'\" t
.\"     Title: DROP EXTENSION
.\"    Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 2021
.\"    Manual: PostgreSQL 9.6.24 Documentation
.\"    Source: PostgreSQL 9.6.24
.\"  Language: English
.\"
.TH "DROP EXTENSION" "7" "2021" "PostgreSQL 9.6.24" "PostgreSQL 9.6.24 Documentation"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
DROP_EXTENSION \- remove an extension
.SH "SYNOPSIS"
.sp
.nf
DROP EXTENSION [ IF EXISTS ] \fIname\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ]
.fi
.SH "DESCRIPTION"
.PP
\fBDROP EXTENSION\fR
removes extensions from the database\&. Dropping an extension causes its component objects to be dropped as well\&.
.PP
You must own the extension to use
\fBDROP EXTENSION\fR\&.
.SH "PARAMETERS"
.PP
IF EXISTS
.RS 4
Do not throw an error if the extension does not exist\&. A notice is issued in this case\&.
.RE
.PP
\fIname\fR
.RS 4
The name of an installed extension\&.
.RE
.PP
CASCADE
.RS 4
Automatically drop objects that depend on the extension, and in turn all objects that depend on those objects (see
Section 5.13, \(lqDependency Tracking\(rq, in the documentation)\&.
.RE
.PP
RESTRICT
.RS 4
Refuse to drop the extension if any objects depend on it (other than its own member objects and other extensions listed in the same
\fBDROP\fR
command)\&. This is the default\&.
.RE
.SH "EXAMPLES"
.PP
To remove the extension
hstore
from the current database:
.sp
.if n \{\
.RS 4
.\}
.nf
DROP EXTENSION hstore;
.fi
.if n \{\
.RE
.\}
.sp
This command will fail if any of
hstore\*(Aqs objects are in use in the database, for example if any tables have columns of the
hstore
type\&. Add the
CASCADE
option to forcibly remove those dependent objects as well\&.
.SH "COMPATIBILITY"
.PP
\fBDROP EXTENSION\fR
is a
PostgreSQL
extension\&.
.SH "SEE ALSO"
CREATE EXTENSION (\fBCREATE_EXTENSION\fR(7)), ALTER EXTENSION (\fBALTER_EXTENSION\fR(7))