## 12.10. psql Support

Information about text search configuration objects can be obtained in psql using a set of commands:

    \dF{d,p,t}[+] [PATTERN]

An optional `+` produces more details.

The optional parameter `PATTERN` can be the name of a text search object, optionally schema-qualified. If `PATTERN` is 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 | 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]`

  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