SHOW(7)

NAME

   SHOW - show the value of a run-time parameter

SYNOPSIS

   SHOW name
   SHOW ALL

DESCRIPTION

   SHOW will display the current setting of run-time parameters. These
   variables can be set using the SET statement, by editing the
   postgresql.conf configuration file, through the PGOPTIONS environmental
   variable (when using libpq or a libpq-based application), or through
   command-line flags when starting the postgres server. See Chapter 18,
   Server Configuration, in the documentation for details.

PARAMETERS

   name
       The name of a run-time parameter. Available parameters are
       documented in Chapter 18, Server Configuration, in the
       documentation and on the SET(7) reference page. In addition, there
       are a few parameters that can be shown but not set:

       SERVER_VERSION
           Shows the server's version number.

       SERVER_ENCODING
           Shows the server-side character set encoding. At present, this
           parameter can be shown but not set, because the encoding is
           determined at database creation time.

       LC_COLLATE
           Shows the database's locale setting for collation (text
           ordering). At present, this parameter can be shown but not set,
           because the setting is determined at database creation time.

       LC_CTYPE
           Shows the database's locale setting for character
           classification. At present, this parameter can be shown but not
           set, because the setting is determined at database creation
           time.

       IS_SUPERUSER
           True if the current role has superuser privileges.

   ALL
       Show the values of all configuration parameters, with descriptions.

NOTES

   The function current_setting produces equivalent output; see Section
   9.26, "System Administration Functions", in the documentation. Also,
   the pg_settings system view produces the same information.

EXAMPLES

   Show the current setting of the parameter DateStyle:

       SHOW DateStyle;
        DateStyle
       -----------
        ISO, MDY
       (1 row)

   Show the current setting of the parameter geqo:

       SHOW geqo;
        geqo
       ------
        on
       (1 row)

   Show all settings:

       SHOW ALL;
                   name         | setting |                description
       -------------------------+---------+-------------------------------------------------
        allow_system_table_mods | off     | Allows modifications of the structure of ...
           .
           .
           .
        xmloption               | content | Sets whether XML data in implicit parsing ...
        zero_damaged_pages      | off     | Continues processing past damaged page headers.
       (196 rows)

COMPATIBILITY

   The SHOW command is a PostgreSQL extension.

SEE ALSO

   SET(7), RESET(7)

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