SHOW
SQL - Language Statements
SHOW
show the value of a run-time parameter
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
postmaster. See for details.
Parameters
name
The name of a run-time parameter. Available parameters are
documented in and on the 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
classification. At present, this parameter can be shown but
not set, because the setting is determined at
initdb time.
ALL
Show the values of all configurations parameters.
Diagnostics
ERROR: Option 'name' is not recognized
Message returned if name does not
stand for a known parameter.
Notes
The function current_setting produces
equivalent output. See .
Examples
Show the current setting of the parameter DateStyle:
SHOW DateStyle;
DateStyle
---------------------------------------
ISO with US (NonEuropean) conventions
(1 row)
Show the current setting of the parameter geqo:
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