# SHOW

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 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 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
## Compatibility

 The `SHOW` command is a PostgreSQL extension.

## See Also

[SET](sql-set.html), [RESET](sql-reset.html)