bionic (7) DROP_SUBSCRIPTION.7.gz

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 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, disassociate the subscription 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 should then be
       dropped manually; otherwise it 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))