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Дата изменения: Unknown Дата индексирования: Sun Apr 13 07:44:33 2008 Кодировка: Поисковые слова: вторая космическая скорость |
Full-Text Search in PostgreSQL: A Gentle Introduction | ||||
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Prev | Fast Backward | Chapter 2. FTS Operators and Functions | Fast Forward | Next |
Information about FTS objects can be obtained in psql using a set of commands
\dF{,d,p}[+] [PATTERN]
Optional + used to produce more details.
Optional parameter PATTERN is a name (can be schema-qualified) of the FTS object. If PATTERN is not specified, then information about default object (configuration, parser, dictionaries) will be displayed. Visibility of FTS objects conforms PostgreSQL rule. PATTERN can be a regular expression and should apply separately to schema name and object name. Following examples illustrate this.
=# \dF *fts* List of fulltext configurations Schema | Name | Locale | Description --------+---------+-------------+------------- public | fts_cfg | ru_RU.UTF-8 |
=# \dF *.fts* List of fulltext configurations Schema | Name | Locale | Description --------+---------+-------------+------------- fts | fts_cfg | ru_RU.UTF-8 | public | fts_cfg | ru_RU.UTF-8 |
List full-text configurations (add "+" for more detail)
By default (without PATTERN), information about all visible full-text configurations will be displayed.
=# \dF russian_utf8 List of fulltext configurations Schema | Name | Locale | Default | Description ------------+--------------+-------------+---------+----------------------------------------- pg_catalog | russian_utf8 | ru_RU.UTF-8 | Y | default configuration for Russian/UTF-8 =# \dF+ russian_utf8 Configuration "pg_catalog.russian_utf8" Parser name: "pg_catalog.default" Locale: 'ru_RU.UTF-8' (default) Token | Dictionaries --------------+------------------------- email | pg_catalog.simple file | pg_catalog.simple float | pg_catalog.simple host | pg_catalog.simple hword | pg_catalog.ru_stem_utf8 int | pg_catalog.simple lhword | public.tz_simple lpart_hword | public.tz_simple lword | public.tz_simple nlhword | pg_catalog.ru_stem_utf8 nlpart_hword | pg_catalog.ru_stem_utf8 nlword | pg_catalog.ru_stem_utf8 part_hword | pg_catalog.simple sfloat | pg_catalog.simple uint | pg_catalog.simple uri | pg_catalog.simple url | pg_catalog.simple version | pg_catalog.simple word | pg_catalog.ru_stem_utf8
List full-text dictionaries (add "+" for more detail).
By default (without PATTERN), information about all visible dictionaries will be displayed.
postgres=# \dFd List of fulltext dictionaries Schema | Name | Description ------------+-----------------------+----------------------------------------------------------- pg_catalog | danish_iso_8859_1 | Snowball stemmer pg_catalog | danish_utf_8 | Snowball stemmer pg_catalog | dutch_iso_8859_1 | Snowball stemmer pg_catalog | dutch_utf_8 | Snowball stemmer pg_catalog | en_stem | English stemmer. Snowball. pg_catalog | finnish_iso_8859_1 | Snowball stemmer pg_catalog | finnish_utf_8 | Snowball stemmer pg_catalog | french_iso_8859_1 | Snowball stemmer pg_catalog | french_utf_8 | Snowball stemmer pg_catalog | german_iso_8859_1 | Snowball stemmer pg_catalog | german_utf_8 | Snowball stemmer pg_catalog | hungarian_iso_8859_1 | Snowball stemmer pg_catalog | hungarian_utf_8 | Snowball stemmer pg_catalog | ispell_template | Ispell dictionary template pg_catalog | italian_iso_8859_1 | Snowball stemmer pg_catalog | italian_utf_8 | Snowball stemmer pg_catalog | norwegian_iso_8859_1 | Snowball stemmer pg_catalog | norwegian_utf_8 | Snowball stemmer pg_catalog | portuguese_iso_8859_1 | Snowball stemmer pg_catalog | portuguese_utf_8 | Snowball stemmer pg_catalog | ru_stem_koi8 | KOI-8 russian stemmer. Snowball. pg_catalog | ru_stem_utf8 | UTF-8 russian stemmer. Snowball. pg_catalog | ru_stem_win1251 | WIN1251 russian stemmer. Snowball. pg_catalog | simple | simple dictionary: just lower case and check for stopword pg_catalog | spanish_iso_8859_1 | Snowball stemmer pg_catalog | spanish_utf_8 | Snowball stemmer ....................................................... pg_catalog | synonym | synonym dictionary: replace word by its synonym pg_catalog | thesaurus_template | Thesaurus template. Phrase by phrase substitution
List full-text parsers (add "+" for more detail)
By default (without PATTERN), information about all visible full-text parsers will be displayed.
postgres=# \dFp List of fulltext parsers Schema | Name | Description ------------+---------+--------------------- pg_catalog | default | default word parser (1 row) postgres=# \dFp+ Fulltext parser "pg_catalog.default" Method | Function | Description -------------------+---------------------------+------------- Start parse | pg_catalog.prsd_start | Get next token | pg_catalog.prsd_nexttoken | End parse | pg_catalog.prsd_end | Get headline | pg_catalog.prsd_headline | Get lexeme's type | pg_catalog.prsd_lextype | Token's types for parser "pg_catalog.default" Token name | Description --------------+----------------------------------- blank | Space symbols email | Email entity | HTML Entity file | File or path name float | Decimal notation host | Host hword | Hyphenated word int | Signed integer lhword | Latin hyphenated word lpart_hword | Latin part of hyphenated word lword | Latin word nlhword | Non-latin hyphenated word nlpart_hword | Non-latin part of hyphenated word nlword | Non-latin word part_hword | Part of hyphenated word protocol | Protocol head sfloat | Scientific notation tag | HTML Tag uint | Unsigned integer uri | URI url | URL version | VERSION word | Word (23 rows)