/usr/man2/cat.l/show.l.Z(/usr/man2/cat.l/show.l.Z)

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  post-
       gresql.conf  configuration  file,  through  the PGOPTIONS environmental
       variable (when using libpq or a libpq-based  application),  or  through
       command-line  flags when starting the postmaster. See the documentation
       for details.

PARAMETERS

       name   The name of a run-time parameter. Available parameters are docu-
              mented  in  the  documentation and on the SET [set(l)] 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 initdb
                     time.

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

              IS_SUPERUSER
                     True if the current session authorization identifier  has
                     superuser privileges.

       ALL    Show  the  values of all configuration parameters, with descrip-
              tions.

NOTES

       The function current_setting produces equivalent output. See the  docu-
       mentation.

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
       --------------------------------+--------------------------------+----------------------------------------------------------------------------------------------
        add_missing_from               | off                            | Automatically adds missing table references to FROM clauses.
        archive_command                | unset                          | WAL archiving command.
        australian_timezones           | off                            | Interprets ACST, CST, EST, and SAT as Australian time zones.
           .
           .
           .
        work_mem                       | 1024                           | Sets the maximum memory to be used for query workspaces.
        zero_damaged_pages             | off                            | Continues processing past damaged page headers.
       (146 rows)

COMPATIBILITY

       The SHOW command is a PostgreSQL extension.

SEE ALSO

       SET [set(l)], RESET [reset(l)]

SQL - Language Statements         2005-11-05                            SHOW()