DROP SUBSCRIPTION - remove a subscription
DROP SUBSCRIPTION [ IF EXISTS ]
name[ CASCADE | RESTRICT ]
removes a subscription from the
A subscription can only be dropped by a superuser.
cannot be executed inside a
transaction block if the subscription is associated with a replication
slot. (You can use
to unset the
The name of a subscription to be dropped.
These key words do not have any effect, since there are no dependencies on subscriptions.
When dropping a subscription that is associated with a replication slot on
the remote host (the normal state),
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,
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)
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
If a subscription is associated with a replication slot, then
cannot be executed inside a transaction block.
Drop a subscription:
DROP SUBSCRIPTION mysub;