Полезная информация

SHOW

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 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 or are determined at server start.

Diagnostics

ERROR: not a valid option name: name

Message returned if variable does not stand for an existing parameter.

ERROR: permission denied

You must be a superuser to be allowed to see certain settings.

WARNING: Time zone is unknown

If the TZ or PGTZ environment variable is not set.

Examples

Show the current DateStyle setting:

SHOW DateStyle;
INFO:  DateStyle is ISO with US (NonEuropean) conventions

Show the current genetic optimizer (geqo) setting:

SHOW GEQO;
INFO:  geqo is on

Compatibility

The SHOW command is a PostgreSQL extension.