SHOW(7) SQL Commands SHOW(7)NAME
SHOW - show the value of a run-time parameter
SYNOPSIS
SHOW name
SHOW ALL
INPUTS
name The name of a run-time parameter. See SET [set(7)] for a list.
ALL Show all current session parameters.
DESCRIPTION
SHOW will display the current setting of a run-time parameter. These variables can be set using the SET statement, by editing the post-
gresql.conf, through the PGOPTIONS environmental variable, or through a command-line flag when starting the postmaster.
Even with autocommit set to off, SHOW does not start a new transaction block. See the autocommit section of the Administrator's Guide for
details.
DIAGNOSTICS
ERROR: Option 'name'
Message returned if name does not stand for an existing parameter.
EXAMPLES
Show the current DateStyle setting:
SHOW DateStyle;
DateStyle
---------------------------------------
ISO with US (NonEuropean) conventions
(1 row)
Show the current genetic optimizer (geqo) setting:
SHOW GEQO;
geqo
------
on
(1 row)
Show all settings:
SHOW ALL;
name | setting
-------------------------------+---------------------------------------
australian_timezones | off
authentication_timeout | 60
checkpoint_segments | 3
.
.
.
wal_debug | 0
wal_sync_method | fdatasync
(94 rows)
COMPATIBILITY
The SHOW command is a PostgreSQL extension.
SEE ALSO
The function current_setting produces equivalent output. See Miscellaneous Functions in the PostgreSQL User's Guide.
SQL - Language Statements 2002-11-22 SHOW(7)
Check Out this Related Man Page
SHOW(7) PostgreSQL 9.2.7 Documentation 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)PostgreSQL 9.2.7 2014-02-17 SHOW(7)