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, by editing the postgresql.conf, through the PGOPTIONS environmental variable, or through a command-line flag when starting the postmaster.

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.