'\" t
.\"     Title: DROP SEQUENCE
.\"    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 SEQUENCE" "7" "2021" "PostgreSQL 9.6.24" "PostgreSQL 9.6.24 Documentation"
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.SH "NAME"
DROP_SEQUENCE \- remove a sequence
.SH "SYNOPSIS"
.sp
.nf
DROP SEQUENCE [ IF EXISTS ] \fIname\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ]
.fi
.SH "DESCRIPTION"
.PP
\fBDROP SEQUENCE\fR
removes sequence number generators\&. A sequence can only be dropped by its owner or a superuser\&.
.SH "PARAMETERS"
.PP
IF EXISTS
.RS 4
Do not throw an error if the sequence does not exist\&. A notice is issued in this case\&.
.RE
.PP
\fIname\fR
.RS 4
The name (optionally schema\-qualified) of a sequence\&.
.RE
.PP
CASCADE
.RS 4
Automatically drop objects that depend on the sequence, 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 sequence if any objects depend on it\&. This is the default\&.
.RE
.SH "EXAMPLES"
.PP
To remove the sequence
serial:
.sp
.if n \{\
.RS 4
.\}
.nf
DROP SEQUENCE serial;
.fi
.if n \{\
.RE
.\}
.SH "COMPATIBILITY"
.PP
\fBDROP SEQUENCE\fR
conforms to the
SQL
standard, except that the standard only allows one sequence to be dropped per command, and apart from the
IF EXISTS
option, which is a
PostgreSQL
extension\&.
.SH "SEE ALSO"
CREATE SEQUENCE (\fBCREATE_SEQUENCE\fR(7)), ALTER SEQUENCE (\fBALTER_SEQUENCE\fR(7))