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'\" t
.\" Title: SHOW
.\" Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\" Date: 2024
.\" Manual: PostgreSQL 16.3 Documentation
.\" Source: PostgreSQL 16.3
.\" Language: English
.\"
.TH "SHOW" "7" "2024" "PostgreSQL 16.3" "PostgreSQL 16.3 Documentation"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
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.el .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
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.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
SHOW \- show the value of a run\-time parameter
.SH "SYNOPSIS"
.sp
.nf
SHOW \fIname\fR
SHOW ALL
.fi
.SH "DESCRIPTION"
.PP
\fBSHOW\fR
will display the current setting of run\-time parameters\&. These variables can be set using the
\fBSET\fR
statement, by editing the
postgresql\&.conf
configuration file, through the
\fBPGOPTIONS\fR
environmental variable (when using
libpq
or a
libpq\-based application), or through command\-line flags when starting the
\fBpostgres\fR
server\&. See
Chapter\ \&20
for details\&.
.SH "PARAMETERS"
.PP
\fIname\fR
.RS 4
The name of a run\-time parameter\&. Available parameters are documented in
Chapter\ \&20
and on the
\fBSET\fR(7)
reference page\&. In addition, there are a few parameters that can be shown but not set:
.PP
SERVER_VERSION
.RS 4
Shows the server\*(Aqs version number\&.
.RE
.PP
SERVER_ENCODING
.RS 4
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\&.
.RE
.PP
LC_COLLATE
.RS 4
Shows the database\*(Aqs 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\&.
.RE
.PP
LC_CTYPE
.RS 4
Shows the database\*(Aqs locale setting for character classification\&. At present, this parameter can be shown but not set, because the setting is determined at database creation time\&.
.RE
.PP
IS_SUPERUSER
.RS 4
True if the current role has superuser privileges\&.
.RE
.RE
.PP
ALL
.RS 4
Show the values of all configuration parameters, with descriptions\&.
.RE
.SH "NOTES"
.PP
The function
\fBcurrent_setting\fR
produces equivalent output; see
Section\ \&9.27.1\&. Also, the
pg_settings
system view produces the same information\&.
.SH "EXAMPLES"
.PP
Show the current setting of the parameter
\fIDateStyle\fR:
.sp
.if n \{\
.RS 4
.\}
.nf
SHOW DateStyle;
DateStyle
\-\-\-\-\-\-\-\-\-\-\-
ISO, MDY
(1 row)
.fi
.if n \{\
.RE
.\}
.PP
Show the current setting of the parameter
\fIgeqo\fR:
.sp
.if n \{\
.RS 4
.\}
.nf
SHOW geqo;
geqo
\-\-\-\-\-\-
on
(1 row)
.fi
.if n \{\
.RE
.\}
.PP
Show all settings:
.sp
.if n \{\
.RS 4
.\}
.nf
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)
.fi
.if n \{\
.RE
.\}
.SH "COMPATIBILITY"
.PP
The
\fBSHOW\fR
command is a
PostgreSQL
extension\&.
.SH "SEE ALSO"
\fBSET\fR(7), \fBRESET\fR(7)
|
