER }
    ALTER TEXT SEARCH DICTIONARY name SET SCHEMA new_schema

## 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.

`new_name`

  The new name of the text search dictionary.

`new_owner`

  The new owner of the text search dictionary.

`new_schema`

  The new schema for 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, DROP TEXT SEARCH DICTIONARY

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