The name of a run-time parameter. See
SET
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
postgresql.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'
is not recognized
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.
