NAME

       DROP_SUBSCRIPTION - remove a subscription

SYNOPSIS

       DROP SUBSCRIPTION [ IF EXISTS ] name [ CASCADE | RESTRICT ]

DESCRIPTION

       DROP SUBSCRIPTION removes a subscription from the database cluster.

       A subscription can only be dropped by a superuser.

       DROP SUBSCRIPTION cannot be executed inside a transaction block if the subscription is
       associated with a replication slot. (You can use ALTER SUBSCRIPTION to unset the slot.)

PARAMETERS

       name
           The name of a subscription to be dropped.

       CASCADE
       RESTRICT
           These key words do not have any effect, since there are no dependencies on
           subscriptions.

NOTES

       When dropping a subscription that is associated with a replication slot on the remote host
       (the normal state), DROP SUBSCRIPTION 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 DROP
       SUBSCRIPTION 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, DROP SUBSCRIPTION will no longer attempt any actions on a remote host. Note that if
       the remote replication slot still exists, it (and any related table synchronization slots)
       should then be dropped manually; otherwise it/they will continue to reserve WAL and might
       eventually cause the disk to fill up. See also Section 31.2.1.

       If a subscription is associated with a replication slot, then DROP SUBSCRIPTION cannot be
       executed inside a transaction block.

EXAMPLES

       Drop a subscription:

           DROP SUBSCRIPTION mysub;

COMPATIBILITY

       DROP SUBSCRIPTION is a PostgreSQL extension.

SEE ALSO

       CREATE SUBSCRIPTION (CREATE_SUBSCRIPTION(7)), ALTER SUBSCRIPTION (ALTER_SUBSCRIPTION(7))