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PostgreSQL psql支持
2021-08-17 15:50:12 更新
关于文本搜索配置对象的信息可以在psql中使用一组命令获得：
\dF{d,p,t}[+] [PATTERN]
可选的+能产生更多细节。
可选参数PATTERN可以是一个文本搜索对象的名称，可以是模式限定的。如果PATTERN被忽略，则所有可见对象的信息都将被显示。PATTERN可以是一个正则表达式并且可以为模式和对象名称提供独立的模式。下面的例子展示了这些特性：
=> \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 |
可用的命令是：
\dF[+] [PATTERN]-
列出文本搜索配置（加上
+得到更多细节）。=> \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]-
列出文本搜索词典（加上
+得到更多细节）。=> \dFd List of text search dictionaries Schema | Name | Description ------------+-----------------+----------------------------------------------------------- pg_catalog | arabic_stem | snowball stemmer for arabic language 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 | greek_stem | snowball stemmer for greek language pg_catalog | hungarian_stem | snowball stemmer for hungarian language pg_catalog | indonesian_stem | snowball stemmer for indonesian language pg_catalog | irish_stem | snowball stemmer for irish language pg_catalog | italian_stem | snowball stemmer for italian language pg_catalog | lithuanian_stem | snowball stemmer for lithuanian language pg_catalog | nepali_stem | snowball stemmer for nepali 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 | tamil_stem | snowball stemmer for tamil language pg_catalog | turkish_stem | snowball stemmer for turkish language \dFp[+] [PATTERN]-
列出文本搜索解析器（加上
+得到更多细节）。=> \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]-
列出文本搜索模板（加上
+得到更多细节）。=> \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