SHOWSHOW7SQL - Language StatementsSHOWshow the value of a run-time parameter
SHOW name
SHOW ALL
DescriptionSHOW 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 for details.
Parametersname
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 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 .
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