Section 7 · Overviews and conventions
SHOW.7
Package: postgresql
SHOW
NAME
SYNOPSIS
DESCRIPTION
PARAMETERS
NOTES
EXAMPLES
COMPATIBILITY
SEE ALSO
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 20 for details.
PARAMETERS
name
The name of a run−time parameter. Available parameters are documented in Chapter 20 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.
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 9.27.1. 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)