12.10. psql支援

Information about text search configuration objects can be obtained inpsqlusing a set of commands:
\dF{d,p,t}[
+
] [
PATTERN
]
An optional+produces more details.
The optional parameterPATTERN_can be the name of a text search object, optionally schema-qualified. IfPATTERNis omitted then information about all visible objects will be displayed.PATTERN_can be a regular expression and can provide_separate_patterns for the schema and object names. The following examples illustrate this:
=
>
 \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 |
The available commands are:
\dF[
+
] [
PATTERN
]
List text search configurations (add+for more detail).
=
>
 \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
]
List text search dictionaries (add+for more detail).
=
>
 \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
]
List text search parsers (add+for more detail).
=
>
 \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
]
List text search templates (add+for more detail).
=
>
 \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
12.9. GIN及GiST索引型別
12.11. 功能限制
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