# 12.10\. psql支持 文本搜索配置對象的信息可以使用一組命令從psql中獲得： ``` \dF{d,p,t}[+] [PATTERN] ``` 一個可選的`+`產生更多細節。 可選的參數`PATTERN`可以是一個文本搜索對象的名稱，隨意的模式匹配。 如果`PATTERN`被忽略，則顯示所有可見對象的信息。`PATTERN`可以是一個正則表達式， 并且可以提供模式的_獨立_形式和對象名稱。下面的例子說明了這些： ``` => \dF *fulltext* List of text search configurations Schema | Name | Description --------+--------------+------------- public | fulltext_cfg | ``` ``` => \dF *.fulltext* List of text search configurations Schema | Name | Description ----------+---------------------------- fulltext | fulltext_cfg | public | fulltext_cfg | ``` 可用命令是： `\dF[+] [PATTERN]` 羅列文本搜索配置（增加`+`獲取更多細節）： ``` => \dF russian List of text search configurations Schema | Name | Description ------------+---------+------------------------------------ pg_catalog | russian | configuration for russian language => \dF+ russian Text search configuration "pg_catalog.russian" Parser: "pg_catalog.default" Token | Dictionaries -----------------+-------------- asciihword | english_stem asciiword | english_stem email | simple file | simple float | simple host | simple hword | russian_stem hword_asciipart | english_stem hword_numpart | simple hword_part | russian_stem int | simple numhword | simple numword | simple sfloat | simple uint | simple url | simple url_path | simple version | simple word | russian_stem ``` `\dFd[+] [PATTERN]` 羅列文本搜索詞典（增加`+` 獲取更多細節）。 ``` => \dFd List of text search dictionaries Schema | Name | Description ------------+-----------------+----------------------------------------------------------- pg_catalog | danish_stem | snowball stemmer for danish language pg_catalog | dutch_stem | snowball stemmer for dutch language pg_catalog | english_stem | snowball stemmer for english language pg_catalog | finnish_stem | snowball stemmer for finnish language pg_catalog | french_stem | snowball stemmer for french language pg_catalog | german_stem | snowball stemmer for german language pg_catalog | hungarian_stem | snowball stemmer for hungarian language pg_catalog | italian_stem | snowball stemmer for italian language pg_catalog | norwegian_stem | snowball stemmer for norwegian language pg_catalog | portuguese_stem | snowball stemmer for portuguese language pg_catalog | romanian_stem | snowball stemmer for romanian language pg_catalog | russian_stem | snowball stemmer for russian language pg_catalog | simple | simple dictionary: just lower case and check for stopword pg_catalog | spanish_stem | snowball stemmer for spanish language pg_catalog | swedish_stem | snowball stemmer for swedish language pg_catalog | turkish_stem | snowball stemmer for turkish language ``` `\dFp[+] [PATTERN]` 羅列文本搜索分析器（增加`+`獲取更多的細節）。 ``` => \dFp List of text search parsers Schema | Name | Description ------------+---------+--------------------- pg_catalog | default | default word parser => \dFp+ Text search parser "pg_catalog.default" Method | Function | Description -----------------+----------------+------------- Start parse | prsd_start | Get next token | prsd_nexttoken | End parse | prsd_end | Get headline | prsd_headline | Get token types | prsd_lextype | Token types for parser "pg_catalog.default" Token name | Description -----------------+------------------------------------------ asciihword | Hyphenated word, all ASCII asciiword | Word, all ASCII blank | Space symbols email | Email address entity | XML entity file | File or path name float | Decimal notation host | Host hword | Hyphenated word, all letters hword_asciipart | Hyphenated word part, all ASCII hword_numpart | Hyphenated word part, letters and digits hword_part | Hyphenated word part, all letters int | Signed integer numhword | Hyphenated word, letters and digits numword | Word, letters and digits protocol | Protocol head sfloat | Scientific notation tag | XML tag uint | Unsigned integer url | URL url_path | URL path version | Version number word | Word, all letters (23 rows) ``` `\dFt[+] [PATTERN]` 羅列文本搜索模板（增加`+`獲取更多的細節）。 ``` => \dFt List of text search templates Schema | Name | Description ------------+-----------+----------------------------------------------------------- pg_catalog | ispell | ispell dictionary pg_catalog | simple | simple dictionary: just lower case and check for stopword pg_catalog | snowball | snowball stemmer pg_catalog | synonym | synonym dictionary: replace word by its synonym pg_catalog | thesaurus | thesaurus dictionary: phrase by phrase substitution ```