'\" t
.\"     Title: DROP SUBSCRIPTION
.\"    Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 2026
.\"    Manual: PostgreSQL 18.6 Documentation
.\"    Source: PostgreSQL 18.6
.\"  Language: English
.\"
.TH "DROP SUBSCRIPTION" "7" "2026" "PostgreSQL 18.6" "PostgreSQL 18.6 Documentation"
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.SH "NAME"
DROP_SUBSCRIPTION \- remove a subscription
.SH "SYNOPSIS"
.sp
.nf
DROP SUBSCRIPTION [ IF EXISTS ] \fIname\fR [ CASCADE | RESTRICT ]
.fi
.SH "DESCRIPTION"
.PP
\fBDROP SUBSCRIPTION\fR
removes a subscription from the database cluster\&.
.PP
To execute this command the user must be the owner of the subscription\&.
.PP
\fBDROP SUBSCRIPTION\fR
cannot be executed inside a transaction block if the subscription is associated with a replication slot\&. (You can use
\fBALTER SUBSCRIPTION\fR
to unset the slot\&.)
.SH "PARAMETERS"
.PP
IF EXISTS
.RS 4
Do not throw an error if the subscription does not exist\&. A notice is issued in this case\&.
.RE
.PP
\fIname\fR
.RS 4
The name of a subscription to be dropped\&.
.RE
.PP
CASCADE
.br
RESTRICT
.RS 4
These key words do not have any effect, since there are no dependencies on subscriptions\&.
.RE
.SH "NOTES"
.PP
When dropping a subscription that is associated with a replication slot on the remote host (the normal state),
\fBDROP SUBSCRIPTION\fR
will connect to the remote host and try to drop the replication slot (and any remaining table synchronization slots) as part of its operation\&. This is necessary so that the resources allocated for the subscription on the remote host are released\&. If this fails, either because the remote host is not reachable or because the remote replication slot cannot be dropped or does not exist or never existed, the
\fBDROP SUBSCRIPTION\fR
command will fail\&. To proceed in this situation, first disable the subscription by executing
ALTER SUBSCRIPTION \&.\&.\&. DISABLE, and then disassociate it from the replication slot by executing
ALTER SUBSCRIPTION \&.\&.\&. SET (slot_name = NONE)\&. After that,
\fBDROP SUBSCRIPTION\fR
will not attempt to drop the subscription\*(Aqs own replication slot\&. It may still connect to the publisher to drop internally\-created table synchronization slots if some table synchronization is left unfinished; if the publisher is unreachable, those slots (and the main slot, if it still exists) must be dropped manually\&. Otherwise it/they will continue to reserve WAL and might eventually cause the disk to fill up\&. See also
Section\ \&29.2.1\&.
.PP
If a subscription is associated with a replication slot, then
\fBDROP SUBSCRIPTION\fR
cannot be executed inside a transaction block\&.
.SH "EXAMPLES"
.PP
Drop a subscription:
.sp
.if n \{\
.RS 4
.\}
.nf
DROP SUBSCRIPTION mysub;
.fi
.if n \{\
.RE
.\}
.SH "COMPATIBILITY"
.PP
\fBDROP SUBSCRIPTION\fR
is a
PostgreSQL
extension\&.
.SH "SEE ALSO"
CREATE SUBSCRIPTION (\fBCREATE_SUBSCRIPTION\fR(7)), ALTER SUBSCRIPTION (\fBALTER_SUBSCRIPTION\fR(7))